org.apache.hadoop.hive.ql.txn.compactor

Class CompactorFactory

java.lang.Object

org.apache.hadoop.hive.ql.txn.compactor.CompactorFactory

public final class CompactorFactory
extends Object

Simple factory class, which returns an instance of QueryCompactor.

Method Summary

Modifier and Type	Method and Description
CompactorPipeline	getCompactorPipeline(org.apache.hadoop.hive.metastore.api.Table table, HiveConf configuration, CompactionInfo compactionInfo, IMetaStoreClient msc) Get an instance of Compactor.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getCompactorPipeline

public CompactorPipeline getCompactorPipeline(org.apache.hadoop.hive.metastore.api.Table table,
                                              HiveConf configuration,
                                              CompactionInfo compactionInfo,
                                              IMetaStoreClient msc)
                                       throws HiveException

Get an instance of Compactor. At the moment the following implementors can be fetched:

MajorQueryCompactor - handles query based major compaction
MinorQueryCompactor - handles query based minor compaction
MmMajorQueryCompactor - handles query based major compaction for micro-managed tables
MmMinorQueryCompactor - handles query based minor compaction for micro-managed tables
MRCompactor - handles MR based minor, major, or rebalance compaction
RebalanceQueryCompactor - handles query based rebalance compaction

Parameters:

msc - The IMetaStoreClient instance is used only by the MRCompactor.

table - the table, on which the compaction should be running, must be not null.

configuration - the hive configuration, must be not null.

compactionInfo - provides insight about the type of compaction, must be not null.

Returns:

QueryCompactor or null.

Throws:

HiveException