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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-6860) [replication] HBASE-6550 is too aggressive, DDOSes .META.
Date Fri, 21 Sep 2012 21:38:08 GMT
Jean-Daniel Cryans created HBASE-6860:

             Summary: [replication] HBASE-6550 is too aggressive, DDOSes .META.
                 Key: HBASE-6860
                 URL: https://issues.apache.org/jira/browse/HBASE-6860
             Project: HBase
          Issue Type: Improvement
            Reporter: Jean-Daniel Cryans
            Priority: Blocker
             Fix For: 0.94.2, 0.96.0

I was doing maintenance on clusters and rebooting a replication slave was giving me a lot
of issues because the master wasn't able to read .META. while it was bombarded with getClosestRowBefore()
coming from all the ReplicationSinks. Since no regions are assigned, and it doesn't retry,
it goes straight back to the source which retries again.

Also it seems that in some cases with retries=1 we don't even recover from a stale .META.

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