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Posted to dev@pig.apache.org by "Joseph Adler (JIRA)" <ji...@apache.org> on 2011/09/06 20:27:10 UTC

[jira] [Created] (PIG-2266) bug with input file joining optimization in Pig

bug with input file joining optimization in Pig
-----------------------------------------------

                 Key: PIG-2266
                 URL: https://issues.apache.org/jira/browse/PIG-2266
             Project: Pig
          Issue Type: Bug
          Components: impl
    Affects Versions: 0.9.0
            Reporter: Joseph Adler


In src/org/apache/pig/backend/hadoop/executionengine/mapReduceLayer/MRCompiler.java, the function hasTooManyInputFiles instantiated a LoadFunc instance, then calls setLocation before calling setUDFContextSignature. This is inconsistent with the documentation for the LoadFunc interface (see http://pig.apache.org/docs/r0.9.0/api/org/apache/pig/LoadFunc.html#setUDFContextSignature(java.lang.String)). (We've written UDFs that assume that setUDFContextSignature is called first.)

I think you can fix this by adding 

   loader.setUDFContextSignature(ld.getSignature());

Before

   loader.setLocation(location, job);

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[jira] [Commented] (PIG-2266) bug with input file joining optimization in Pig

Posted by "Daniel Dai (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/PIG-2266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13098275#comment-13098275 ] 

Daniel Dai commented on PIG-2266:
---------------------------------

That seems reasonable. Can you wrap up a patch?

> bug with input file joining optimization in Pig
> -----------------------------------------------
>
>                 Key: PIG-2266
>                 URL: https://issues.apache.org/jira/browse/PIG-2266
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: 0.9.0
>            Reporter: Joseph Adler
>
> In src/org/apache/pig/backend/hadoop/executionengine/mapReduceLayer/MRCompiler.java, the function hasTooManyInputFiles instantiated a LoadFunc instance, then calls setLocation before calling setUDFContextSignature. This is inconsistent with the documentation for the LoadFunc interface (see http://pig.apache.org/docs/r0.9.0/api/org/apache/pig/LoadFunc.html#setUDFContextSignature(java.lang.String)). (We've written UDFs that assume that setUDFContextSignature is called first.)
> I think you can fix this by adding 
>    loader.setUDFContextSignature(ld.getSignature());
> Before
>    loader.setLocation(location, job);

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[jira] [Commented] (PIG-2266) bug with input file joining optimization in Pig

Posted by "Joseph Adler (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/PIG-2266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13098408#comment-13098408 ] 

Joseph Adler commented on PIG-2266:
-----------------------------------

Index: MRCompiler.java
===================================================================
--- MRCompiler.java	(revision 1165764)
+++ MRCompiler.java	(working copy)
@@ -1353,7 +1353,8 @@
                             .instantiateFuncFromSpec(ld.getLFile()
                                     .getFuncSpec());
                             Job job = new Job(conf);
-                            loader.setLocation(location, job);
+                            loader.setUDFContextSignature(ld.getSignature()); 
+			    loader.setLocation(location, job);
                             InputFormat inf = loader.getInputFormat();
                             List<InputSplit> splits = inf.getSplits(HadoopShims.cloneJobContext(job));
                             List<List<InputSplit>> results = MapRedUtil


> bug with input file joining optimization in Pig
> -----------------------------------------------
>
>                 Key: PIG-2266
>                 URL: https://issues.apache.org/jira/browse/PIG-2266
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: 0.9.0
>            Reporter: Joseph Adler
>
> In src/org/apache/pig/backend/hadoop/executionengine/mapReduceLayer/MRCompiler.java, the function hasTooManyInputFiles instantiated a LoadFunc instance, then calls setLocation before calling setUDFContextSignature. This is inconsistent with the documentation for the LoadFunc interface (see http://pig.apache.org/docs/r0.9.0/api/org/apache/pig/LoadFunc.html#setUDFContextSignature(java.lang.String)). (We've written UDFs that assume that setUDFContextSignature is called first.)
> I think you can fix this by adding 
>    loader.setUDFContextSignature(ld.getSignature());
> Before
>    loader.setLocation(location, job);

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[jira] [Updated] (PIG-2266) bug with input file joining optimization in Pig

Posted by "Russell Jurney (Updated) (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/PIG-2266?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Russell Jurney updated PIG-2266:
--------------------------------

    Affects Version/s: 0.10
    
> bug with input file joining optimization in Pig
> -----------------------------------------------
>
>                 Key: PIG-2266
>                 URL: https://issues.apache.org/jira/browse/PIG-2266
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: 0.9.0, 0.10
>            Reporter: Joseph Adler
>
> In src/org/apache/pig/backend/hadoop/executionengine/mapReduceLayer/MRCompiler.java, the function hasTooManyInputFiles instantiated a LoadFunc instance, then calls setLocation before calling setUDFContextSignature. This is inconsistent with the documentation for the LoadFunc interface (see http://pig.apache.org/docs/r0.9.0/api/org/apache/pig/LoadFunc.html#setUDFContextSignature(java.lang.String)). (We've written UDFs that assume that setUDFContextSignature is called first.)
> I think you can fix this by adding 
>    loader.setUDFContextSignature(ld.getSignature());
> Before
>    loader.setLocation(location, job);

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