Interface | Description |
---|---|
HadoopJobExecHook |
Class | Description |
---|---|
ExecDriver |
ExecDriver is the central class in co-ordinating execution of any map-reduce task.
|
ExecMapper |
ExecMapper is the generic Map class for Hive.
|
ExecMapper.ReportStats |
reportStats.
|
ExecMapperContext | |
ExecMapRunner<K1,V1,K2,V2> | |
ExecReducer |
ExecReducer is the generic Reducer class for Hive.
|
HadoopJobExecHelper | |
HashTableLoader |
HashTableLoader for MR loads the hashtable for MapJoins from local disk (hashtables
are distributed by using the DistributedCache.
|
JobDebugger |
JobDebugger takes a RunningJob that has failed and grabs the top 4 failing
tasks and outputs this information to the Hive CLI.
|
JobTrackerURLResolver |
JobTrackerURLResolver.
|
MapredLocalTask |
MapredLocalTask represents any local work (i.e.: client side work) that hive needs to
execute.
|
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
|
ObjectCache |
ObjectCache.
|
Throttle |
Intelligence to make clients wait if the cluster is in a bad state.
|
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