Package org.apache.druid.metadata.segment.cache

Class ReadWriteCache

java.lang.Object

org.apache.druid.metadata.segment.cache.ReadWriteCache

All Implemented Interfaces:

DatasourceSegmentCache, DatasourceSegmentMetadataReader, DatasourceSegmentMetadataWriter

public abstract class ReadWriteCache
extends Object
implements DatasourceSegmentCache

Cache with standard read/write locking.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	ReadWriteCache.Action

Constructor Summary

Constructors

Constructor	Description
ReadWriteCache(boolean fair)

Method Summary

Modifier and Type	Method	Description
void	stop()	Stops this cache.
<T> T	withReadLock(com.google.common.base.Supplier<T> action)
<T> T	withWriteLock(com.google.common.base.Supplier<T> action)
void	withWriteLock(ReadWriteCache.Action action)

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.metadata.segment.DatasourceSegmentMetadataReader

findExistingSegmentIds, findHighestUnusedSegmentId, findPendingSegmentIds, findPendingSegmentIdsWithExactInterval, findPendingSegments, findPendingSegmentsOverlapping, findPendingSegmentsWithExactInterval, findSegment, findSegments, findSegmentsWithSchema, findUnusedSegments, findUsedSegment, findUsedSegmentIdsOverlapping, findUsedSegments, findUsedSegmentsOverlappingAnyOf, findUsedSegmentsPlusOverlappingAnyOf

Methods inherited from interface org.apache.druid.metadata.segment.DatasourceSegmentMetadataWriter

deleteAllPendingSegments, deletePendingSegments, deletePendingSegments, deletePendingSegmentsCreatedIn, deleteSegments, insertPendingSegment, insertPendingSegments, insertSegments, insertSegmentsWithMetadata, markAllSegmentsAsUnused, markSegmentAsUnused, markSegmentsAsUnused, markSegmentsWithinIntervalAsUnused, updateSegmentPayload

Constructor Details

ReadWriteCache

public ReadWriteCache(boolean fair)

Method Details

stop

public void stop()

Stops this cache. Any subsequent read/write action performed on this cache will throw a defensive DruidException.

withWriteLock

public void withWriteLock(ReadWriteCache.Action action)

withWriteLock

public <T> T withWriteLock(com.google.common.base.Supplier<T> action)

withReadLock

public <T> T withReadLock(com.google.common.base.Supplier<T> action)