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From "ryan rawson (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-3487) regionservers w/o a master give up after a while but does so in a silent way that leaves the process hanging in a ugly way
Date Fri, 28 Jan 2011 01:40:44 GMT
regionservers w/o a master give up after a while but does so in a silent way that leaves the
process hanging in a ugly way
--------------------------------------------------------------------------------------------------------------------------

                 Key: HBASE-3487
                 URL: https://issues.apache.org/jira/browse/HBASE-3487
             Project: HBase
          Issue Type: Bug
    Affects Versions: 0.90.0
            Reporter: ryan rawson


while testing I was having problems with my master aborting early on, which causes trouble
with the regionservers... they are SUPPOSED to wait forever for the master to come up, but
they eventually 'give up' without saying anything helpful.  For example this was in the log:

2011-01-27 17:27:25,912 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: No master
found, will retry
2011-01-27 17:27:28,912 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: No master
found, will retry
2011-01-27 17:27:31,912 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: No master
found, will retry
2011-01-27 17:27:34,912 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: No master
found, will retry
2011-01-27 17:27:37,913 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: No master
found, will retry
2011-01-27 17:28:37,593 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: LRU Stats: total=3.26
MB, free=393.42 MB, max=396.68 MB, blocks=1, accesses=69, hits=64, hitRatio=92.75%%, cachingAccesses=65,
cachingHits=64, cachingHitsRatio=98.46%%, evictions=0, evicted=0, evictedPerRun=NaN

then nothing else.  It had been well over 3 minutes at this point.  jstacking the process
shows lots of threads running, but the process is effectively dead and only kill -9 will get
rid of it.

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