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From Ted Yu <yuzhih...@gmail.com>
Subject Re: Read operations hanged
Date Sun, 10 Aug 2014 17:32:24 GMT
bq.  if I can just rmr stuff under /hbase-unsecure/splitWAL/...

Please don't.

Have you checked region server log on dn29.manage.com ?

What hbase version are you using ?

Cheers


On Sun, Aug 10, 2014 at 10:27 AM, Thomas Kwan <thomas.kwan@manage.com>
wrote:

> And I have a program that do some read operations and it hangs. And I am
> seeing
>
> 2014-08-10 12:22:05,359 DEBUG [main]
> client.HConnectionManager$HConnectionImplementation: Removed all
> cached region locations that map to
> dn29.manage.com,60020,1407600154728
> 2014-08-10 12:22:06,173 DEBUG [main]
> client.HConnectionManager$HConnectionImplementation: Removed
> dn29.manage.com:60020 as a location of
>
> m_data,2fd811c2b1d7476efb16499ccb2b823d,1406512331699.12c9a609765ad0bbd6468d93368f860a.
> for tableName=m_data from cache
> 2014-08-10 12:22:07,180 DEBUG [main]
> client.HConnectionManager$HConnectionImplementation: Removed
> dn29.manage.com:60020 as a location of
>
> m_data,2fd811c2b1d7476efb16499ccb2b823d,1406512331699.12c9a609765ad0bbd6468d93368f860a.
> for tableName=m_data from cache
> 2014-08-10 12:22:09,193 DEBUG [main]
> client.HConnectionManager$HConnectionImplementation: Removed
> dn29.manage.com:60020 as a location of
>
> m_data,2fd811c2b1d7476efb16499ccb2b823d,1406512331699.12c9a609765ad0bbd6468d93368f860a.
> for tableName=m_data from cache
> 2014-08-10 12:22:09,196 DEBUG [main]
> client.HConnectionManager$HConnectionImplementation: Removed all
> cached region locations that map to
> dn29.manage.com,60020,1407600154728
> 2014-08-10 12:22:13,208 DEBUG [main]
> client.HConnectionManager$HConnectionImplementation: Removed all
> cached region locations that map to
> dn29.manage.com,60020,1407600154728
>
> I am seeing the following in the hbase master also
>
> 2014-08-10 10:22:25,016 INFO
> [master02.manage.com,60000,1407690402682.splitLogManagerTimeoutMonitor]
> master.SplitLogManager: total tasks = 1 unassigned = 0
> tasks={/hbase-unsecure/splitWAL/WALs%2Fdn29.manage.com
> %2C60020%2C1407600154728-splitting%2Fdn29.manage.com
> %252C60020%252C1407600154728.1407621759364=last_update
> = 1407690428226 last_version = 53 cur_worker_name =
> dn21.manage.com,60020,1407650188526 status = in_progress incarnation =
> 3 resubmits = 3 batch = installed = 1 done = 0 error = 0}
>
> I wonder if I can just rmr stuff under /hbase-unsecure/splitWAL/...
>
> thanks
> thomas
>

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