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From "John Vines (JIRA)" <j...@apache.org>
Subject [jira] [Reopened] (ACCUMULO-2361) droptable created infinite METADATA scan loop
Date Thu, 26 Jun 2014 20:37:27 GMT

     [ https://issues.apache.org/jira/browse/ACCUMULO-2361?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

John Vines reopened ACCUMULO-2361:
----------------------------------


Reopening because there are no commits against this ticket where this could have been addressed,
nor an explanation for it being addressed.

> droptable created infinite METADATA scan loop
> ---------------------------------------------
>
>                 Key: ACCUMULO-2361
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-2361
>             Project: Accumulo
>          Issue Type: Bug
>    Affects Versions: 1.5.1
>         Environment: accumulo-1.5.0 with sqrrl extensions.
>            Reporter: Chris McCubbin
>            Priority: Critical
>             Fix For: 1.5.2, 1.6.1, 1.7.0
>
>         Attachments: AccumuloHammerTableCreation.java, AccumuloHammerTableCreation.java,
Screen Shot 2014-02-12 at 2.27.11 PM.png, Screen Shot 2014-02-12 at 2.28.09 PM.png, TableCreationHammerIT.java,
jstack1.txt, jstack2.txt, jstack3.txt, masterJstack.txt, masterJstack2.txt, masterJstack3.txt,
short.debug.log
>
>
> Working with [~vines] on this one...
> Setup: Created a couple tables, added some data, then dropped them. The drop hangs and
!METADATA (which has ~400 entries) is scanned in what looks like an infinite loop.
> The table being dropped loks like this in !METADATA:
> {code}
> root@sqrrl> scan -b 3 -e 5 -t !METADATA
> 4;\x00\x00\x06f srv:dir []    /t-00000b6
> 4;\x00\x00\x06f srv:lock []    tservers/10.10.1.209:9997/zlock-0000000000$144274cd317000b
> 4;\x00\x00\x06f srv:time []    M0
> 4;\x00\x00\x06f ~tab:~pr []    \x00
> 4;\x00\x00\x0C\xCC loc:144274cd3170008 []    10.10.1.107:9997
> 4;\x00\x00\x0C\xCC srv:dir []    /t-00000bj
> 4;\x00\x00\x0C\xCC srv:lock []    tservers/10.10.1.209:9997/zlock-0000000000$144274cd317000b
> 4;\x00\x00\x0C\xCC srv:time []    M0
> 4;\x00\x00\x0C\xCC ~tab:~pr []    \x01\x00\x00\x06f
> 4;\x00\x00\x133 srv:dir []    /t-000002h
> 4;\x00\x00\x133 srv:lock []    tservers/10.10.1.209:9997/zlock-0000000000$144274cd317000b
> 4;\x00\x00\x133 srv:time []    M0
> 4;\x00\x00\x133 ~tab:~pr []    \x01\x00\x00\x0C\xCC
> {code}
> We think this may be the relevant message in the master debug logs:
> {code}
> 2014-02-12 19:13:31,397 [tableOps.CleanUp] DEBUG: Still waiting for table to be deleted:
4 saw inconsistencynull 4;^@^@^L?;^@^@^Ff
> 2014-02-12 19:13:31,459 [tableOps.CleanUp] DEBUG: Still waiting for table to be deleted:
4 saw inconsistencynull 4;^@^@^L?;^@^@^Ff
> 2014-02-12 19:13:31,524 [tableOps.CleanUp] DEBUG: Still waiting for table to be deleted:
4 saw inconsistencynull 4;^@^@^L?;^@^@^Ff
> 2014-02-12 19:13:31,588 [tableOps.CleanUp] DEBUG: Still waiting for table to be deleted:
4 saw inconsistencynull 4;^@^@^L?;^@^@^Ff
> 2014-02-12 19:13:31,662 [tableOps.CleanUp] DEBUG: Still waiting for table to be deleted:
4 saw inconsistencynull 4;^@^@^L?;^@^@^Ff
> 2014-02-12 19:13:31,725 [tableOps.CleanUp] DEBUG: Still waiting for table to be deleted:
4 saw inconsistencynull 4;^@^@^L?;^@^@^Ff
> 2014-02-12 19:13:31,788 [tableOps.CleanUp] DEBUG: Still waiting for table to be deleted:
4 saw inconsistencynull 4;^@^@^L?;^@^@^Ff
> 2014-02-12 19:13:31,854 [tableOps.CleanUp] DEBUG: Still waiting for table to be deleted:
4 saw inconsistencynull 4;^@^@^L?;^@^@^Ff
> 2014-02-12 19:13:31,917 [tableOps.CleanUp] DEBUG: Still waiting for table to be deleted:
4 saw inconsistencynull 4;^@^@^L?;^@^@^Ff
> ...etc
> {code}
> Graceful accumulo reboot hangs. 
> Hard reboot of everything (control-c'd) clears the problem.



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