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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-2388) ColumnFamilyRecordReader fails for a given split because a host is down, even if records could reasonably be read from other replica.
Date Fri, 24 Jun 2011 16:45:48 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-2388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13054536#comment-13054536
] 

Hudson commented on CASSANDRA-2388:
-----------------------------------

Integrated in Cassandra-0.8 #191 (See [https://builds.apache.org/job/Cassandra-0.8/191/])
    Change ColumnFamilyRecordReader to read split from replicas if primary is down

Patch by Mck SembWever; reviewed by tjake for CASSANDRA-2388

jake : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1139358
Files : 
* /cassandra/branches/cassandra-0.8/interface/thrift/gen-java/org/apache/cassandra/thrift/Cassandra.java
* /cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/hadoop/ConfigHelper.java
* /cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/hadoop/ColumnFamilyInputFormat.java
* /cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/hadoop/ColumnFamilyRecordReader.java
* /cassandra/branches/cassandra-0.8/interface/cassandra.thrift
* /cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/thrift/CassandraServer.java


> ColumnFamilyRecordReader fails for a given split because a host is down, even if records
could reasonably be read from other replica.
> -------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-2388
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2388
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Hadoop
>            Reporter: Eldon Stegall
>            Assignee: Mck SembWever
>              Labels: hadoop, inputformat
>             Fix For: 0.8.2
>
>         Attachments: 0002_On_TException_try_next_split.patch, CASSANDRA-2388.patch, CASSANDRA-2388.patch,
CASSANDRA-2388.patch
>
>
> ColumnFamilyRecordReader only tries the first location for a given split. We should try
multiple locations for a given split.

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