Package org.apache.hadoop.hbase.zookeeper

Class ZNodePaths

java.lang.Object

org.apache.hadoop.hbase.zookeeper.ZNodePaths

@Private
public class ZNodePaths
extends Object

Class that hold all the paths of znode for HBase.

Field Summary

Fields

Modifier and Type	Field	Description
final String	backupMasterAddressesZNode
final String	balancerZNode	Deprecated. Since 2.6.0, will be removed in 4.0.0.
final String	baseZNode
final String	clusterIdZNode
final String	clusterStateZNode
private static final String	DEFAULT_SNAPSHOT_CLEANUP_ZNODE
final String	drainingZNode
final String	hfileRefsZNode
final String	masterAddressZNode
final String	masterMaintZNode
static final String	META_ZNODE_PREFIX
static final String	META_ZNODE_PREFIX_CONF_KEY
private final String	metaZNodePrefix	The prefix of meta znode.
final String	namespaceZNode
final String	peersZNode
final String	queuesZNode
final String	regionNormalizerZNode	Deprecated. Since 2.6.0, will be removed in 4.0.0.
final String	replicationZNode
final String	rsZNode
final String	snapshotCleanupZNode	Deprecated. Since 2.6.0, will be removed in 4.0.0.
final String	splitLogZNode
final String	switchZNode	Deprecated. Since 2.6.0, will be removed in 4.0.0.
final String	tableZNode	Deprecated.
static final char	ZNODE_PATH_SEPARATOR

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	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
String	getRsPath(ServerName sn)
String	getZNodeForReplica(int replicaId)	Returns the znode string corresponding to a replicaId
boolean	isClientReadable(String path)	Returns whether the path is supposed to be readable by the client and DOES NOT contain sensitive information (world readable).
boolean	isMetaZNodePath(String path)	Returns True is the fully qualified path is for meta location
boolean	isMetaZNodePrefix(String znode)	Returns True if meta 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 Details

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).

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

@Deprecated
public final String balancerZNode

Deprecated.

Since 2.6.0, will be removed in 4.0.0. We use master local region to store this state.

regionNormalizerZNode

@Deprecated
public final String regionNormalizerZNode

Deprecated.

Since 2.6.0, will be removed in 4.0.0. We use master local region to store this state.

switchZNode

@Deprecated
public final String switchZNode

Deprecated.

Since 2.6.0, will be removed in 4.0.0. We use master local region to store this state.

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

@Deprecated
public final String snapshotCleanupZNode

Deprecated.

Since 2.6.0, will be removed in 4.0.0. We use master local region to store this state.

Constructor Details

ZNodePaths

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

Method Details

toString

public String toString()

Overrides:

toString in class Object

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.

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

isMetaZNodePrefix

public boolean isMetaZNodePrefix(String znode)

Returns True if meta znode.

isMetaZNodePath

public boolean isMetaZNodePath(String path)

Returns True is the fully qualified path is for meta location

isClientReadable

public boolean isClientReadable(String path)

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

getRsPath

public String getRsPath(ServerName sn)

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