Package org.apache.druid.server.coordination

Class SegmentLoadDropHandler

java.lang.Object

org.apache.druid.server.coordination.SegmentLoadDropHandler

public class SegmentLoadDropHandler
extends Object

Responsible for loading and dropping of segments by a process that can serve segments.

Constructor Summary

Constructors

Constructor	Description
SegmentLoadDropHandler(SegmentLoaderConfig config, DataSegmentAnnouncer announcer, SegmentManager segmentManager)

Method Summary

Modifier and Type	Method	Description
void	addSegment(DataSegment segment, DataSegmentChangeCallback callback, SegmentLoadingMode loadingMode)
Map<String,Long>	getAverageNumOfRowsPerSegmentForDatasource()
Map<String,SegmentRowCountDistribution>	getRowCountDistributionPerDatasource()
SegmentLoaderConfig	getSegmentLoaderConfig()
Collection<DataSegment>	getSegmentsToDelete()
com.google.common.util.concurrent.ListenableFuture<List<DataSegmentChangeResponse>>	processBatch(List<DataSegmentChangeRequest> changeRequests, SegmentLoadingMode segmentLoadingMode)	Process a list of DataSegmentChangeRequest, invoking processRequest(DataSegmentChangeRequest, SegmentLoadingMode) for each one.
void	removeSegment(DataSegment segment, DataSegmentChangeCallback callback)

Methods inherited from class java.lang.Object

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

Constructor Details

SegmentLoadDropHandler

@Inject
public SegmentLoadDropHandler(SegmentLoaderConfig config,
 DataSegmentAnnouncer announcer,
 SegmentManager segmentManager)

Method Details

getAverageNumOfRowsPerSegmentForDatasource

public Map<String,Long> getAverageNumOfRowsPerSegmentForDatasource()

getRowCountDistributionPerDatasource

public Map<String,SegmentRowCountDistribution> getRowCountDistributionPerDatasource()

addSegment

public void addSegment(DataSegment segment,
 @Nullable
 DataSegmentChangeCallback callback,
 SegmentLoadingMode loadingMode)

removeSegment

public void removeSegment(DataSegment segment,
 @Nullable
 DataSegmentChangeCallback callback)

getSegmentsToDelete

public Collection<DataSegment> getSegmentsToDelete()

processBatch

public com.google.common.util.concurrent.ListenableFuture<List<DataSegmentChangeResponse>> processBatch(List<DataSegmentChangeRequest> changeRequests,
 SegmentLoadingMode segmentLoadingMode)

Process a list of DataSegmentChangeRequest, invoking processRequest(DataSegmentChangeRequest, SegmentLoadingMode) for each one. Handles the computation asynchronously and returns a future to the result.

getSegmentLoaderConfig

public SegmentLoaderConfig getSegmentLoaderConfig()