Gary Helmling created HBASE-15658:
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Summary: RegionServerCallable / RpcRetryingCaller clear meta cache
on retries
Key: HBASE-15658
URL: https://issues.apache.org/jira/browse/HBASE-15658
Project: HBase
Issue Type: Sub-task
Components: Client
Affects Versions: 1.2.1
Reporter: Gary Helmling
Priority: Critical
When RpcRetryingCaller.callWithRetries() attempts a retry, it calls
RetryingCallable.prepare(tries != 0). For RegionServerCallable (and probably
others), this will wind up calling
RegionLocator.getRegionLocation(reload=true), which will drop the meta cache
for the given region and always go back to meta.
This is kind of silly, since in the case of exceptions, we already call
RetryingCallable.throwable(), which goes to great pains to only refresh the
meta cache when necessary. Since we are already doing this on failure, I don't
really understand why we are doing duplicate work to refresh the meta cache on
prepare() at all.
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