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https://issues.apache.org/jira/browse/HBASE-17556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15843664#comment-15843664
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Enis Soztutar commented on HBASE-17556:
---------------------------------------
Some of the fixes are here:
{code}
commit 94d576025fd158dae03dd6a6b50a62483b0f04e0
Author: Mikhail Antonov <[email protected]>
Date: Wed Mar 16 16:32:11 2016 -0700
HBASE-15390 Unnecessary MetaCache evictions cause elevated number of
requests to meta
commit 43698b3fcb6b6759c5acae3b889e6b280c2205bd
Author: Mikhail Antonov <[email protected]>
Date: Mon Mar 7 17:33:43 2016 -0800
HBASE-15354 Use same criteria for clearing meta cache for all operations
(Ashu Pachauri)
commit d747188f2cb7d198393a35f4dde543a798fed3c8
Author: Josh Elser <[email protected]>
Date: Mon Feb 8 14:25:37 2016 -0500
HBASE-15232 Handle region location cache mgmt in AsyncProcess for multi()'s
{code}
Maybe you can take a look at the branch-1 or master code to see whether the
issue is still there. A unit test that can reproduce would be really useful if
you have the time.
> The client will not invalidate stale region caches
> --------------------------------------------------
>
> Key: HBASE-17556
> URL: https://issues.apache.org/jira/browse/HBASE-17556
> Project: HBase
> Issue Type: Bug
> Components: Client
> Affects Versions: 1.0.0, 2.0.0, 0.98.24
> Reporter: Marcin Januszkiewicz
> Priority: Critical
>
> We noticed in our application, that sometimes when we interact with a table
> an operation will fail with an exception, an all operations that happen on
> the same region will also fail until the application is restarted.
> It seems that when a merge or split happens on a region that is already in
> the clients cache, and the client is configured to retry operations, then
> there is no way for the client to detect this. In
> RpcRetryingCaller#callWithRetries if a call fails with
> RegionNotServingException then the cache will be cleared only if the retry
> parameter is equal to 1. This means the call will fail but the following
> calls will succeed.
> RpcRetryingCaller#callWithoutRetries contains the comment "It would be nice
> to clear the location cache here". Additionally, the stale cache will cause
> this call to fail, even though the data is available.
> See also HBASE-12534
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