Modifier and Type | Class and Description |
---|---|
class |
ExecDriver
ExecDriver is the central class in co-ordinating execution of any map-reduce task.
|
class |
MapRedTask
Extension of ExecDriver:
- can optionally spawn a map-reduce task from a separate jvm
- will make last minute adjustments to map-reduce job parameters, viz:
* estimating number of reducers
* estimating whether job should run locally
|
Constructor and Description |
---|
HadoopJobExecHelper(org.apache.hadoop.mapred.JobConf job,
SessionState.LogHelper console,
Task<? extends Serializable> task,
HadoopJobExecHook hookCallBack) |
Modifier and Type | Class and Description |
---|---|
class |
MergeFileTask
Task for fast merging of ORC and RC files.
|
Modifier and Type | Class and Description |
---|---|
class |
PartialScanTask
PartialScanTask.
|
Modifier and Type | Class and Description |
---|---|
class |
ColumnTruncateTask |
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