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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9563) Autorestart doesn't work if zkcleaner fails
Date Mon, 07 Oct 2013 23:12:43 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13788685#comment-13788685
] 

stack commented on HBASE-9563:
------------------------------

Just ran into this.  Looks like this.

{code}
 24 2013-10-07 05:07:00,009 INFO  [main] zookeeper.ZooKeeper: Client environment:java.compiler=<NA>
 23 2013-10-07 05:07:00,009 INFO  [main] zookeeper.ZooKeeper: Client environment:os.name=Linux
 22 2013-10-07 05:07:00,009 INFO  [main] zookeeper.ZooKeeper: Client environment:os.arch=amd64
 21 2013-10-07 05:07:00,009 INFO  [main] zookeeper.ZooKeeper: Client environment:os.version=3.2.0-43-generic
 20 2013-10-07 05:07:00,010 INFO  [main] zookeeper.ZooKeeper: Client environment:user.name=hbase
 19 2013-10-07 05:07:00,010 INFO  [main] zookeeper.ZooKeeper: Client environment:user.home=/home/hbase
 18 2013-10-07 05:07:00,010 INFO  [main] zookeeper.ZooKeeper: Client environment:user.dir=/home/hbase
 17 2013-10-07 05:07:00,011 INFO  [main] zookeeper.ZooKeeper: Initiating client connection,
connectString=a1805.halxg.cloudera.com:2181 sessionTimeout=90000 watcher=clean znode for master
 16 2013-10-07 05:07:00,042 INFO  [main] zookeeper.RecoverableZooKeeper: Process identifier=clean
znode for master connecting to ZooKeeper ensemble=a1805.halxg.cloudera.com:2181
 15 2013-10-07 05:07:00,043 WARN  [main] hbase.ZNodeClearer: Can't read the content of the
znode file
 14 java.io.FileNotFoundException: /tmp/hbase-hbase-master.znode (No such file or directory)
 13 ,...at java.io.FileInputStream.open(Native Method)
 12 ,...at java.io.FileInputStream.<init>(FileInputStream.java:138)
 11 ,...at java.io.FileInputStream.<init>(FileInputStream.java:97)
 10 ,...at java.io.FileReader.<init>(FileReader.java:58)
  9 ,...at org.apache.hadoop.hbase.ZNodeClearer.readMyEphemeralNodeOnDisk(ZNodeClearer.java:95)
  8 ,...at org.apache.hadoop.hbase.ZNodeClearer.clear(ZNodeClearer.java:143)
  7 ,...at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:138)
  6 ,...at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
  5 ,...at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:126)
  4 ,...at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:2787)
  3 2013-10-07 05:07:00,046 INFO  [main-SendThread(a1805.halxg.cloudera.com:2181)] zookeeper.ClientCnxn:
Opening socket connection to server a1805.halxg.cloudera.com/10.20.200.105:2181. Will not
attempt to authenticate using SASL (unknown error)
  2 Mon Oct  7 10:54:01 PDT 2013 Starting master on a1805.halxg.cloudera.com
  1 core file size          (blocks, -c) 0
  0 data seg size           (kbytes, -d) unlimited
  1 scheduling priority             (-e) 0
  2 file size               (blocks, -f) unlimited
  3 pending signals                 (-i) 386225
  4 max locked memory       (kbytes, -l) 64
  5 max memory size         (kbytes, -m) unlimited
{code}


> Autorestart doesn't work if zkcleaner fails
> -------------------------------------------
>
>                 Key: HBASE-9563
>                 URL: https://issues.apache.org/jira/browse/HBASE-9563
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Elliott Clark
>
> I've seen this several times where a master didn't autorestart because zk cleaner failed.
 We should still restart the daemon even if it's not possible to clean the zk nodes.



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