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From "T Jake Luciani (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-3150) ColumnFormatRecordReader loops forever (StorageService.getSplits(..) out of whack)
Date Mon, 26 Sep 2011 14:43:28 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13114702#comment-13114702
] 

T Jake Luciani commented on CASSANDRA-3150:
-------------------------------------------

bq. The problematic split ends up being ...

So you are saying that split keeps getting called over and over? I dont see that in the log
or does it hang?

> ColumnFormatRecordReader loops forever (StorageService.getSplits(..) out of whack)
> ----------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-3150
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3150
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Hadoop
>    Affects Versions: 0.8.4, 0.8.5
>            Reporter: Mck SembWever
>            Assignee: Mck SembWever
>            Priority: Critical
>             Fix For: 0.8.6
>
>         Attachments: CASSANDRA-3150.patch, Screenshot-Counters for task_201109212019_1060_m_000029
- Mozilla Firefox.png, Screenshot-Hadoop map task list for job_201109212019_1060 on cassandra01
- Mozilla Firefox.png, attempt_201109071357_0044_m_003040_0.grep-get_range_slices.log, fullscan-example1.log
>
>
> From http://thread.gmane.org/gmane.comp.db.cassandra.user/20039
> {quote}
> bq. Cassandra-0.8.4 w/ ByteOrderedPartitioner
> bq. CFIF's inputSplitSize=196608
> bq. 3 map tasks (from 4013) is still running after read 25 million rows.
> bq. Can this be a bug in StorageService.getSplits(..) ?
> getSplits looks pretty foolproof to me but I guess we'd need to add
> more debug logging to rule out a bug there for sure.
> I guess the main alternative would be a bug in the recordreader paging.
> {quote}

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