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https://issues.apache.org/jira/browse/PIG-2266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13098408#comment-13098408
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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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