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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-2994) RS loops forever trying to get the startcode if it's session expired
Date Tue, 14 Sep 2010 17:30:32 GMT
RS loops forever trying to get the startcode if it's session expired
--------------------------------------------------------------------

                 Key: HBASE-2994
                 URL: https://issues.apache.org/jira/browse/HBASE-2994
             Project: HBase
          Issue Type: Bug
    Affects Versions: 0.89.20100621, 0.20.6
            Reporter: Jean-Daniel Cryans
             Fix For: 0.20.7


mr_luk on IRC got this, but we still don't know how the session was expired because the log
is mangled for about 13 minutes, then he sees an infinite stream of:

{noformat}
2010-09-07 17:30:06,467 WARN org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper: Failed to
create /hbase/rs -- check quorum servers, currently=foo1:2181,foo2:2181,foo3:2181
2010-09-07 17:30:06,467 DEBUG org.apache.hadoop.hbase.regionserver.HRegionServer: Start code
already taken, trying another one
2010-09-07 17:30:06,467 WARN org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper: Failed to
create /hbase/rs/1283873406467 znode in ZooKeeper: 
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired
for /hbase/rs/1283873406467
        at java.lang.Thread.run(Unknown Source)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:434)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.reportForDuty(HRegionServer.java:1338)
        at org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper.writeRSLocation(ZooKeeperWrapper.java:586)
        at org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper.ensureExists(ZooKeeperWrapper.java:405)
        at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:808)
        at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:780)
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:42)
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:118)
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired
for /hbase/rs
{noformat}

Tagging for 0.20.7 since that stuff is got reworked in trunk.

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