org.apache.hadoop.hbase.util

Class ServerRegionReplicaUtil

java.lang.Object

org.apache.hadoop.hbase.client.RegionReplicaUtil

org.apache.hadoop.hbase.util.ServerRegionReplicaUtil

public class ServerRegionReplicaUtil
extends RegionReplicaUtil

Similar to RegionReplicaUtil but for the server side

Constructor Summary

Constructors

Constructor and Description
ServerRegionReplicaUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static HRegionInfo	getRegionInfoForFs(HRegionInfo regionInfo) Returns the regionInfo object to use for interacting with the file system.
static StoreFileInfo	getStoreFileInfo(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.FileSystem fs, HRegionInfo regionInfo, HRegionInfo regionInfoForFs, String familyName, org.apache.hadoop.fs.FileStatus status) Returns a StoreFileInfo from the given FileStatus.
static boolean	isReadOnly(HRegion region) Returns whether this region replica can accept writes.
static boolean	shouldReplayRecoveredEdits(HRegion region) Returns whether to replay the recovered edits to flush the results.

Methods inherited from class org.apache.hadoop.hbase.client.RegionReplicaUtil

getRegionInfoForDefaultReplica, getRegionInfoForReplica, isDefaultReplica, isDefaultReplica, removeNonDefaultRegions

Methods inherited from class java.lang.Object

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

Constructor Detail

ServerRegionReplicaUtil

public ServerRegionReplicaUtil()

Method Detail

getRegionInfoForFs

public static HRegionInfo getRegionInfoForFs(HRegionInfo regionInfo)

Returns the regionInfo object to use for interacting with the file system.

Returns:

An HRegionInfo object to interact with the filesystem

isReadOnly

public static boolean isReadOnly(HRegion region)

Returns whether this region replica can accept writes.

Parameters:

region - the HRegion object

Returns:

whether the replica is read only

shouldReplayRecoveredEdits

public static boolean shouldReplayRecoveredEdits(HRegion region)

Returns whether to replay the recovered edits to flush the results. Currently secondary region replicas do not replay the edits, since it would cause flushes which might affect the primary region. Primary regions even opened in read only mode should replay the edits.

Parameters:

region - the HRegion object

Returns:

whether recovered edits should be replayed.

getStoreFileInfo

public static StoreFileInfo getStoreFileInfo(org.apache.hadoop.conf.Configuration conf,
                             org.apache.hadoop.fs.FileSystem fs,
                             HRegionInfo regionInfo,
                             HRegionInfo regionInfoForFs,
                             String familyName,
                             org.apache.hadoop.fs.FileStatus status)
                                      throws IOException

Returns a StoreFileInfo from the given FileStatus. Secondary replicas refer to the files of the primary region, so an HFileLink is used to construct the StoreFileInfo. This way ensures that the secondary will be able to continue reading the store files even if they are moved to archive after compaction

Throws:

IOException