org.apache.hadoop.hbase.zookeeper

Class ZNodePaths

java.lang.Object

org.apache.hadoop.hbase.zookeeper.ZNodePaths

@InterfaceAudience.Private
public class ZNodePaths
extends Object

Class that hold all the paths of znode for HBase.

Field Summary

Fields

Modifier and Type	Field and Description
String	backupMasterAddressesZNode
String	balancerZNode
String	baseZNode
String	clusterIdZNode
String	clusterStateZNode
private static String	DEFAULT_SNAPSHOT_CLEANUP_ZNODE
String	drainingZNode
String	hfileRefsZNode
String	masterAddressZNode
String	masterMaintZNode
static String	META_ZNODE_PREFIX
static String	META_ZNODE_PREFIX_CONF_KEY
private org.apache.hbase.thirdparty.com.google.common.collect.ImmutableMap<Integer,String>	metaReplicaZNodes znodes containing the locations of the servers hosting the meta replicas
private String	metaZNodePrefix The prefix of meta znode.
String	namespaceZNode
String	peersZNode
String	queuesZNode
String	regionNormalizerZNode
String	replicationZNode
String	rsZNode
(package private) String	snapshotCleanupZNode
String	splitLogZNode
String	switchZNode
String	tableZNode Deprecated.
static char	ZNODE_PATH_SEPARATOR

Constructor Summary

Constructors

Constructor and Description
ZNodePaths(org.apache.hadoop.conf.Configuration conf)

Method Summary

Modifier and Type	Method and Description
int	getMetaReplicaIdFromPath(String path) Parses the meta replicaId from the passed path.
int	getMetaReplicaIdFromZnode(String znode) Parse the meta replicaId from the passed znode
Collection<String>	getMetaReplicaZNodes()
String	getZNodeForReplica(int replicaId)
boolean	isAnyMetaReplicaZNode(String node)
boolean	isClientReadable(String node) Returns whether the znode is supposed to be readable by the client and DOES NOT contain sensitive information (world readable).
boolean	isMetaZNodePrefix(String znode)
static String	joinZNode(String prefix, String suffix) Join the prefix znode name with the suffix znode name to generate a proper full znode name.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

ZNODE_PATH_SEPARATOR

public static final char ZNODE_PATH_SEPARATOR

See Also:

Constant Field Values

META_ZNODE_PREFIX_CONF_KEY

public static final String META_ZNODE_PREFIX_CONF_KEY

See Also:

Constant Field Values

META_ZNODE_PREFIX

public static final String META_ZNODE_PREFIX

See Also:

Constant Field Values

DEFAULT_SNAPSHOT_CLEANUP_ZNODE

private static final String DEFAULT_SNAPSHOT_CLEANUP_ZNODE

See Also:

Constant Field Values

baseZNode

public final String baseZNode

metaZNodePrefix

private final String metaZNodePrefix

The prefix of meta znode. Does not include baseZNode. Its a 'prefix' because meta replica id integer can be tagged on the end (if no number present, it is 'default' replica).

metaReplicaZNodes

private final org.apache.hbase.thirdparty.com.google.common.collect.ImmutableMap<Integer,String> metaReplicaZNodes

znodes containing the locations of the servers hosting the meta replicas

rsZNode

public final String rsZNode

drainingZNode

public final String drainingZNode

masterAddressZNode

public final String masterAddressZNode

backupMasterAddressesZNode

public final String backupMasterAddressesZNode

clusterStateZNode

public final String clusterStateZNode

tableZNode

@Deprecated
public final String tableZNode

Deprecated.

clusterIdZNode

public final String clusterIdZNode

splitLogZNode

public final String splitLogZNode

balancerZNode

public final String balancerZNode

regionNormalizerZNode

public final String regionNormalizerZNode

switchZNode

public final String switchZNode

namespaceZNode

public final String namespaceZNode

masterMaintZNode

public final String masterMaintZNode

replicationZNode

public final String replicationZNode

peersZNode

public final String peersZNode

queuesZNode

public final String queuesZNode

hfileRefsZNode

public final String hfileRefsZNode

snapshotCleanupZNode

final String snapshotCleanupZNode

Constructor Detail

ZNodePaths

public ZNodePaths(org.apache.hadoop.conf.Configuration conf)

Method Detail

toString

public String toString()

Overrides:

toString in class Object

isAnyMetaReplicaZNode

public boolean isAnyMetaReplicaZNode(String node)

Returns:

true if the znode is a meta region replica

getMetaReplicaZNodes

public Collection<String> getMetaReplicaZNodes()

Returns:

Meta Replica ZNodes

getZNodeForReplica

public String getZNodeForReplica(int replicaId)

Returns:

the znode string corresponding to a replicaId

getMetaReplicaIdFromPath

public int getMetaReplicaIdFromPath(String path)

Parses the meta replicaId from the passed path.

Parameters:

path - the name of the full path which includes baseZNode.

Returns:

replicaId

getMetaReplicaIdFromZnode

public int getMetaReplicaIdFromZnode(String znode)

Parse the meta replicaId from the passed znode

Parameters:

znode - the name of the znode, does not include baseZNode

Returns:

replicaId

isMetaZNodePrefix

public boolean isMetaZNodePrefix(String znode)

Returns:

True if meta znode.

isClientReadable

public boolean isClientReadable(String node)

Returns whether the znode is supposed to be readable by the client and DOES NOT contain sensitive information (world readable).

joinZNode

public static String joinZNode(String prefix,
                               String suffix)

Join the prefix znode name with the suffix znode name to generate a proper full znode name.

Assumes prefix does not end with slash and suffix does not begin with it.

Parameters:

prefix - beginning of znode name

suffix - ending of znode name

Returns:

result of properly joining prefix with suffix