org.apache.hadoop.hbase.regionserver

Class StoreFileComparators

java.lang.Object

org.apache.hadoop.hbase.regionserver.StoreFileComparators

@InterfaceAudience.Private
final class StoreFileComparators
extends Object

Useful comparators for comparing store files.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	StoreFileComparators.GetBulkTime
private static class	StoreFileComparators.GetFileSize
private static class	StoreFileComparators.GetMaxTimestamp
private static class	StoreFileComparators.GetPathName
private static class	StoreFileComparators.GetSeqId

Field Summary

Fields

Modifier and Type	Field and Description
static Comparator<HStoreFile>	SEQ_ID Comparator that compares based on the Sequence Ids of the the store files.
static Comparator<HStoreFile>	SEQ_ID_MAX_TIMESTAMP Comparator for time-aware compaction.

Constructor Summary

Constructors

Constructor and Description
StoreFileComparators()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

SEQ_ID

public static final Comparator<HStoreFile> SEQ_ID

Comparator that compares based on the Sequence Ids of the the store files. Bulk loads that did not request a seq ID are given a seq id of -1; thus, they are placed before all non- bulk loads, and bulk loads with sequence Id. Among these files, the size is used to determine the ordering, then bulkLoadTime. If there are ties, the path name is used as a tie-breaker.

SEQ_ID_MAX_TIMESTAMP

public static final Comparator<HStoreFile> SEQ_ID_MAX_TIMESTAMP

Comparator for time-aware compaction. SeqId is still the first ordering criterion to maintain MVCC.

Constructor Detail

StoreFileComparators

StoreFileComparators()