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https://issues.apache.org/jira/browse/HBASE-7244?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13626144#comment-13626144
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rajeshbabu commented on HBASE-7244:
-----------------------------------
[~enis]
started working on Harsh's suggestion(start-hbase.sh --formatzk).
you are also saying the same right?
This clean up script may help during testing/dev.
> Provide a command or argument to startup, that formats znodes if provided
> -------------------------------------------------------------------------
>
> Key: HBASE-7244
> URL: https://issues.apache.org/jira/browse/HBASE-7244
> Project: HBase
> Issue Type: New Feature
> Components: Zookeeper
> Affects Versions: 0.94.0
> Reporter: Harsh J
> Assignee: rajeshbabu
> Priority: Minor
> Fix For: 0.98.0, 0.94.8, 0.95.1
>
> Attachments: HBASE-7244_2.patch, HBASE-7244_3.patch, HBASE-7244.patch
>
>
> Many a times I've had to, and have seen instructions being thrown, to stop
> cluster, clear out ZK and restart.
> While this is only a quick (and painful to master) fix, it is certainly nifty
> to some smaller cluster users but the process is far too long, roughly:
> 1. Stop HBase
> 2. Start zkCli.sh and connect to the right quorum
> 3. Find and ensure the HBase parent znode from the configs (/hbase only by
> default)
> 4. Run an "rmr /hbase" in the zkCli.sh shell, or manually delete each znode
> if on a lower version of ZK.
> 5. Quit zkCli.sh and start HBase again
> Perhaps it may be useful, if the start-hbase.sh itself accepted a formatZK
> parameter. Such that, when you do a {{start-hbase.sh -formatZK}}, it does
> steps 2-4 automatically for you.
> For safety, we could make the formatter code ensure that no HBase instance is
> actually active, and skip the format process if it is. Similar to a HDFS
> NameNode's format, which would disallow if the name directories are locked.
> Would this be a useful addition for administrators? Bigtop too can provide a
> service subcommand that could do this.
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