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From "Erik Forsberg (Commented) (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-3740) While using BulkOutputFormat unneccessarily look for the cassandra.yaml file.
Date Thu, 02 Feb 2012 13:47:53 GMT


Erik Forsberg commented on CASSANDRA-3740:

>Actually we are experiencing the problem while loading the data where it fails to connect
if the host the M/R job is running on is dualstack, i.e. has both IPv4 >and IPv6. 
>Also it works when cassandra.yaml is provided ,may be it is reading listen address or
something from cassandra.yaml.

Described this problem in more detail in CASSANDRA-3839.
> While using BulkOutputFormat  unneccessarily look for the cassandra.yaml file.
> ------------------------------------------------------------------------------
>                 Key: CASSANDRA-3740
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Hadoop
>    Affects Versions: 1.1
>            Reporter: Samarth Gahire
>            Assignee: Brandon Williams
>              Labels: cassandra, hadoop, mapreduce
>             Fix For: 1.1
>         Attachments: 0001-Make-DD-the-canonical-partitioner-source.txt, 0002-Prevent-loading-from-yaml.txt,
0003-use-output-partitioner.txt, 0004-update-BOF-for-new-dir-layout.txt
> I am trying to use BulkOutputFormat to stream the data from map of Hadoop job. I have
set the cassandra related configuration using ConfigHelper ,Also have looked into Cassandra
code seems Cassandra has taken care that it should not look for the cassandra.yaml file.
> But still when I run the job i get the following error:
> {
> 12/01/13 11:30:04 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments.
Applications should implement Tool for the same.
> 12/01/13 11:30:04 INFO input.FileInputFormat: Total input paths to process : 1
> 12/01/13 11:30:04 INFO mapred.JobClient: Running job: job_201201130910_0015
> 12/01/13 11:30:05 INFO mapred.JobClient:  map 0% reduce 0%
> 12/01/13 11:30:23 INFO mapred.JobClient: Task Id : attempt_201201130910_0015_m_000000_0,
Status : FAILED
> java.lang.Throwable: Child Error
>         at
> Caused by: Task process exit with nonzero status of 1.
>         at
> attempt_201201130910_0015_m_000000_0: Cannot locate cassandra.yaml
> attempt_201201130910_0015_m_000000_0: Fatal configuration error; unable to start server.
> }
> Also let me know how can i make this cassandra.yaml file available to Hadoop mapreduce

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