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From "Mck SembWever (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Edited] (CASSANDRA-2388) ColumnFamilyRecordReader fails for a given split because a host is down, even if records could reasonably be read from other replica.
Date Wed, 08 Jun 2011 06:05:00 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-2388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13045620#comment-13045620
] 

Mck SembWever edited comment on CASSANDRA-2388 at 6/8/11 6:04 AM:
------------------------------------------------------------------

Initial attempt at solution. Although I'm a little apprehensive to the additions to cassandra.thrift
(describe_rack(..) isn't used anywhere, it just made sense to add describe_datacenter(..)
and describe_rack(..) at the same time).

I've tested that existing hadoop jobs work but the new functionality hasn't been tested (as
i currently don't have any RF=2 data setup).

This patch does not include the required re-generated Cassandra.java

      was (Author: michaelsembwever):
    Initial attempt at solution. Although I'm a little apprehensive to the additions to cassandra.thrift
(and describe_rack isn't used anywhere, it just made sense to add describe_datacenter(..)
and describe_rack(..) at the same time).

I've tested that existing hadoop jobs work but the new functionality hasn't been tested (as
i currently don't have any RF=2 data setup).

This patch does not include the required re-generated Cassandra.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: 0.8.1
>
>         Attachments: 0002_On_TException_try_next_split.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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