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https://issues.apache.org/jira/browse/ACCUMULO-2261?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Eric Newton resolved ACCUMULO-2261.
-----------------------------------
Resolution: Fixed
> duplicate locations
> -------------------
>
> Key: ACCUMULO-2261
> URL: https://issues.apache.org/jira/browse/ACCUMULO-2261
> Project: Accumulo
> Issue Type: Bug
> Components: master, tserver
> Affects Versions: 1.5.0
> Environment: hadoop 2.2.0 and zookeeper 3.4.5
> Reporter: Eric Newton
> Assignee: Eric Newton
> Fix For: 1.5.1, 1.6.0
>
>
> Anthony F reports the following:
> bq. I have observed a loss of data when tservers fail during bulk ingest.
> The keys that are missing are right around the table's splits indicating that
> data was lost when a tserver died during a split. I am using Accumulo 1.5.0.
> At around the same time, I observe the master logging a message about "Found
> two locations for the same extent".
> And:
> bq. I'm currently digging through the logs and will report back. Keep in
> mind, I'm using Accumulo 1.5.0 on a Hadoop 2.2.0 stack. To determine data
> loss, I have a 'ConsistencyCheckingIterator' that verifies each row has the
> expected data (it takes a long time to scan the whole table). Below is a
> quick summary of what happened. The tablet in question is "d;72~gcm~201304".
> Notice that it is assigned to 192.168.2.233:9997[343bc1fa155242c] at
> 2014-01-25 09:49:36,233. At 2014-01-25 09:49:54,141, the tserver goes away.
> Then, the tablet gets assigned to 192.168.2.223:9997[143bc1f14412432] and
> shortly after that, I see the BadLocationStateException. The master never
> recovers from the BLSE - I have to manually delete one of the offending
> locations.
> {noformat}
> 2014-01-25 09:49:36,233 [master.Master] DEBUG: Normal Tablets assigning
> tablet d;72~gcm~201304;72=192.168.2.233:9997[343bc1fa155242c]
> 2014-01-25 09:49:36,233 [master.Master] DEBUG: Normal Tablets assigning
> tablet p;18~thm~2012101;18=192.168.2.233:9997[343bc1fa155242c]
> 2014-01-25 09:49:54,141 [master.Master] WARN : Lost servers
> [192.168.2.233:9997[343bc1fa155242c]]
> 2014-01-25 09:49:56,866 [master.Master] DEBUG: 42 assigned to dead servers:
> [d;03~u36~201302;03~thm~2012091@(null,192.168.2.233:9997[343bc1fa155242c],null),
>
> d;06~u36~2013;06~thm~2012083@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;25;24~u36~2013@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;25~u36~201303;25~thm~201209@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;27~gcm~2013041;27@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;30~u36~2013031;30~thm~2012082@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;34~thm;34~gcm~2013022@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;39~thm~20121;39~gcm~20130418@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;41~thm;41~gcm~2013041@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;42~u36~201304;42~thm~20121@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;45~thm~201208;45~gcm~201303@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;48~gcm~2013052;48@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;60~u36~2013021;60~thm~20121@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;68~gcm~2013041;68@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;72;71~u36~2013@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;72~gcm~201304;72@(192.168.2.233:9997[343bc1fa155242c],null,null),
> d;75~thm~2012101;75~gcm~2013032@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;78;77~u36~201305@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;90~u36~2013032;90~thm~2012092@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;91~thm;91~gcm~201304@(null,192.168.2.233:9997[343bc1fa155242c],null),
> d;93~u36~2013012;93~thm~20121@(null,192.168.2.233:9997[343bc1fa155242c],null),
> m;20;19@(null,192.168.2.233:9997[343bc1fa155242c],null),
> m;38;37@(null,192.168.2.233:9997[343bc1fa155242c],null),
> m;51;50@(null,192.168.2.233:9997[343bc1fa155242c],null),
> m;60;59@(null,192.168.2.233:9997[343bc1fa155242c],null),
> m;92;91@(null,192.168.2.233:9997[343bc1fa155242c],null),
> o;01<@(null,192.168.2.233:9997[343bc1fa155242c],null),
> o;04;03@(null,192.168.2.233:9997[343bc1fa155242c],null),
> o;50;49@(null,192.168.2.233:9997[343bc1fa155242c],null),
> o;63;62@(null,192.168.2.233:9997[343bc1fa155242c],null),
> o;74;73@(null,192.168.2.233:9997[343bc1fa155242c],null),
> o;97;96@(null,192.168.2.233:9997[343bc1fa155242c],null),
> p;08~thm~20121;08@(null,192.168.2.233:9997[343bc1fa155242c],null),
> p;09~thm~20121;09@(null,192.168.2.233:9997[343bc1fa155242c],null),
> p;10;09~thm~20121@(null,192.168.2.233:9997[343bc1fa155242c],null),
> p;18~thm~2012101;18@(192.168.2.233:9997[343bc1fa155242c],null,null),
> p;21;20~thm~201209@(null,192.168.2.233:9997[343bc1fa155242c],null),
> p;22~thm~2012091;22@(null,192.168.2.233:9997[343bc1fa155242c],null),
> p;23;22~thm~2012091@(null,192.168.2.233:9997[343bc1fa155242c],null),
> p;41~thm~2012111;41@(null,192.168.2.233:9997[343bc1fa155242c],null),
> p;42;41~thm~2012111@(null,192.168.2.233:9997[343bc1fa155242c],null),
> p;58~thm~201208;58@(null,192.168.2.233:9997[343bc1fa155242c],null)]...
> 2014-01-25 09:49:59,706 [master.Master] DEBUG: Normal Tablets assigning
> tablet d;72~gcm~201304;72=192.168.2.223:9997[143bc1f14412432]
> 2014-01-25 09:50:13,515 [master.EventCoordinator] INFO : tablet
> d;72~gcm~201304;72 was loaded on 192.168.2.223:9997
> 2014-01-25 09:51:20,058 [state.MetaDataTableScanner] ERROR:
> java.lang.RuntimeException:
> org.apache.accumulo.server.master.state.TabletLocationState$BadLocationStateException:
> found two locations for the same extent d;72~gcm~201304:
> 192.168.2.223:9997[143bc1f14412432] and 192.168.2.233:9997[343bc1fa155242c]
> java.lang.RuntimeException:
> org.apache.accumulo.server.master.state.TabletLocationState$BadLocationStateException:
> found two locations for the same extent d;72~gcm~201304:
> 192.168.2.223:9997[143bc1f14412432] and 192.168.2.233:9997[343bc1fa155242c]
> {noformat}
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