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https://issues.apache.org/jira/browse/HBASE-16008?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephen Yuan Jiang updated HBASE-16008:
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Status: Patch Available (was: Open)
> A robust way deal with early termination of HBCK
> ------------------------------------------------
>
> Key: HBASE-16008
> URL: https://issues.apache.org/jira/browse/HBASE-16008
> Project: HBase
> Issue Type: Improvement
> Components: hbck
> Reporter: Stephen Yuan Jiang
> Assignee: Stephen Yuan Jiang
> Attachments: HBASE-16008.v0-master.patch
>
>
> When HBCK is running, we want to disable Catalog Janitor, Balancer and
> Split/Merge. Today, the implementation is not robust. If HBCK is terminated
> earlier by Control-C, the changed state would not be reset to original.
> HBASE-15406 was trying to solve this problem for Split/Merge switch. The
> implementation is complicated, and it did not solve CJ and Balancer.
> We also have another problem is that to prevent multiple HBCK run, we used a
> file lock to indicate a running HBCK; earlier terminating might not clean up
> the file. Sometimes we have to manually remove the file so that future HBCK
> could run.
> The proposal to solve all the problem is to use a znode to indicate that one
> HBCK is running. CJ, balancer, and Split/Merge switch all look for this
> znode before doing it operation.
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