[jira] [Commented] (PIG-2872) StoreFuncInterface.setStoreLocation get's a copy of a Configuration object

["Bill Graham (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PIG-2872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13433199#comment-13433199 ] 

Bill Graham commented on PIG-2872:
----------------------------------

I ran into issues with this as well. See PIG-2870 and the attached patch. Does Wonderdog work if you apply this patch?
                
> StoreFuncInterface.setStoreLocation get's a copy of a Configuration object
> --------------------------------------------------------------------------
>
>                 Key: PIG-2872
>                 URL: https://issues.apache.org/jira/browse/PIG-2872
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: 0.11
>         Environment: Pig trunk, Hadoop 0.20.205 with Kerberos, ElasticSearch trunk, Wonderdog trunk
>            Reporter: Evert Lammerts
>
> When an implementation of StoreFuncInterface.setStoreLocation is called from JobControlCompiler.getJob, it is passed a copy of the Configuration that will be used for the Job that will be submitted:
> {code:title=JobControlCompiler.java}
> sFunc.setStoreLocation(st.getSFile().getFileName(), new org.apache.hadoop.mapreduce.Job(nwJob.getConfiguration()));
> {code}
> When a new org.apache.hadoop.mapreduce.Job is created it creates a copy of the Configuration object, as far as I know. Thus anything added to the Configuration object in the implementation of setStoreLocation will not be included in the Configuration of nwJob in JobControlCompiler.getJob.
> I notice this goes wrong in Wonderdog, which needs to include the Elasticsearch configuration file in the DistributedCache. It is added to mapred.cache.files through setStoreLocation, but this setting doesn't make it back into the Job returned by JobControlCompiler.getJob, and is therefore never localized.
> This might be intentional semantics within Pig, but I'm not familiar enough with StoreFuncs to know whether it is.

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