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https://issues.apache.org/jira/browse/PIG-4781?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
liyunzhang_intel updated PIG-4781:
----------------------------------
Assignee: liyunzhang_intel
Status: Patch Available (was: Open)
> Fix remaining unit failure about "TestCollectedGroup" for spark engine
> ----------------------------------------------------------------------
>
> Key: PIG-4781
> URL: https://issues.apache.org/jira/browse/PIG-4781
> Project: Pig
> Issue Type: Sub-task
> Components: spark
> Reporter: liyunzhang_intel
> Assignee: liyunzhang_intel
> Fix For: spark-branch
>
> Attachments: PIG-4781.patch
>
>
> in
> https://builds.apache.org/job/Pig-spark/lastUnsuccessfulBuild/#showFailuresLink,
> it shows that following unit test fails:
> org.apache.pig.test.TestCollectedGroup.testMapsideGroupWithMergeJoin
> This fails because currently we use regular join to implement merge join.
> the exeception is
> {code}
> Caused by:
> org.apache.pig.backend.hadoop.executionengine.spark.plan.SparkCompilerException:
> ERROR 2171: Expected one but found more then one root physical operator in
> physical physicalPlan.
> at
> org.apache.pig.backend.hadoop.executionengine.spark.plan.SparkCompiler.visitCollectedGroup(SparkCompiler.java:512)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POCollectedGroup.visit(POCollectedGroup.java:93)
> at
> org.apache.pig.backend.hadoop.executionengine.spark.plan.SparkCompiler.compile(SparkCompiler.java:259)
> at
> org.apache.pig.backend.hadoop.executionengine.spark.plan.SparkCompiler.compile(SparkCompiler.java:240)
> at
> org.apache.pig.backend.hadoop.executionengine.spark.plan.SparkCompiler.compile(SparkCompiler.java:240)
> at
> org.apache.pig.backend.hadoop.executionengine.spark.plan.SparkCompiler.compile(SparkCompiler.java:165)
> at
> org.apache.pig.backend.hadoop.executionengine.spark.SparkLauncher.compile(SparkLauncher.java:425)
> at
> org.apache.pig.backend.hadoop.executionengine.spark.SparkLauncher.launchPig(SparkLauncher.java:150)
> at
> org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.launchPig(HExecutionEngine.java:301)
> at org.apache.pig.PigServer.launchPlan(PigServer.java:1390)
> at
> org.apache.pig.PigServer.executeCompiledLogicalPlan(PigServer.java:1375)
> at org.apache.pig.PigServer.storeEx(PigServer.java:1034)
> ... 27 more
> {code}
> After we implement Merge join, this unit test can be fixed.
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