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From "Samarth Gahire (Commented) (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-3740) While using BulkOutputFormat unneccessarily look for the cassandra.yaml file.
Date Sat, 14 Jan 2012 09:04:39 GMT


Samarth Gahire commented on CASSANDRA-3740:

I have checked into the code and I can see following issues:
 1) "org.apache.cassandra.config.Config" do not initialize the all the properties and which
results into the null pointer exception in a static block of class "DatabaseDescriptor" for
example "conf.commitlog_sync"

 2) I cant see any method in ConfigHelper to specify that I am using "Supercolumn" and clustername(dont
know if cluster name is really needed)

 3) Also there is no method to specify comparator and subcomparator in ConfigHelper and it
seems like comparators have been hard coded to "BytesType"

> 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
> 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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