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From "Nicolas Spiegelberg (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HBASE-1511) Pseudo distributed mode in LocalHBaseCluster
Date Thu, 15 Jul 2010 00:43:50 GMT

     [ https://issues.apache.org/jira/browse/HBASE-1511?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Nicolas Spiegelberg reassigned HBASE-1511:

    Assignee: Nicolas Spiegelberg

> Pseudo distributed mode in LocalHBaseCluster
> --------------------------------------------
>                 Key: HBASE-1511
>                 URL: https://issues.apache.org/jira/browse/HBASE-1511
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 0.19.3
>            Reporter: Evgeny Ryabitskiy
>            Assignee: Nicolas Spiegelberg
>            Priority: Minor
>             Fix For: 0.92.0
> After changes to config and adding of parameter:
> {code}
>   <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>
> {code}
> 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
>  * 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.

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