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https://issues.apache.org/jira/browse/HBASE-15128?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15122446#comment-15122446
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Matteo Bertozzi commented on HBASE-15128:
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why a setSwitch() api instead of something like updateConfigurationProperty()
or something more generic?
to me introducing a new generic rpc that basically does only on/off seems to
bring us in a direction where 3/4 months from now we have to deal with how to
try to keep compatibility.
I prefer having the flag in normalizer, just because we keep down the number of
dynamic property that we have now. as soon as you add a generic setSwitch() api
that number will go up exponentially.
We talked already about having dynamic configuration changes, which to me seems
the generic solution that solve also this problem. so, why not trying to go in
that direction?
> Disable region splits and merges in HBCK
> ----------------------------------------
>
> Key: HBASE-15128
> URL: https://issues.apache.org/jira/browse/HBASE-15128
> Project: HBase
> Issue Type: Bug
> Reporter: Enis Soztutar
> Assignee: Heng Chen
> Fix For: 2.0.0, 1.3.0
>
> Attachments: HBASE-15128.patch, HBASE-15128_v1.patch,
> HBASE-15128_v3.patch
>
>
> In large clusters where region splits are frequent, and HBCK runs take
> longer, the concurrent splits cause further problems in HBCK since HBCK
> assumes a static state for the region partition map. We have just seen a case
> where HBCK undo's a concurrently splitting region causing number of
> inconsistencies to go up.
> We can have a mode in master where splits and merges are disabled like the
> balancer and catalog janitor switches. Master will reject the split requests
> if regionservers decide to split. This switch can be turned on / off by the
> admins and also automatically by HBCK while it is running (similar to
> balancer switch being disabled by HBCK).
> HBCK should also disable the Catalog Janitor just in case.
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