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https://issues.apache.org/jira/browse/PIG-925?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12744628#action_12744628
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Pradeep Kamath commented on PIG-925:
------------------------------------
The new unit test has the following comment:
{code}
// Regression test for Pig-800
{code}
Shouldn't the jira number be PIG-925?
Changes look good - it would be good to have some
comments at different parts of the code explaining
how we are translating LOJoin into POCogroup and foreach with flattens on the
bag
I am assuming if the javac issue is fix-able, there will be a new patch with
the fix.
+1 otherwise.
> Fix join in local mode
> ----------------------
>
> Key: PIG-925
> URL: https://issues.apache.org/jira/browse/PIG-925
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: 0.3.0
> Reporter: Daniel Dai
> Assignee: Daniel Dai
> Fix For: 0.4.0
>
> Attachments: PIG-925-1.patch, PIG-925-2.patch, PIG-925-3.patch
>
>
> Join is broken after LOJoin patch (Optimizer_Phase5.patch of
> [PIG-697|https://issues.apache.org/jira/browse/PIG-697). Even the simplest
> join script is not working under local mode:
> eg:
> a = load '1.txt';
> b = load '2.txt';
> c = join a by $0, b by $0;
> dump c;
> Caused by: java.lang.NullPointerException
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POPackage.getNext(POPackage.java:206)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.processInput(PhysicalOperator.java:231)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNext(POForEach.java:191)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.processInput(PhysicalOperator.java:231)
> at
> org.apache.pig.backend.local.executionengine.physicalLayer.counters.POCounter.getNext(POCounter.java:71)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.processInput(PhysicalOperator.java:231)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POStore.getNext(POStore.java:117)
> at
> org.apache.pig.backend.local.executionengine.LocalPigLauncher.runPipeline(LocalPigLauncher.java:146)
> at
> org.apache.pig.backend.local.executionengine.LocalPigLauncher.launchPig(LocalPigLauncher.java:109)
> at
> org.apache.pig.backend.local.executionengine.LocalExecutionEngine.execute(LocalExecutionEngine.java:165)
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