Marcin Januszkiewicz created HBASE-17556:
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Summary: 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: 0.98.24, 1.0.0, 2.0.0
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.
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