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https://issues.apache.org/jira/browse/PIG-32?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12565303#action_12565303
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Craig Macdonald commented on PIG-32:
------------------------------------
Hello,
the PIG-32 commit (r617338) broke local execution:
{{{
java.lang.ClassCastException:
org.apache.pig.backend.local.executionengine.LocalExecutionEngine cannot be
cast to org.apache.pig.backend.hadoop.executionengine.HExecutionEngine
at org.apache.pig.tools.grunt.GruntParser.setParams(GruntParser.java:93)
at org.apache.pig.tools.grunt.Grunt.<init>(Grunt.java:42)
at org.apache.pig.Main.main(Main.java:245)
}}}
The relevant code from GruntParser is:
{{{
// TODO: this violates the abstraction layer decoupling between
// front end and back end and needs to be changed.
// Right now I am not clear on how the Job Id comes from to tell
// the back end to kill a given job (mJobClient is used only in
// processKill)
//
mJobClient =
((HExecutionEngine)(mPigServer.getPigContext().getExecutionEngine())).getJobClient();
}}}
Thanks
C
> Abstraction Layer to decouple Pig from Back-End
> -----------------------------------------------
>
> Key: PIG-32
> URL: https://issues.apache.org/jira/browse/PIG-32
> Project: Pig
> Issue Type: New Feature
> Components: impl
> Reporter: Antonio Magnaghi
> Assignee: Antonio Magnaghi
> Attachments: 2008.01.29.patch, DataStorage.diff,
> DataStorage20071212.diff, patch.2008.01.16.merge_w_trunk,
> patch.2008.01.23.diff, PATCH.2008.01.31, patch2007_12_26.diff,
> patch2007_12_26_II.diff, patch2007_12_27.diff, PIG-32.jdk1.5.patch, pig.jar,
> pig.jar.2008.01.16, TEST.LOG, TEST.LOGS
>
>
> I'm opening a new issue to track the development work to support an
> abstraction layer for Pig as defined at
> http://wiki.apache.org/pig/PigAbstractionLayer
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