org.apache.druid.server.coordinator.duty

Class NewestSegmentFirstIterator

java.lang.Object

org.apache.druid.server.coordinator.duty.NewestSegmentFirstIterator

All Implemented Interfaces:

Iterator<List<DataSegment>>, CompactionSegmentIterator

public class NewestSegmentFirstIterator
extends Object
implements CompactionSegmentIterator

This class iterates all segments of the dataSources configured for compaction from the newest to the oldest.

Method Summary

Modifier and Type	Method and Description
boolean	hasNext()
List<DataSegment>	next()
Map<String,CompactionStatistics>	totalCompactedStatistics() Return a map of dataSourceName to CompactionStatistics.
Map<String,CompactionStatistics>	totalSkippedStatistics() Return a map of dataSourceName to CompactionStatistics.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Method Detail

totalCompactedStatistics

public Map<String,CompactionStatistics> totalCompactedStatistics()

Description copied from interface: CompactionSegmentIterator

Return a map of dataSourceName to CompactionStatistics. This method returns the aggregated statistics of segments that was already compacted and does not need to be compacted again. Hence, segment that were not returned by the Iterator.next() becuase it does not needs compaction. Note that the aggregations returned by this method is only up to the current point of the iterator being iterated.

Specified by:

totalCompactedStatistics in interface CompactionSegmentIterator

totalSkippedStatistics

public Map<String,CompactionStatistics> totalSkippedStatistics()

Description copied from interface: CompactionSegmentIterator

Return a map of dataSourceName to CompactionStatistics. This method returns the aggregated statistics of segments that was skipped as it cannot be compacted. Hence, segment that were not returned by the Iterator.next() becuase it cannot be compacted. Note that the aggregations returned by this method is only up to the current point of the iterator being iterated.

Specified by:

totalSkippedStatistics in interface CompactionSegmentIterator

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<List<DataSegment>>

next

public List<DataSegment> next()

Specified by:

next in interface Iterator<List<DataSegment>>