Package org.apache.accumulo.server.fs

Class VolumeUtil

java.lang.Object

org.apache.accumulo.server.fs.VolumeUtil

public class VolumeUtil
extends Object

Utility methods for managing absolute URIs contained in Accumulo metadata.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	VolumeUtil.TabletFiles

Constructor Summary

Constructors

Constructor	Description
VolumeUtil()

Method Summary

Modifier and Type	Method	Description
static String	removeTrailingSlash(String path)
static org.apache.hadoop.fs.Path	removeTrailingSlash(org.apache.hadoop.fs.Path path)
static String	switchRootTableVolume(ServerContext context, String location)
static String	switchVolume(String path, VolumeManager.FileType ft, List<Pair<org.apache.hadoop.fs.Path,org.apache.hadoop.fs.Path>> replacements)
static VolumeUtil.TabletFiles	updateTabletVolumes(ServerContext context, ZooLock zooLock, VolumeManager vm, KeyExtent extent, VolumeUtil.TabletFiles tabletFiles, boolean replicate)	This method does two things.

Methods inherited from class java.lang.Object

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

Constructor Detail

VolumeUtil

public VolumeUtil()

Method Detail

removeTrailingSlash

public static String removeTrailingSlash(String path)

removeTrailingSlash

public static org.apache.hadoop.fs.Path removeTrailingSlash(org.apache.hadoop.fs.Path path)

switchVolume

public static String switchVolume(String path,
                                  VolumeManager.FileType ft,
                                  List<Pair<org.apache.hadoop.fs.Path,org.apache.hadoop.fs.Path>> replacements)

switchRootTableVolume

public static String switchRootTableVolume(ServerContext context,
                                           String location)
                                    throws IOException

Throws:

IOException

updateTabletVolumes

public static VolumeUtil.TabletFiles updateTabletVolumes(ServerContext context,
                                                         ZooLock zooLock,
                                                         VolumeManager vm,
                                                         KeyExtent extent,
                                                         VolumeUtil.TabletFiles tabletFiles,
                                                         boolean replicate)
                                                  throws IOException

This method does two things. First, it switches any volumes a tablet is using that are configured in instance.volumes.replacements. Second, if a tablet dir is no longer configured for use it chooses a new tablet directory.

Throws:

IOException