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From "Niel Drummond (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-4466) ColumnFamilyRecordReader hadoop integration fails with ghost keys
Date Mon, 30 Jul 2012 08:36:34 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13424753#comment-13424753
] 

Niel Drummond commented on CASSANDRA-4466:
------------------------------------------

Ah ok, thanks for the input. What's the best approach to solving this ?
                
> ColumnFamilyRecordReader hadoop integration fails with ghost keys
> -----------------------------------------------------------------
>
>                 Key: CASSANDRA-4466
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4466
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Hadoop
>    Affects Versions: 1.1.2
>            Reporter: Niel Drummond
>            Priority: Minor
>             Fix For: 1.1.4
>
>         Attachments: 4466-stack, 4466-v0.patch
>
>
> When running hadoop-cassandra jobs with range queries over ghost keys, the ColumnFamilyRecordReader
throws an exception if the last key in a slice_range query is a ghost key. 
> This seems to be related to changes made in #2855 ( https://issues.apache.org/jira/browse/CASSANDRA-2855
), to prevent ghost keys appearing in a hadoop map. 
> The call stack trace is attached.
> I made a one-line change to ColumnFamilyRecordReader.java, which seems to solve this
issue for us.

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