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https://issues.apache.org/jira/browse/HBASE-616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12650076#action_12650076
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stack commented on HBASE-616:
-----------------------------
Here's log excerpt:
{code}
2008-11-22 17:12:42,426 INFO org.apache.hadoop.hbase.regionserver.HLog: New log
writer created at
/hbase/log_XX.XX.249.103_1227396990675_60020/hlog.dat.1227402762424
2008-11-22 17:47:47,792 WARN org.apache.hadoop.hbase.util.Sleeper: We slept
193824ms, ten times longer than scheduled: 3000
2008-11-22 17:47:47,792 WARN org.apache.hadoop.hbase.util.Sleeper: We slept
193115ms, ten times longer than scheduled: 10000
2008-11-22 17:47:48,113 WARN
org.apache.hadoop.hbase.regionserver.HRegionServer: unable to report to master
for 194203 milliseconds - retrying
2008-11-22 17:47:48,395 INFO
org.apache.hadoop.hbase.regionserver.HRegionServer: MSG_CALL_SERVER_STARTUP
{code}
When it finally checks in, master tells it restart: MSG_CALL_SERVER_STARTUP.
> " We slept XXXXXX ms, ten times longer than scheduled: 3000" happens
> frequently.
> --------------------------------------------------------------------------------
>
> Key: HBASE-616
> URL: https://issues.apache.org/jira/browse/HBASE-616
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
>
> Just saw the below in a log... all in a row on the one server.
> {code}
> 4493 2008-05-05 18:08:17,512 WARN org.apache.hadoop.hbase.util.Sleeper: We
> slept 34557ms, ten times longer than scheduled: 3000
> 4494 2008-05-05 18:11:08,879 WARN org.apache.hadoop.hbase.util.Sleeper: We
> slept 30576ms, ten times longer than scheduled: 3000
> 4495 2008-05-05 18:30:45,056 WARN org.apache.hadoop.hbase.util.Sleeper: We
> slept 1091720ms, ten times longer than scheduled: 3000
> 4496 2008-05-05 18:30:45,056 WARN org.apache.hadoop.hbase.util.Sleeper: We
> slept 1094209ms, ten times longer than scheduled: 10000
> 4497 2008-05-05 18:30:45,429 FATAL org.apache.hadoop.hbase.HRegionServer:
> unable to report to master for 1092093 milliseconds - aborting server
> {code}
> We're seeing these kinda outages pretty frequently. In the case above, it
> was small cluster that was using TableReduce to insert. The MR, HDFS and
> HBase were all running on same nodes.
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