You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@hbase.apache.org by "Gary Helmling (JIRA)" <ji...@apache.org> on 2016/04/15 03:24:25 UTC
[jira] [Created] (HBASE-15658) RegionServerCallable /
RpcRetryingCaller clear meta cache on retries
Gary Helmling created HBASE-15658:
-------------------------------------
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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)