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Zhihong Ted Yu commented on HBASE-6461: --------------------------------------- So by 2012-07-27 00:39:45,094 , java processes on 10.4.6.38 had been dead ? For how long ? > Killing the HRegionServer and DataNode hosting ROOT can result in a malformed > root table. > ----------------------------------------------------------------------------------------- > > Key: HBASE-6461 > URL: https://issues.apache.org/jira/browse/HBASE-6461 > Project: HBase > Issue Type: Bug > Environment: hadoop-0.20.2-cdh3u3 > HBase 0.94.1 RC1 > Reporter: Elliott Clark > Priority: Critical > Fix For: 0.94.2 > > > Spun up a new dfs on hadoop-0.20.2-cdh3u3 > Started hbase > started running loadtest tool. > killed rs and dn holding root with killall -9 java on server sv4r27s44 at > about 2012-07-25 22:40:00 > After things stabilize Root is in a bad state. Ran hbck and got: > Exception in thread "main" > org.apache.hadoop.hbase.client.NoServerForRegionException: No server address > listed in -ROOT- for region .META.,,1.1028785192 containing row > at > org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:1016) > at > org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:841) > at > org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:810) > at org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:232) > at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:172) > at org.apache.hadoop.hbase.util.HBaseFsck.connect(HBaseFsck.java:241) > at org.apache.hadoop.hbase.util.HBaseFsck.main(HBaseFsck.java:3236) > hbase(main):001:0> scan '-ROOT-' > ROW COLUMN+CELL > > > 12/07/25 22:43:18 INFO security.UserGroupInformation: JAAS Configuration > already set up for Hadoop, not re-installing. > .META.,,1 column=info:regioninfo, > timestamp=1343255838525, value={NAME => '.META.,,1', STARTKEY => '', ENDKEY > => '', ENCODED => 1028785192,} > .META.,,1 column=info:v, > timestamp=1343255838525, value=\x00\x00 > > 1 row(s) in 0.5930 seconds > Here's the master log: https://gist.github.com/3179194 > I tried the same thing with 0.92.1 and I was able to get into a similar > situation, so I don't think this is anything new. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira