org.apache.hadoop.hbase.zookeeper

Class ZKConfig

java.lang.Object

org.apache.hadoop.hbase.zookeeper.ZKConfig

@InterfaceAudience.Private
public class ZKConfig
extends Object

Utility methods for reading, and building the ZooKeeper configuration. The order and priority for reading the config are as follows: (1). zoo.cfg if ""hbase.config.read.zookeeper.config" is true (2). Property with "hbase.zookeeper.property." prefix from HBase XML (3). other zookeeper related properties in HBASE XML

Constructor Summary

Constructors

Constructor and Description
ZKConfig()

Method Summary

Methods

Modifier and Type	Method and Description
static String	buildQuorumServerString(String[] serverHosts, String clientPort) Build the ZK quorum server string with "server:clientport" list, separated by ','
static String	getZKQuorumServersString(org.apache.hadoop.conf.Configuration conf) Return the ZK Quorum servers string given the specified configuration.
static Properties	makeZKProps(org.apache.hadoop.conf.Configuration conf) Make a Properties object holding ZooKeeper config.
static Properties	parseZooCfg(org.apache.hadoop.conf.Configuration conf, InputStream inputStream) Deprecated. in 0.96 onwards. HBase will no longer rely on zoo.cfg availability.

Methods inherited from class java.lang.Object

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

Constructor Detail

ZKConfig

public ZKConfig()

Method Detail

makeZKProps

public static Properties makeZKProps(org.apache.hadoop.conf.Configuration conf)

Make a Properties object holding ZooKeeper config. Parses the corresponding config options from the HBase XML configs and generates the appropriate ZooKeeper properties.

Parameters:

conf - Configuration to read from.

Returns:

Properties holding mappings representing ZooKeeper config file.

parseZooCfg

@Deprecated
public static Properties parseZooCfg(org.apache.hadoop.conf.Configuration conf,
                                InputStream inputStream)
                              throws IOException

Deprecated. in 0.96 onwards. HBase will no longer rely on zoo.cfg availability.

Parse ZooKeeper's zoo.cfg, injecting HBase Configuration variables in. This method is used for testing so we can pass our own InputStream.

Parameters:

conf - HBaseConfiguration to use for injecting variables.

inputStream - InputStream to read from.

Returns:

Properties parsed from config stream with variables substituted.

Throws:

IOException - if anything goes wrong parsing config

buildQuorumServerString

public static String buildQuorumServerString(String[] serverHosts,
                             String clientPort)

Build the ZK quorum server string with "server:clientport" list, separated by ','

Parameters:

serverHosts - a list of servers for ZK quorum

clientPort - the default client port

Returns:

the string for a list of "server:port" separated by ","

getZKQuorumServersString

public static String getZKQuorumServersString(org.apache.hadoop.conf.Configuration conf)

Return the ZK Quorum servers string given the specified configuration.

Parameters:

conf -

Returns:

Quorum servers