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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-3638) If a FS bootstrap, need to also ensure ZK is cleaned
Date Mon, 14 Mar 2011 22:45:31 GMT
If a FS bootstrap, need to also ensure ZK is cleaned
----------------------------------------------------

                 Key: HBASE-3638
                 URL: https://issues.apache.org/jira/browse/HBASE-3638
             Project: HBase
          Issue Type: Bug
            Reporter: stack
            Priority: Minor


In a test environment where a cycle of start, operation, kill hbase (repeat), noticed that
we were doing a bootstrap on startup but then we were picking up the previous cycles zk state.
 It made for a mess in the test.

Last thing seen on previous cycle was:

{code}
2011-03-11 06:33:36,708 DEBUG org.apache.hadoop.hbase.master.AssignmentManager: Handling transition=RS_ZK_REGION_OPENING,
server=X.X.X.60020,1299853933073, region=1028785192/.META.
{code}

Then, in the messed up cycle I saw:

{code}
2011-03-11 06:42:48,530 INFO org.apache.hadoop.hbase.master.MasterFileSystem: BOOTSTRAP: creating
ROOT and first META regions
.....

{code}

Then after setting watcher on .META., we get a 

{code}
2011-03-11 06:42:58,301 INFO org.apache.hadoop.hbase.master.AssignmentManager: Processing
region .META.,,1.1028785192 in state RS_ZK_REGION_OPENED
2011-03-11 06:42:58,302 WARN org.apache.hadoop.hbase.master.AssignmentManager: Region in transition
1028785192 references a server no longer up X.X.X; letting RIT timeout so will be assigned
elsewhere
{code}

We're all confused.

Should at least clear our zk if a bootstrap happened.

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