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HBase, mail # dev - Replication hosed after simple cluster restart


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lars hofhansl 2013-03-14, 01:12
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lars hofhansl 2013-03-14, 01:22
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Stack 2013-03-14, 01:43
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Re: Replication hosed after simple cluster restart
lars hofhansl 2013-03-14, 01:52
No, this all RSs trying to copy the failed RS' queues over. Most of them will fail, but still report all the queues that they *tried* to move. For each of those a ReplicationSource is setup, which then fails when attempting to update the replication status (because their ZK nodes were never created) and then causing the RS to abort (because the RS is setup as abortable for the zkHelper used here - which actually might be yet another problem).

-- Lars

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 From: Stack <[EMAIL PROTECTED]>
To: HBase Dev List <[EMAIL PROTECTED]>
Sent: Wednesday, March 13, 2013 6:43 PM
Subject: Re: Replication hosed after simple cluster restart
 
Not sure I follow.  Is this our making use of multi against a zk ensemble
that doesn't support it?
On Mar 13, 2013 6:22 PM, "lars hofhansl" <[EMAIL PROTECTED]> wrote:

> I suppose the problem could be in
> zkHelper.copyQueuesFromRSUsingMulti(rsZnode) as called from
> ReplicationSourceManager.NodeFailoverWorker.run().
> copyQueuesFromRSUsingMulti will return the queues it read even when the
> multi operation failed (because another RS managed to execute it first).
>
> -- Lars
>
>
>
> ________________________________
>  From: lars hofhansl <[EMAIL PROTECTED]>
> To: hbase-dev <[EMAIL PROTECTED]>
> Sent: Wednesday, March 13, 2013 6:12 PM
> Subject: Replication hosed after simple cluster restart
>
> We just ran into an interesting scenario. We restarted a cluster that was
> setup as a replication source.
> The stop went cleanly.
>
> Upon restart *all* regionservers aborted within a few seconds with
> variations of these errors:
> http://pastebin.com/3iQVuBqS
>
> This is scary!
>
> -- Lars
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Ted Yu 2013-03-14, 01:17
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lars hofhansl 2013-03-14, 01:27
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Himanshu Vashishtha 2013-03-14, 01:38
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lars hofhansl 2013-03-14, 01:45
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Ted Yu 2013-03-14, 03:06
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Andrew Purtell 2013-03-14, 03:22
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Himanshu Vashishtha 2013-03-14, 03:26
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lars hofhansl 2013-03-14, 03:48
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Himanshu Vashishtha 2013-03-14, 03:59
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lars hofhansl 2013-03-14, 04:16
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Jean-Marc Spaggiari 2013-03-14, 12:39
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Himanshu Vashishtha 2013-03-14, 03:13
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Himanshu Vashishtha 2013-03-14, 01:51
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Himanshu Vashishtha 2013-03-14, 01:52