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Posted to issues@hbase.apache.org by "Jimmy Xiang (JIRA)" <ji...@apache.org> on 2014/08/08 23:53:14 UTC
[jira] [Issue Comment Deleted] (HBASE-11659) Region state RPC call
is not idempotent
[ https://issues.apache.org/jira/browse/HBASE-11659?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jimmy Xiang updated HBASE-11659:
--------------------------------
Comment: was deleted
(was: Attached v2 with minor changes. Verified that standalone/pseudo distributed modes work fine.)
> Region state RPC call is not idempotent
> ---------------------------------------
>
> Key: HBASE-11659
> URL: https://issues.apache.org/jira/browse/HBASE-11659
> Project: HBase
> Issue Type: Bug
> Components: Region Assignment
> Reporter: Virag Kothari
> Assignee: Virag Kothari
> Attachments: HBASE-11659.patch, HBASE-11659.patch
>
>
> Here is the scenario on 0.98 with zk-less assignment
> The master gets an OPEN RPC call from region server.
> So, it moves the region state from PENDING_OPEN to OPEN.
> But, the call timeouts on the region server and region server retries sending the OPEN call. However, now the master throws an Exception saying the region is not PENDING_OPEN. So, the region servers aborts the region on receiving that exception and sends FAILED_OPEN to master. But the master cannot change its state from FAILED_OPEN to OPEN, so eventually the master keeps the state as OPEN while the actual region is no longer open on region server.
> The master should not throw an exception on receiving OPEN RPC calls multiple times.
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