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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-508) regionserver stuck log rolling and doing nothing else
Date Thu, 13 Mar 2008 07:29:46 GMT

     [ https://issues.apache.org/jira/browse/HBASE-508?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack updated HBASE-508:
------------------------

    Attachment: td.log

Thread dump shows all threads present and not deadlocked.

Why would we not be scheduling flushes and compactions?

This server will probably keep going and then OOME.

> regionserver stuck log rolling and doing nothing else
> -----------------------------------------------------
>
>                 Key: HBASE-508
>                 URL: https://issues.apache.org/jira/browse/HBASE-508
>             Project: Hadoop HBase
>          Issue Type: Bug
>            Reporter: stack
>         Attachments: td.log
>
>
> When I look in the log of XX.XX.XX.92, it shows only log rolling activity of following
form:
> {code}
> ...
> 2008-03-13 07:04:17,596 DEBUG org.apache.hadoop.hbase.HLog: Closing current log writer
hdfs://coral-dfs.cluster.powerset.com:10000/hbase/XX.XX.XX-2.u.powerset.com/log_XX.XX.XX.92_1205384328364_60020/hlog.dat.022
to get a new one
> 2008-03-13 07:04:17,599 INFO org.apache.hadoop.hbase.HLog: new log writer created at
hdfs://coral-dfs.cluster.powerset.com:10000/hbase/XX.XX.XX-2.u.powerset.com/log_XX.XX.XX.92_1205384328364_60020/hlog.dat.023
> 2008-03-13 07:08:48,425 INFO org.apache.hadoop.hbase.HRegionServer: Rolling hlog. Number
of entries: 30004
> 2008-03-13 07:08:48,472 DEBUG org.apache.hadoop.hbase.HLog: Closing current log writer
hdfs://coral-dfs.cluster.powerset.com:10000/hbase/XX.XX.XX-2.u.powerset.com/log_XX.XX.XX.92_1205384328364_60020/hlog.dat.023
to get a new one
> 2008-03-13 07:08:48,484 INFO org.apache.hadoop.hbase.HLog: new log writer created at
hdfs://coral-dfs.cluster.powerset.com:10000/hbase/XX.XX.XX-2.u.powerset.com/log_XX.XX.XX.92_1205384328364_60020/hlog.dat.024
> ~        
> ...                                                                                 
                                                                                         
                               
> {code}
> .. which is odd because if we're taking on this many edits, you'd think there'd be flushing
and compacting going on.  There's none.

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