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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8482) TestHBaseFsck#testCheckTableLocks broke; java.lang.AssertionError: expected:<[]> but was:<[EXPIRED_TABLE_LOCK]>
Date Thu, 02 May 2013 19:12:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13647818#comment-13647818
] 

stack commented on HBASE-8482:
------------------------------

[~anoop.hbase] [~nkeywal] is the one who knows best how we should use environmentedge.  It
looks like the incrementing environment edge will never work while chore sort of uses it rather
than fully uses it (the backing sleeper class is not using it so we'd never sleep).
                
> TestHBaseFsck#testCheckTableLocks broke; java.lang.AssertionError: expected:<[]>
but was:<[EXPIRED_TABLE_LOCK]>
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-8482
>                 URL: https://issues.apache.org/jira/browse/HBASE-8482
>             Project: HBase
>          Issue Type: Bug
>            Reporter: stack
>            Assignee: stack
>            Priority: Critical
>             Fix For: 0.95.1
>
>         Attachments: 8482.txt
>
>
> I've been looking into this test failure because I thought it particular to my rpc hackery.
> What I see is like the subject:
> {code}
> java.lang.AssertionError: expected:<[]> but was:<[EXPIRED_TABLE_LOCK]>
> {code}
> and later in same unit test:
> {code}
> java.lang.AssertionError: expected:<[EXPIRED_TABLE_LOCK]> but was:<[EXPIRED_TABLE_LOCK,
EXPIRED_TABLE_LOCK]>
> {code}
> The test creates a write lock and then expires it.  In subject failure, we are expiring
the lock ahead of the time it should be.  Easier for me to reproduce is that the second write
lock we put in place is not allowed to happen because of the presence of the first lock EVEN
THOUGH IT HAS BEEN JUDGED EXPIRED:
> {code}
> ERROR: Table lock acquire attempt found:[tableName=foo, lockOwner=localhost,60000,1,
threadId=387, purpose=testCheckTableLocks, isShared=false, createTime=129898749]
> 2013-05-02 00:34:42,715 INFO  [Thread-183] lock.ZKInterProcessLockBase(431): Lock is
held by: write-testing utility0000000000
> ERROR: Table lock acquire attempt found:[tableName=foo, lockOwner=localhost,60000,1,
threadId=349, purpose=testCheckTableLocks, isShared=false, createTime=28506852]
> {code}
> Above, you see the expired lock and then our hbck lock visitor has it that the second
lock is expired because it is held by the first lock.
> I can keep looking at this but input would be appreciated.
> It failed in recent trunk build https://builds.apache.org/view/H-L/view/HBase/job/HBase-TRUNK/4090/testReport/junit/org.apache.hadoop.hbase.util/TestHBaseFsck/testCheckTableLocks/

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