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https://issues.apache.org/jira/browse/HBASE-3558?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Purtell resolved HBASE-3558.
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Resolution: Not a Problem
Current releases include logic for logging this warning
> Warnings if RS times are out of sync
> ------------------------------------
>
> Key: HBASE-3558
> URL: https://issues.apache.org/jira/browse/HBASE-3558
> Project: HBase
> Issue Type: Improvement
> Components: regionserver
> Affects Versions: 0.89.20100924
> Reporter: Sean Sechrist
> Priority: Minor
>
> Last night we ran into a problem with the times on RSs being out of sync by 1
> minute. The times were being reset by ~70s often because we were getting
> different responses from pool.ntpd.org.
> This caused lost ZK sessions and problems writing to datanodes, so all the
> RSs kept shutting down.
> I think it would be useful to have HBaseFsck check to see if the times on the
> region servers are out of sync. Or maybe put a warning on the master web ui
> or something.
> This seems related to HBASE-3168, but applies when region servers become out
> of sync once they already joined the cluster (due to NTP issues or something
> else).
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