Package org.apache.druid.segment.loading

Class AcquireSegmentResult

java.lang.Object

org.apache.druid.segment.loading.AcquireSegmentResult

public class AcquireSegmentResult
extends Object

Wraps a ReferenceCountedObjectProvider<Segment> with additional measurements about segment loading, if it was required

Constructor Summary

Constructors

Constructor	Description
AcquireSegmentResult(ReferenceCountedObjectProvider<Segment> referenceProvider, long loadSizeBytes, long waitTimeNanos, long loadTimeNanos)

Method Summary

Modifier and Type	Method	Description
static AcquireSegmentResult	cached(ReferenceCountedObjectProvider<Segment> provider)
static AcquireSegmentResult	empty()
long	getLoadSizeBytes()	Amount of data loaded into the cache, or 0 if it was already available in the cache
long	getLoadTimeNanos()	Amount of time spent loading a segment, or 0 if the segment was already available in the cache
ReferenceCountedObjectProvider<Segment>	getReferenceProvider()	Segment reference provider for loaded segment
long	getWaitTimeNanos()	Amount of time spent waiting before actually loading the segment (e.g.

Methods inherited from class java.lang.Object

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

Constructor Details

AcquireSegmentResult

public AcquireSegmentResult(ReferenceCountedObjectProvider<Segment> referenceProvider,
 long loadSizeBytes,
 long waitTimeNanos,
 long loadTimeNanos)

Method Details

empty

public static AcquireSegmentResult empty()

cached

public static AcquireSegmentResult cached(ReferenceCountedObjectProvider<Segment> provider)

getReferenceProvider

public ReferenceCountedObjectProvider<Segment> getReferenceProvider()

Segment reference provider for loaded segment

getLoadSizeBytes

public long getLoadSizeBytes()

Amount of data loaded into the cache, or 0 if it was already available in the cache

getWaitTimeNanos

public long getWaitTimeNanos()

Amount of time spent waiting before actually loading the segment (e.g. if loads are done on a shared thread pool)

getLoadTimeNanos

public long getLoadTimeNanos()

Amount of time spent loading a segment, or 0 if the segment was already available in the cache