Package org.apache.druid.segment.realtime.appenderator

Class UnifiedIndexerAppenderatorsManager.LimitedPoolIndexMerger

java.lang.Object

org.apache.druid.segment.realtime.appenderator.UnifiedIndexerAppenderatorsManager.LimitedPoolIndexMerger

All Implemented Interfaces:

IndexMerger

Enclosing class:

UnifiedIndexerAppenderatorsManager

public static class UnifiedIndexerAppenderatorsManager.LimitedPoolIndexMerger
extends Object
implements IndexMerger

This wrapper around IndexMerger limits concurrent calls to the merge/persist methods used by StreamAppenderator with a shared executor service. Merge/persist methods that are not used by StreamAppenderator will throw an exception if called.

Field Summary

Fields inherited from interface org.apache.druid.segment.IndexMerger

INVALID_ROW, log, SERIALIZER_UTILS, UNLIMITED_MAX_COLUMNS_TO_MERGE

Constructor Summary

Constructors

Constructor	Description
LimitedPoolIndexMerger(IndexMerger baseMerger, com.google.common.util.concurrent.ListeningExecutorService mergeExecutor)

Method Summary

Modifier and Type	Method	Description
File	merge(List<IndexableAdapter> indexes, boolean rollup, AggregatorFactory[] metricAggs, File outDir, DimensionsSpec dimensionsSpec, IndexSpec indexSpec, int maxColumnsToMerge)
File	mergeQueryableIndex(List<QueryableIndex> indexes, boolean rollup, AggregatorFactory[] metricAggs, DimensionsSpec dimensionsSpec, File outDir, IndexSpec indexSpec, IndexSpec indexSpecForIntermediatePersists, ProgressIndicator progress, SegmentWriteOutMediumFactory segmentWriteOutMediumFactory, int maxColumnsToMerge)
File	persist(IncrementalIndex index, org.joda.time.Interval dataInterval, File outDir, IndexSpec indexSpec, ProgressIndicator progress, SegmentWriteOutMediumFactory segmentWriteOutMediumFactory)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.druid.segment.IndexMerger

mergeQueryableIndex, persist, persist

Constructor Details

LimitedPoolIndexMerger

public LimitedPoolIndexMerger(IndexMerger baseMerger,
 com.google.common.util.concurrent.ListeningExecutorService mergeExecutor)

Method Details

persist

public File persist(IncrementalIndex index,
 org.joda.time.Interval dataInterval,
 File outDir,
 IndexSpec indexSpec,
 ProgressIndicator progress,
 @Nullable
 SegmentWriteOutMediumFactory segmentWriteOutMediumFactory)

Specified by:

persist in interface IndexMerger

merge

public File merge(List<IndexableAdapter> indexes,
 boolean rollup,
 AggregatorFactory[] metricAggs,
 File outDir,
 DimensionsSpec dimensionsSpec,
 IndexSpec indexSpec,
 int maxColumnsToMerge)

Specified by:

merge in interface IndexMerger

mergeQueryableIndex

public File mergeQueryableIndex(List<QueryableIndex> indexes,
 boolean rollup,
 AggregatorFactory[] metricAggs,
 @Nullable
 DimensionsSpec dimensionsSpec,
 File outDir,
 IndexSpec indexSpec,
 IndexSpec indexSpecForIntermediatePersists,
 ProgressIndicator progress,
 @Nullable
 SegmentWriteOutMediumFactory segmentWriteOutMediumFactory,
 int maxColumnsToMerge)

Specified by:

mergeQueryableIndex in interface IndexMerger