org.apache.hadoop.hbase.regionserver

Class StoreFile.Comparators

java.lang.Object

org.apache.hadoop.hbase.regionserver.StoreFile.Comparators

Enclosing class:

StoreFile

public abstract static class StoreFile.Comparators
extends java.lang.Object

Useful comparators for comparing StoreFiles.

Field Summary

Fields

Modifier and Type	Field and Description
static java.util.Comparator<StoreFile>	SEQ_ID Comparator that compares based on the Sequence Ids of the the StoreFiles.
static java.util.Comparator<StoreFile>	SEQ_ID_MAX_TIMESTAMP Comparator for time-aware compaction.

Constructor Summary

Constructors

Constructor and Description
Comparators()

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 java.util.Comparator<StoreFile> SEQ_ID

Comparator that compares based on the Sequence Ids of the the StoreFiles. 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 java.util.Comparator<StoreFile> SEQ_ID_MAX_TIMESTAMP

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

Constructor Detail

Comparators

public Comparators()