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https://issues.apache.org/jira/browse/HBASE-4478?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ted Yu updated HBASE-4478:
--------------------------
Status: Patch Available (was: Open)
> Improve AssignmentManager.handleRegion so that it can process certain ZK
> state in the case of RS offline
> --------------------------------------------------------------------------------------------------------
>
> Key: HBASE-4478
> URL: https://issues.apache.org/jira/browse/HBASE-4478
> Project: HBase
> Issue Type: Bug
> Reporter: Ming Ma
> Assignee: ramkrishna.s.vasudevan
> Attachments: HBASE-4478_1.patch
>
>
> Currently AssignmentManager.handleRegion skips processing of ZK event change
> if the RS is offline. It relies on TimeoutMonitor and ServerShutdownHandler
> to process RIT.
> // Verify this is a known server
> if (!serverManager.isServerOnline(sn) &&
> !this.master.getServerName().equals(sn)) {
> LOG.warn("Attempted to handle region transition for server but " +
> "server is not online: " + Bytes.toString(data.getRegionName()));
> return;
> }
> For certain states like OPENED, OPENING, FAILED_OPEN, CLOSED, it can continue
> the progressing even if the RS is offline.
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