~~ Licensed under the Apache License, Version 2.0 (the "License"); ~~ you may not use this file except in compliance with the License. ~~ You may obtain a copy of the License at ~~ ~~ http://www.apache.org/licenses/LICENSE-2.0 ~~ ~~ Unless required by applicable law or agreed to in writing, software ~~ distributed under the License is distributed on an "AS IS" BASIS, ~~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. ~~ See the License for the specific language governing permissions and ~~ limitations under the License. See accompanying LICENSE file. --- History Server REST API's. --- --- ${maven.build.timestamp} History Server REST API's. \[ {{{./index.html}Go Back}} \] %{toc|section=1|fromDepth=0|toDepth=3} * Overview The history server REST API's allow the user to get status on finished applications. Currently it only supports MapReduce and provides information on finished jobs. * History Server Information API The history server information resource provides overall information about the history server. ** URI Both of the following URI's give you the history server information, from an application id identified by the appid value. ------ * http:///ws/v1/history * http:///ws/v1/history/info ------ ** HTTP Operations Supported ------ * GET ------ ** Query Parameters Supported ------ None ------ ** Elements of the object *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | startedOn | long | The time the history server was started (in ms since epoch)| *---------------+--------------+-------------------------------+ | hadoopVersion | string | Version of hadoop common | *---------------+--------------+-------------------------------+ | hadoopBuildVersion | string | Hadoop common build string with build version, user, and checksum | *---------------+--------------+-------------------------------+ | hadoopVersionBuiltOn | string | Timestamp when hadoop common was built | *---------------+--------------+-------------------------------+ ** Response Examples <> HTTP Request: ------ GET http:///ws/v1/history/info ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26) +---+ Response Body: +---+ { "historyInfo" : { "startedOn":1353512830963, "hadoopVersionBuiltOn" : "Wed Jan 11 21:18:36 UTC 2012", "hadoopBuildVersion" : "0.23.1-SNAPSHOT from 1230253 by user1 source checksum bb6e554c6d50b0397d826081017437a7", "hadoopVersion" : "0.23.1-SNAPSHOT" } } +---+ <> HTTP Request: ----- GET http:///ws/v1/history/info Accept: application/xml ----- Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 330 Server: Jetty(6.1.26) +---+ Response Body: +---+ 1353512830963 0.23.1-SNAPSHOT 0.23.1-SNAPSHOT from 1230253 by user1 source checksum bb6e554c6d50b0397d826081017437a7 Wed Jan 11 21:18:36 UTC 2012 +---+ * MapReduce API's The following list of resources apply to MapReduce. ** Jobs API The jobs resource provides a list of the MapReduce jobs that have finished. It does not currently return a full list of parameters *** URI ------ * http:///ws/v1/history/mapreduce/jobs ------ *** HTTP Operations Supported ------ * GET ------ *** Query Parameters Supported Multiple paramters can be specified. The started and finished times have a begin and end parameter to allow you to specify ranges. For example, one could request all jobs that started between 1:00am and 2:00pm on 12/19/2011 with startedTimeBegin=1324256400&startedTimeEnd=1324303200. If the Begin parameter is not specfied, it defaults to 0, and if the End parameter is not specified, it defaults to infinity. ------ * user - user name * state - the job state * queue - queue name * limit - total number of app objects to be returned * startedTimeBegin - jobs with start time beginning with this time, specified in ms since epoch * startedTimeEnd - jobs with start time ending with this time, specified in ms since epoch * finishedTimeBegin - jobs with finish time beginning with this time, specified in ms since epoch * finishedTimeEnd - jobs with finish time ending with this time, specified in ms since epoch ------ *** Elements of the object When you make a request for the list of jobs, the information will be returned as an array of job objects. See also {{Job API}} for syntax of the job object. Except this is a subset of a full job. Only startTime, finishTime, id, name, queue, user, state, mapsTotal, mapsCompleted, reducesTotal, and reducesCompleted are returned. *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | job | array of job objects(json)/zero or more job objects(XML) | The collection of job objects | *---------------+--------------+-------------------------------+ *** Response Examples <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26) +---+ Response Body: +---+ { "jobs" : { "job" : [ { "state" : "SUCCEEDED", "user" : "user1", "reducesTotal" : 1, "mapsCompleted" : 1, "startTime" : 1326381344489, "id" : "job_1326381300833_1_1", "name" : "word count", "reducesCompleted" : 1, "mapsTotal" : 1, "queue" : "default", "finishTime" : 1326381356010 }, { "state" : "SUCCEEDED", "user" : "user1", "reducesTotal" : 1, "mapsCompleted" : 1, "startTime" : 1326381446529, "id" : "job_1326381300833_2_2", "name" : "Sleep job", "reducesCompleted" : 1, "mapsTotal" : 1, "queue" : "default", "finishTime" : 1326381582106 } ] } } +---+ <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs Accept: application/xml ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 1922 Server: Jetty(6.1.26) +---+ Response Body: +---+ 1326381344489 1326381356010 job_1326381300833_1_1 word count default user1 SUCCEEDED 1 1 1 1 1326381446529 1326381582106 job_1326381300833_2_2 Sleep job default user1 SUCCEEDED 1 1 1 1 +---+ ** {Job API} A Job resource contains information about a particular job identified by {jobid}. *** URI ------ * http:///ws/v1/history/mapreduce/jobs/{jobid} ------ *** HTTP Operations Supported ------ * GET ------ *** Query Parameters Supported ------ None ------ *** Elements of the object *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | id | string | The job id| *---------------+--------------+-------------------------------+ | name | string | The job name | *---------------+--------------+-------------------------------+ | queue | string | The queue the job was submitted to| *---------------+--------------+-------------------------------+ | user | string | The user name | *---------------+--------------+-------------------------------+ | state | string | the job state - valid values are: NEW, INITED, RUNNING, SUCCEEDED, FAILED, KILL_WAIT, KILLED, ERROR| *---------------+--------------+-------------------------------+ | diagnostics | string | A diagnostic message | *---------------+--------------+-------------------------------+ | startTime | long | The time the job started (in ms since epoch)| *---------------+--------------+-------------------------------+ | finishTime | long | The time the job finished (in ms since epoch)| *---------------+--------------+-------------------------------+ | mapsTotal | int | The total number of maps | *---------------+--------------+-------------------------------+ | mapsCompleted | int | The number of completed maps | *---------------+--------------+-------------------------------+ | reducesTotal | int | The total number of reduces | *---------------+--------------+-------------------------------+ | reducesCompleted | int | The number of completed reduces| *---------------+--------------+-------------------------------+ | uberized | boolean | Indicates if the job was an uber job - ran completely in the application master| *---------------+--------------+-------------------------------+ | avgMapTime | long | The average time of a map task (in ms)| *---------------+--------------+-------------------------------+ | avgReduceTime | long | The average time of the reduce (in ms)| *---------------+--------------+-------------------------------+ | avgShuffleTime | long | The average time of the shuffle (in ms)| *---------------+--------------+-------------------------------+ | avgMergeTime | long | The average time of the merge (in ms)| *---------------+--------------+-------------------------------+ | failedReduceAttempts | int | The number of failed reduce attempts | *---------------+--------------+-------------------------------+ | killedReduceAttempts | int | The number of killed reduce attempts | *---------------+--------------+-------------------------------+ | successfulReduceAttempts | int | The number of successful reduce attempts | *---------------+--------------+-------------------------------+ | failedMapAttempts | int | The number of failed map attempts | *---------------+--------------+-------------------------------+ | killedMapAttempts | int | The number of killed map attempts | *---------------+--------------+-------------------------------+ | successfulMapAttempts | int | The number of successful map attempts | *---------------+--------------+-------------------------------+ | acls | array of acls(json)/zero or more acls objects(xml)| A collection of acls objects | *---------------+--------------+-------------------------------+ ** Elements of the object *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | value | string | The acl value| *---------------+--------------+-------------------------------+ | name | string | The acl name | *---------------+--------------+-------------------------------+ *** Response Examples <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2 ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/json Server: Jetty(6.1.26) Content-Length: 720 +---+ Response Body: +---+ { "job" : { "avgReduceTime" : 124961, "failedReduceAttempts" : 0, "state" : "SUCCEEDED", "successfulReduceAttempts" : 1, "acls" : [ { "value" : " ", "name" : "mapreduce.job.acl-modify-job" }, { "value" : " ", "name" : "mapreduce.job.acl-view-job" } ], "user" : "user1", "reducesTotal" : 1, "mapsCompleted" : 1, "startTime" : 1326381446529, "id" : "job_1326381300833_2_2", "avgMapTime" : 2638, "successfulMapAttempts" : 1, "name" : "Sleep job", "avgShuffleTime" : 2540, "reducesCompleted" : 1, "diagnostics" : "", "failedMapAttempts" : 0, "avgMergeTime" : 2589, "killedReduceAttempts" : 0, "mapsTotal" : 1, "queue" : "default", "uberized" : false, "killedMapAttempts" : 0, "finishTime" : 1326381582106 } } +---+ <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2 Accept: application/xml ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 983 Server: Jetty(6.1.26) +---+ Response Body: +---+ 1326381446529 1326381582106 job_1326381300833_2_2 Sleep job default user1 SUCCEEDED 1 1 1 1 false 2638 124961 2540 2589 0 0 1 0 0 1 mapreduce.job.acl-modify-job mapreduce.job.acl-view-job +---+ ** Job Attempts API With the job attempts API, you can obtain a collection of resources that represent a job attempt. When you run a GET operation on this resource, you obtain a collection of Job Attempt Objects. *** URI ------ * http:///ws/v1/history/mapreduce/jobs/{jobid}/jobattempts ------ *** HTTP Operations Supported ------ * GET ------ *** Query Parameters Supported ------ None ------ *** Elements of the object When you make a request for the list of job attempts, the information will be returned as an array of job attempt objects. jobAttempts: *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | jobAttempt | array of job attempt objects(JSON)/zero or more job attempt objects(XML) | The collection of job attempt objects | *---------------+--------------+--------------------------------+ *** Elements of the object *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | id | string | The job attempt id | *---------------+--------------+--------------------------------+ | nodeId | string | The node id of the node the attempt ran on| *---------------+--------------+--------------------------------+ | nodeHttpAddress | string | The node http address of the node the attempt ran on| *---------------+--------------+--------------------------------+ | logsLink | string | The http link to the job attempt logs | *---------------+--------------+--------------------------------+ | containerId | string | The id of the container for the job attempt | *---------------+--------------+--------------------------------+ | startTime | long | The start time of the attempt (in ms since epoch)| *---------------+--------------+--------------------------------+ *** Response Examples <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/jobattempts ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26) +---+ Response Body: +---+ { "jobAttempts" : { "jobAttempt" : [ { "nodeId" : "host.domain.com:8041", "nodeHttpAddress" : "host.domain.com:8042", "startTime" : 1326381444693, "id" : 1, "logsLink" : "http://host.domain.com:19888/jobhistory/logs/host.domain.com:8041/container_1326381300833_0002_01_000001/job_1326381300833_2_2/user1", "containerId" : "container_1326381300833_0002_01_000001" } ] } } +---+ <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/jobattmpts Accept: application/xml ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 575 Server: Jetty(6.1.26) +---+ Response Body: +---+ host.domain.com:8042 host.domain.com:8041 1 1326381444693 container_1326381300833_0002_01_000001 http://host.domain.com:19888/jobhistory/logs/host.domain.com:8041/container_1326381300833_0002_01_000001/job_1326381300833_2_2/user1 +---+ ** Job Counters API With the job counters API, you can object a collection of resources that represent al the counters for that job. *** URI ------ * http:///ws/v1/history/mapreduce/jobs/{jobid}/counters ------ *** HTTP Operations Supported ------ * GET ------ *** Query Parameters Supported ------ None ------ *** Elements of the object *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | id | string | The job id | *---------------+--------------+-------------------------------+ | counterGroup | array of counterGroup objects(JSON)/zero or more counterGroup objects(XML) | A collection of counter group objects | *---------------+--------------+-------------------------------+ *** Elements of the objecs *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | counterGroupName | string | The name of the counter group | *---------------+--------------+-------------------------------+ | counter | array of counter objects(JSON)/zero or more counter objects(XML) | A collection of counter objects | *---------------+--------------+-------------------------------+ *** Elements of the object *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | name | string | The name of the counter | *---------------+--------------+-------------------------------+ | reduceCounterValue | long | The counter value of reduce tasks | *---------------+--------------+-------------------------------+ | mapCounterValue | long | The counter value of map tasks | *---------------+--------------+-------------------------------+ | totalCounterValue | long | The counter value of all tasks | *---------------+--------------+-------------------------------+ *** Response Examples <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/counters ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26) +---+ Response Body: +---+ { "jobCounters" : { "id" : "job_1326381300833_2_2", "counterGroup" : [ { "counterGroupName" : "Shuffle Errors", "counter" : [ { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "BAD_ID" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "CONNECTION" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "IO_ERROR" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "WRONG_LENGTH" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "WRONG_MAP" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "WRONG_REDUCE" } ] }, { "counterGroupName" : "org.apache.hadoop.mapreduce.FileSystemCounter", "counter" : [ { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 2483, "name" : "FILE_BYTES_READ" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 108525, "name" : "FILE_BYTES_WRITTEN" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "FILE_READ_OPS" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "FILE_LARGE_READ_OPS" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "FILE_WRITE_OPS" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 48, "name" : "HDFS_BYTES_READ" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "HDFS_BYTES_WRITTEN" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 1, "name" : "HDFS_READ_OPS" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "HDFS_LARGE_READ_OPS" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "HDFS_WRITE_OPS" } ] }, { "counterGroupName" : "org.apache.hadoop.mapreduce.TaskCounter", "counter" : [ { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 1, "name" : "MAP_INPUT_RECORDS" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 1200, "name" : "MAP_OUTPUT_RECORDS" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 4800, "name" : "MAP_OUTPUT_BYTES" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 2235, "name" : "MAP_OUTPUT_MATERIALIZED_BYTES" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 48, "name" : "SPLIT_RAW_BYTES" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "COMBINE_INPUT_RECORDS" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "COMBINE_OUTPUT_RECORDS" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 1200, "name" : "REDUCE_INPUT_GROUPS" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 2235, "name" : "REDUCE_SHUFFLE_BYTES" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 1200, "name" : "REDUCE_INPUT_RECORDS" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "REDUCE_OUTPUT_RECORDS" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 2400, "name" : "SPILLED_RECORDS" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 1, "name" : "SHUFFLED_MAPS" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "FAILED_SHUFFLE" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 1, "name" : "MERGED_MAP_OUTPUTS" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 113, "name" : "GC_TIME_MILLIS" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 1830, "name" : "CPU_MILLISECONDS" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 478068736, "name" : "PHYSICAL_MEMORY_BYTES" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 2159284224, "name" : "VIRTUAL_MEMORY_BYTES" }, { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 378863616, "name" : "COMMITTED_HEAP_BYTES" } ] }, { "counterGroupName" : "org.apache.hadoop.mapreduce.lib.input.FileInputFormatCounter", "counter" : [ { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "BYTES_READ" } ] }, { "counterGroupName" : "org.apache.hadoop.mapreduce.lib.output.FileOutputFormatCounter", "counter" : [ { "reduceCounterValue" : 0, "mapCounterValue" : 0, "totalCounterValue" : 0, "name" : "BYTES_WRITTEN" } ] } ] } } +---+ <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/counters Accept: application/xml ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 7030 Server: Jetty(6.1.26) +---+ Response Body: +---+ job_1326381300833_2_2 Shuffle Errors BAD_ID 0 0 0 CONNECTION 0 0 0 IO_ERROR 0 0 0 WRONG_LENGTH 0 0 0 WRONG_MAP 0 0 0 WRONG_REDUCE 0 0 0 org.apache.hadoop.mapreduce.FileSystemCounter FILE_BYTES_READ 2483 0 0 FILE_BYTES_WRITTEN 108525 0 0 FILE_READ_OPS 0 0 0 FILE_LARGE_READ_OPS 0 0 0 FILE_WRITE_OPS 0 0 0 HDFS_BYTES_READ 48 0 0 HDFS_BYTES_WRITTEN 0 0 0 HDFS_READ_OPS 1 0 0 HDFS_LARGE_READ_OPS 0 0 0 HDFS_WRITE_OPS 0 0 0 org.apache.hadoop.mapreduce.TaskCounter MAP_INPUT_RECORDS 1 0 0 MAP_OUTPUT_RECORDS 1200 0 0 MAP_OUTPUT_BYTES 4800 0 0 MAP_OUTPUT_MATERIALIZED_BYTES 2235 0 0 SPLIT_RAW_BYTES 48 0 0 COMBINE_INPUT_RECORDS 0 0 0 COMBINE_OUTPUT_RECORDS 0 0 0 REDUCE_INPUT_GROUPS 1200 0 0 REDUCE_SHUFFLE_BYTES 2235 0 0 REDUCE_INPUT_RECORDS 1200 0 0 REDUCE_OUTPUT_RECORDS 0 0 0 SPILLED_RECORDS 2400 0 0 SHUFFLED_MAPS 1 0 0 FAILED_SHUFFLE 0 0 0 MERGED_MAP_OUTPUTS 1 0 0 GC_TIME_MILLIS 113 0 0 CPU_MILLISECONDS 1830 0 0 PHYSICAL_MEMORY_BYTES 478068736 0 0 VIRTUAL_MEMORY_BYTES 2159284224 0 0 COMMITTED_HEAP_BYTES 378863616 0 0 org.apache.hadoop.mapreduce.lib.input.FileInputFormatCounter BYTES_READ 0 0 0 org.apache.hadoop.mapreduce.lib.output.FileOutputFormatCounter BYTES_WRITTEN 0 0 0 +---+ ** Job Conf API A job configuration resource contains information about the job configuration for this job. *** URI Use the following URI to obtain th job configuration information, from a job identified by the {jobid} value. ------ * http:///ws/v1/history/mapreduce/jobs/{jobid}/conf ------ *** HTTP Operations Supported ------ * GET ------ *** Query Parameters Supported ------ None ------ *** Elements of the object *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | path | string | The path to the job configuration file| *---------------+--------------+-------------------------------+ | property | array of the configuration properties(JSON)/zero or more configuration properties(XML) | Collection of configuration property objects| *---------------+--------------+-------------------------------+ *** Elements of the object *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | name | string | The name of the configuration property | *---------------+--------------+-------------------------------+ | value | string | The value of the configuration property | *---------------+--------------+-------------------------------+ | source | string | The location this configuration object came from. If there is more then one of these it shows the history with the latest source at the end of the list. | *---------------+--------------+-------------------------------+ *** Response Examples <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/conf ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26) +---+ Response Body: This is a small snippet of the output as the output if very large. The real output contains every property in your job configuration file. +---+ { "conf" : { "path" : "hdfs://host.domain.com:9000/user/user1/.staging/job_1326381300833_0002/job.xml", "property" : [ { "value" : "/home/hadoop/hdfs/data", "name" : "dfs.datanode.data.dir" "source" : ["hdfs-site.xml", "job.xml"] }, { "value" : "org.apache.hadoop.yarn.server.webproxy.amfilter.AmFilterInitializer", "name" : "hadoop.http.filter.initializers" "source" : ["programatically", "job.xml"] }, { "value" : "/home/hadoop/tmp", "name" : "mapreduce.cluster.temp.dir" "source" : ["mapred-site.xml"] }, ... ] } } +---+ <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/conf Accept: application/xml ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 552 Server: Jetty(6.1.26) +---+ Response Body: +---+ hdfs://host.domain.com:9000/user/user1/.staging/job_1326381300833_0002/job.xml dfs.datanode.data.dir /home/hadoop/hdfs/data hdfs-site.xml job.xml hadoop.http.filter.initializers org.apache.hadoop.yarn.server.webproxy.amfilter.AmFilterInitializer programatically job.xml mapreduce.cluster.temp.dir /home/hadoop/tmp mapred-site.xml ... +---+ ** Tasks API With the tasks API, you can obtain a collection of resources that represent a task within a job. When you run a GET operation on this resource, you obtain a collection of Task Objects. *** URI ------ * http:///ws/v1/history/mapreduce/jobs/{jobid}/tasks ------ *** HTTP Operations Supported ------ * GET ------ *** Query Parameters Supported ------ * type - type of task, valid values are m or r. m for map task or r for reduce task. ------ *** Elements of the object When you make a request for the list of tasks , the information will be returned as an array of task objects. See also {{Task API}} for syntax of the task object. *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | task | array of task objects(JSON)/zero or more task objects(XML) | The collection of task objects. | *---------------+--------------+--------------------------------+ *** Response Examples <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/tasks ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26) +---+ Response Body: +---+ { "tasks" : { "task" : [ { "progress" : 100, "elapsedTime" : 6777, "state" : "SUCCEEDED", "startTime" : 1326381446541, "id" : "task_1326381300833_2_2_m_0", "type" : "MAP", "successfulAttempt" : "attempt_1326381300833_2_2_m_0_0", "finishTime" : 1326381453318 }, { "progress" : 100, "elapsedTime" : 135559, "state" : "SUCCEEDED", "startTime" : 1326381446544, "id" : "task_1326381300833_2_2_r_0", "type" : "REDUCE", "successfulAttempt" : "attempt_1326381300833_2_2_r_0_0", "finishTime" : 1326381582103 } ] } } +---+ <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/tasks Accept: application/xml ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 653 Server: Jetty(6.1.26) +---+ Response Body: +---+ 1326381446541 1326381453318 6777 100.0 task_1326381300833_2_2_m_0 SUCCEEDED MAP attempt_1326381300833_2_2_m_0_0 1326381446544 1326381582103 135559 100.0 task_1326381300833_2_2_r_0 SUCCEEDED REDUCE attempt_1326381300833_2_2_r_0_0 +---+ ** {Task API} A Task resource contains information about a particular task within a job. *** URI Use the following URI to obtain an Task Object, from a task identified by the {taskid} value. ------ * http:///ws/v1/history/mapreduce/jobs/{jobid}/tasks/{taskid} ------ *** HTTP Operations Supported ------ * GET ------ *** Query Parameters Supported ------ None ------ *** Elements of the object *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | id | string | The task id | *---------------+--------------+--------------------------------+ | state | string | The state of the task - valid values are: NEW, SCHEDULED, RUNNING, SUCCEEDED, FAILED, KILL_WAIT, KILLED *---------------+--------------+--------------------------------+ | type | string | The task type - MAP or REDUCE| *---------------+--------------+--------------------------------+ | successfulAttempt | string | The id of the last successful attempt | *---------------+--------------+--------------------------------+ | progress | float | The progress of the task as a percent| *---------------+--------------+--------------------------------+ | startTime | long | The time in which the task started (in ms since epoch) or -1 if it was never started | *---------------+--------------+--------------------------------+ | finishTime | long | The time in which the task finished (in ms since epoch)| *---------------+--------------+--------------------------------+ | elapsedTime | long | The elapsed time since the application started (in ms)| *---------------+--------------+--------------------------------+ *** Response Examples <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/tasks/task_1326381300833_2_2_m_0 ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26) +---+ Response Body: +---+ { "task" : { "progress" : 100, "elapsedTime" : 6777, "state" : "SUCCEEDED", "startTime" : 1326381446541, "id" : "task_1326381300833_2_2_m_0", "type" : "MAP", "successfulAttempt" : "attempt_1326381300833_2_2_m_0_0", "finishTime" : 1326381453318 } } +---+ <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/tasks/task_1326381300833_2_2_m_0 Accept: application/xml ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 299 Server: Jetty(6.1.26) +---+ Response Body: +---+ 1326381446541 1326381453318 6777 100.0 task_1326381300833_2_2_m_0 SUCCEEDED MAP attempt_1326381300833_2_2_m_0_0 +---+ ** Task Counters API With the task counters API, you can object a collection of resources that represent all the counters for that task. *** URI ------ * http:///ws/v1/history/mapreduce/jobs/{jobid}/tasks/{taskid}/counters ------ *** HTTP Operations Supported ------ * GET ------ *** Query Parameters Supported ------ None ------ *** Elements of the object *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | id | string | The task id | *---------------+--------------+-------------------------------+ | taskcounterGroup | array of counterGroup objects(JSON)/zero or more counterGroup objects(XML) | A collection of counter group objects | *---------------+--------------+-------------------------------+ *** Elements of the object *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | counterGroupName | string | The name of the counter group | *---------------+--------------+-------------------------------+ | counter | array of counter objects(JSON)/zero or more counter objects(XML) | A collection of counter objects | *---------------+--------------+-------------------------------+ *** Elements of the object *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | name | string | The name of the counter | *---------------+--------------+-------------------------------+ | value | long | The value of the counter | *---------------+--------------+-------------------------------+ *** Response Examples <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/tasks/task_1326381300833_2_2_m_0/counters ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26) +---+ Response Body: +---+ { "jobTaskCounters" : { "id" : "task_1326381300833_2_2_m_0", "taskCounterGroup" : [ { "counterGroupName" : "org.apache.hadoop.mapreduce.FileSystemCounter", "counter" : [ { "value" : 2363, "name" : "FILE_BYTES_READ" }, { "value" : 54372, "name" : "FILE_BYTES_WRITTEN" }, { "value" : 0, "name" : "FILE_READ_OPS" }, { "value" : 0, "name" : "FILE_LARGE_READ_OPS" }, { "value" : 0, "name" : "FILE_WRITE_OPS" }, { "value" : 0, "name" : "HDFS_BYTES_READ" }, { "value" : 0, "name" : "HDFS_BYTES_WRITTEN" }, { "value" : 0, "name" : "HDFS_READ_OPS" }, { "value" : 0, "name" : "HDFS_LARGE_READ_OPS" }, { "value" : 0, "name" : "HDFS_WRITE_OPS" } ] }, { "counterGroupName" : "org.apache.hadoop.mapreduce.TaskCounter", "counter" : [ { "value" : 0, "name" : "COMBINE_INPUT_RECORDS" }, { "value" : 0, "name" : "COMBINE_OUTPUT_RECORDS" }, { "value" : 460, "name" : "REDUCE_INPUT_GROUPS" }, { "value" : 2235, "name" : "REDUCE_SHUFFLE_BYTES" }, { "value" : 460, "name" : "REDUCE_INPUT_RECORDS" }, { "value" : 0, "name" : "REDUCE_OUTPUT_RECORDS" }, { "value" : 0, "name" : "SPILLED_RECORDS" }, { "value" : 1, "name" : "SHUFFLED_MAPS" }, { "value" : 0, "name" : "FAILED_SHUFFLE" }, { "value" : 1, "name" : "MERGED_MAP_OUTPUTS" }, { "value" : 26, "name" : "GC_TIME_MILLIS" }, { "value" : 860, "name" : "CPU_MILLISECONDS" }, { "value" : 107839488, "name" : "PHYSICAL_MEMORY_BYTES" }, { "value" : 1123147776, "name" : "VIRTUAL_MEMORY_BYTES" }, { "value" : 57475072, "name" : "COMMITTED_HEAP_BYTES" } ] }, { "counterGroupName" : "Shuffle Errors", "counter" : [ { "value" : 0, "name" : "BAD_ID" }, { "value" : 0, "name" : "CONNECTION" }, { "value" : 0, "name" : "IO_ERROR" }, { "value" : 0, "name" : "WRONG_LENGTH" }, { "value" : 0, "name" : "WRONG_MAP" }, { "value" : 0, "name" : "WRONG_REDUCE" } ] }, { "counterGroupName" : "org.apache.hadoop.mapreduce.lib.output.FileOutputFormatCounter", "counter" : [ { "value" : 0, "name" : "BYTES_WRITTEN" } ] } ] } } +---+ <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/tasks/task_1326381300833_2_2_m_0/counters Accept: application/xml ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 2660 Server: Jetty(6.1.26) +---+ Response Body: +---+ task_1326381300833_2_2_m_0 org.apache.hadoop.mapreduce.FileSystemCounter FILE_BYTES_READ 2363 FILE_BYTES_WRITTEN 54372 FILE_READ_OPS 0 FILE_LARGE_READ_OPS 0 FILE_WRITE_OPS 0 HDFS_BYTES_READ 0 HDFS_BYTES_WRITTEN 0 HDFS_READ_OPS 0 HDFS_LARGE_READ_OPS 0 HDFS_WRITE_OPS 0 org.apache.hadoop.mapreduce.TaskCounter COMBINE_INPUT_RECORDS 0 COMBINE_OUTPUT_RECORDS 0 REDUCE_INPUT_GROUPS 460 REDUCE_SHUFFLE_BYTES 2235 REDUCE_INPUT_RECORDS 460 REDUCE_OUTPUT_RECORDS 0 SPILLED_RECORDS 0 SHUFFLED_MAPS 1 FAILED_SHUFFLE 0 MERGED_MAP_OUTPUTS 1 GC_TIME_MILLIS 26 CPU_MILLISECONDS 860 PHYSICAL_MEMORY_BYTES 107839488 VIRTUAL_MEMORY_BYTES 1123147776 COMMITTED_HEAP_BYTES 57475072 Shuffle Errors BAD_ID 0 CONNECTION 0 IO_ERROR 0 WRONG_LENGTH 0 WRONG_MAP 0 WRONG_REDUCE 0 org.apache.hadoop.mapreduce.lib.output.FileOutputFormatCounter BYTES_WRITTEN 0 +---+ ** Task Attempts API With the task attempts API, you can obtain a collection of resources that represent a task attempt within a job. When you run a GET operation on this resource, you obtain a collection of Task Attempt Objects. *** URI ------ * http:///ws/v1/history/mapreduce/jobs/{jobid}/tasks/{taskid}/attempts ------ *** HTTP Operations Supported ------ * GET ------ *** Query Parameters Supported ------ None ------ *** Elements of the object When you make a request for the list of task attempts, the information will be returned as an array of task attempt objects. See also {{Task Attempt API}} for syntax of the task object. *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | taskAttempt | array of task attempt objects(JSON)/zero or more task attempt objects(XML) | The collection of task attempt objects | *---------------+--------------+--------------------------------+ *** Response Examples <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/tasks/task_1326381300833_2_2_m_0/attempts ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26) +---+ Response Body: +---+ { "taskAttempts" : { "taskAttempt" : [ { "assignedContainerId" : "container_1326381300833_0002_01_000002", "progress" : 100, "elapsedTime" : 2638, "state" : "SUCCEEDED", "diagnostics" : "", "rack" : "/98.139.92.0", "nodeHttpAddress" : "host.domain.com:8042", "startTime" : 1326381450680, "id" : "attempt_1326381300833_2_2_m_0_0", "type" : "MAP", "finishTime" : 1326381453318 } ] } } +---+ <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/tasks/task_1326381300833_2_2_m_0/attempts Accept: application/xml ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 537 Server: Jetty(6.1.26) +---+ Response Body: +---+ 1326381450680 1326381453318 2638 100.0 attempt_1326381300833_2_2_m_0_0 /98.139.92.0 SUCCEEDED host.domain.com:8042 MAP container_1326381300833_0002_01_000002 +---+ ** {Task Attempt API} A Task Attempt resource contains information about a particular task attempt within a job. *** URI Use the following URI to obtain an Task Attempt Object, from a task identified by the {attemptid} value. ------ * http:///ws/v1/history/mapreduce/jobs/{jobid}/tasks/{taskid}/attempt/{attemptid} ------ *** HTTP Operations Supported ------ * GET ------ *** Query Parameters Supported ------ None ------ *** Elements of the object *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | id | string | The task id | *---------------+--------------+--------------------------------+ | rack | string | The rack | *---------------+--------------+--------------------------------+ | state | string | The state of the task attempt - valid values are: NEW, UNASSIGNED, ASSIGNED, RUNNING, COMMIT_PENDING, SUCCESS_CONTAINER_CLEANUP, SUCCEEDED, FAIL_CONTAINER_CLEANUP, FAIL_TASK_CLEANUP, FAILED, KILL_CONTAINER_CLEANUP, KILL_TASK_CLEANUP, KILLED | *---------------+--------------+--------------------------------+ | type | string | The type of task | *---------------+--------------+--------------------------------+ | assignedContainerId | string | The container id this attempt is assigned to| *---------------+--------------+--------------------------------+ | nodeHttpAddress | string | The http address of the node this task attempt ran on | *---------------+--------------+--------------------------------+ | diagnostics| string | A diagnostics message | *---------------+--------------+--------------------------------+ | progress | float | The progress of the task attempt as a percent| *---------------+--------------+--------------------------------+ | startTime | long | The time in which the task attempt started (in ms since epoch)| *---------------+--------------+--------------------------------+ | finishTime | long | The time in which the task attempt finished (in ms since epoch)| *---------------+--------------+--------------------------------+ | elapsedTime | long | The elapsed time since the task attempt started (in ms)| *---------------+--------------+--------------------------------+ For reduce task attempts you also have the following fields: *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | shuffleFinishTime | long | The time at which shuffle finished (in ms since epoch)| *---------------+--------------+--------------------------------+ | mergeFinishTime | long | The time at which merge finished (in ms since epoch)| *---------------+--------------+--------------------------------+ | elapsedShuffleTime | long | The time it took for the shuffle phase to complete (time in ms between reduce task start and shuffle finish)| *---------------+--------------+--------------------------------+ | elapsedMergeTime | long | The time it took for the merge phase to complete (time in ms between the shuffle finish and merge finish)| *---------------+--------------+--------------------------------+ | elapsedReduceTime | long | The time it took for the reduce phase to complete (time in ms between merge finish to end of reduce task)| *---------------+--------------+--------------------------------+ *** Response Examples <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/tasks/task_1326381300833_2_2_m_0/attempts/attempt_1326381300833_2_2_m_0_0 ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26) +---+ Response Body: +---+ { "taskAttempt" : { "assignedContainerId" : "container_1326381300833_0002_01_000002", "progress" : 100, "elapsedTime" : 2638, "state" : "SUCCEEDED", "diagnostics" : "", "rack" : "/98.139.92.0", "nodeHttpAddress" : "host.domain.com:8042", "startTime" : 1326381450680, "id" : "attempt_1326381300833_2_2_m_0_0", "type" : "MAP", "finishTime" : 1326381453318 } } +---+ <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/tasks/task_1326381300833_2_2_m_0/attempts/attempt_1326381300833_2_2_m_0_0 Accept: application/xml ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 691 Server: Jetty(6.1.26) +---+ Response Body: +---+ 1326381450680 1326381453318 2638 100.0 attempt_1326381300833_2_2_m_0_0 /98.139.92.0 SUCCEEDED host.domain.com:8042 MAP container_1326381300833_0002_01_000002 +---+ ** Task Attempt Counters API With the task attempt counters API, you can object a collection of resources that represent al the counters for that task attempt. *** URI ------ * http:///ws/v1/history/mapreduce/jobs/{jobid}/tasks/{taskid}/attempt/{attemptid}/counters ------ *** HTTP Operations Supported ------ * GET ------ *** Query Parameters Supported ------ None ------ *** Elements of the object *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | id | string | The task attempt id | *---------------+--------------+-------------------------------+ | taskAttemptcounterGroup | array of task attempt counterGroup objects(JSON)/zero or more task attempt counterGroup objects(XML) | A collection of task attempt counter group objects | *---------------+--------------+-------------------------------+ *** Elements of the object *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | counterGroupName | string | The name of the counter group | *---------------+--------------+-------------------------------+ | counter | array of counter objects(JSON)/zero or more counter objects(XML) | A collection of counter objects | *---------------+--------------+-------------------------------+ *** Elements of the object *---------------+--------------+-------------------------------+ || Item || Data Type || Description | *---------------+--------------+-------------------------------+ | name | string | The name of the counter | *---------------+--------------+-------------------------------+ | value | long | The value of the counter | *---------------+--------------+-------------------------------+ *** Response Examples <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/tasks/task_1326381300833_2_2_m_0/attempts/attempt_1326381300833_2_2_m_0_0/counters ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26) +---+ Response Body: +---+ { "jobTaskAttemptCounters" : { "taskAttemptCounterGroup" : [ { "counterGroupName" : "org.apache.hadoop.mapreduce.FileSystemCounter", "counter" : [ { "value" : 2363, "name" : "FILE_BYTES_READ" }, { "value" : 54372, "name" : "FILE_BYTES_WRITTEN" }, { "value" : 0, "name" : "FILE_READ_OPS" }, { "value" : 0, "name" : "FILE_LARGE_READ_OPS" }, { "value" : 0, "name" : "FILE_WRITE_OPS" }, { "value" : 0, "name" : "HDFS_BYTES_READ" }, { "value" : 0, "name" : "HDFS_BYTES_WRITTEN" }, { "value" : 0, "name" : "HDFS_READ_OPS" }, { "value" : 0, "name" : "HDFS_LARGE_READ_OPS" }, { "value" : 0, "name" : "HDFS_WRITE_OPS" } ] }, { "counterGroupName" : "org.apache.hadoop.mapreduce.TaskCounter", "counter" : [ { "value" : 0, "name" : "COMBINE_INPUT_RECORDS" }, { "value" : 0, "name" : "COMBINE_OUTPUT_RECORDS" }, { "value" : 460, "name" : "REDUCE_INPUT_GROUPS" }, { "value" : 2235, "name" : "REDUCE_SHUFFLE_BYTES" }, { "value" : 460, "name" : "REDUCE_INPUT_RECORDS" }, { "value" : 0, "name" : "REDUCE_OUTPUT_RECORDS" }, { "value" : 0, "name" : "SPILLED_RECORDS" }, { "value" : 1, "name" : "SHUFFLED_MAPS" }, { "value" : 0, "name" : "FAILED_SHUFFLE" }, { "value" : 1, "name" : "MERGED_MAP_OUTPUTS" }, { "value" : 26, "name" : "GC_TIME_MILLIS" }, { "value" : 860, "name" : "CPU_MILLISECONDS" }, { "value" : 107839488, "name" : "PHYSICAL_MEMORY_BYTES" }, { "value" : 1123147776, "name" : "VIRTUAL_MEMORY_BYTES" }, { "value" : 57475072, "name" : "COMMITTED_HEAP_BYTES" } ] }, { "counterGroupName" : "Shuffle Errors", "counter" : [ { "value" : 0, "name" : "BAD_ID" }, { "value" : 0, "name" : "CONNECTION" }, { "value" : 0, "name" : "IO_ERROR" }, { "value" : 0, "name" : "WRONG_LENGTH" }, { "value" : 0, "name" : "WRONG_MAP" }, { "value" : 0, "name" : "WRONG_REDUCE" } ] }, { "counterGroupName" : "org.apache.hadoop.mapreduce.lib.output.FileOutputFormatCounter", "counter" : [ { "value" : 0, "name" : "BYTES_WRITTEN" } ] } ], "id" : "attempt_1326381300833_2_2_m_0_0" } } +---+ <> HTTP Request: ------ GET http:///ws/v1/history/mapreduce/jobs/job_1326381300833_2_2/tasks/task_1326381300833_2_2_m_0/attempts/attempt_1326381300833_2_2_m_0_0/counters Accept: application/xml ------ Response Header: +---+ HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 2735 Server: Jetty(6.1.26) +---+ Response Body: +---+ attempt_1326381300833_2_2_m_0_0 org.apache.hadoop.mapreduce.FileSystemCounter FILE_BYTES_READ 2363 FILE_BYTES_WRITTEN 54372 FILE_READ_OPS 0 FILE_LARGE_READ_OPS 0 FILE_WRITE_OPS 0 HDFS_BYTES_READ 0 HDFS_BYTES_WRITTEN 0 HDFS_READ_OPS 0 HDFS_LARGE_READ_OPS 0 HDFS_WRITE_OPS 0 org.apache.hadoop.mapreduce.TaskCounter COMBINE_INPUT_RECORDS 0 COMBINE_OUTPUT_RECORDS 0 REDUCE_INPUT_GROUPS 460 REDUCE_SHUFFLE_BYTES 2235 REDUCE_INPUT_RECORDS 460 REDUCE_OUTPUT_RECORDS 0 SPILLED_RECORDS 0 SHUFFLED_MAPS 1 FAILED_SHUFFLE 0 MERGED_MAP_OUTPUTS 1 GC_TIME_MILLIS 26 CPU_MILLISECONDS 860 PHYSICAL_MEMORY_BYTES 107839488 VIRTUAL_MEMORY_BYTES 1123147776 COMMITTED_HEAP_BYTES 57475072 Shuffle Errors BAD_ID 0 CONNECTION 0 IO_ERROR 0 WRONG_LENGTH 0 WRONG_MAP 0 WRONG_REDUCE 0 org.apache.hadoop.mapreduce.lib.output.FileOutputFormatCounter BYTES_WRITTEN 0 +---+