[HBASE-1511] Pseudo distributed mode in LocalHBaseCluster

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.19.3
• Fix Version/s: 0.90.0
• Hadoop Flags: Reviewed
• Assignee: Nicolas Spiegelberg
• Reporter: Evgeny Ryabitskiy
• Created: 11/Jun/09 16:25
• Updated: 20/Nov/15 13:01
• Resolved: 19/Jul/10 23:35

Description

After changes to config and adding of parameter:

  <property>
    <name>hbase.cluster.distributed</name>
    <value>false</value>
    <description>The mode the cluster will be in. Possible values are
      false: standalone and pseudo-distributed setups with managed Zookeeper
      true: fully-distributed with unmanaged Zookeeper Quorum (see hbase-env.sh)
    </description>
  </property>

running HBase in pseudo destr mode become not so easy, I think description for false variant is wrong and you can't get pseudo-distributed mode setting this option to false now.

I wish to have some option in LocalHBaseCluster for pseudo destr mode where I wish to have:

• separate processes for Master and HRSs
• ability to dynamically change HRS number in cluster
• managed ZK cluster (like it is in local mode now)
• managed small local HDFS cluster

I think it is very useful for testing, debugging and for user experience with HBase, who want to try something close to real HBase not some emulation in standalone mode.

Issue Links

• is related to: HBASE-2841 Support psuedo-distributed ZooKeeper in HBase
• relates to: HBASE-3895 Fix order of parameters after HBASE-1511