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https://issues.apache.org/jira/browse/PIG-5416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17428481#comment-17428481
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Koji Noguchi commented on PIG-5416:
-----------------------------------

Not sure what's happening since the code is going through the below method 
before hitting the error...
{code:title=SparkStatsUtil.java}
 45     public static void waitForJobAddStats(int jobID,
 46                                           POStore poStore, SparkOperator 
sparkOperator,
 47                                           JobStatisticCollector 
jobStatisticCollector,
 48                                           JavaSparkContext sparkContext,
 49                                           SparkPigStats sparkPigStats)
 50             throws InterruptedException {
 51         // Even though we are not making any async calls to spark,
 52         // the SparkStatusTracker can still return RUNNING status
 53         // for a finished job.
 54         // Looks like there is a race condition between spark
 55         // "event bus" thread updating it's internal listener and
 56         // this driver thread calling SparkStatusTracker.
 57         // To workaround this, we will wait for this job to "finish".
 58         jobStatisticCollector.waitForJobToEnd(jobID);  
********************************************************
 59         sparkPigStats.addJobStats(poStore, sparkOperator, jobID, 
jobStatisticCollector,
 60                 sparkContext);
 {code}

> Spark unit tests failing randomly with "java.lang.RuntimeException: 
> Unexpected job execution status RUNNING"
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: PIG-5416
>                 URL: https://issues.apache.org/jira/browse/PIG-5416
>             Project: Pig
>          Issue Type: Bug
>          Components: spark
>            Reporter: Koji Noguchi
>            Priority: Minor
>
> Spark unit tests fail randomly with same errors. 
>  Sample stack trace showing "Caused by: java.lang.RuntimeException: 
> Unexpected job execution status RUNNING".
> {noformat:title=TestBuiltInBagToTupleOrString.testPigScriptForBagToTupleUDF}
> Unable to store alias B
> org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1002: Unable to 
> store alias B
> at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1783)
> at org.apache.pig.PigServer.registerQuery(PigServer.java:708)
> at org.apache.pig.PigServer.registerQuery(PigServer.java:721)
> at 
> org.apache.pig.test.TestBuiltInBagToTupleOrString.testPigScriptForBagToTupleUDF(TestBuiltInBagToTupleOrString.java:429)
> Caused by: org.apache.pig.impl.plan.VisitorException: ERROR 0: fail to get 
> the rdds of this spark operator:
> at 
> org.apache.pig.backend.hadoop.executionengine.spark.JobGraphBuilder.visitSparkOp(JobGraphBuilder.java:115)
> at 
> org.apache.pig.backend.hadoop.executionengine.spark.plan.SparkOperator.visit(SparkOperator.java:140)
> at 
> org.apache.pig.backend.hadoop.executionengine.spark.plan.SparkOperator.visit(SparkOperator.java:37)
> at 
> org.apache.pig.impl.plan.DependencyOrderWalker.walk(DependencyOrderWalker.java:87)
> at org.apache.pig.impl.plan.PlanVisitor.visit(PlanVisitor.java:46)
> at 
> org.apache.pig.backend.hadoop.executionengine.spark.SparkLauncher.launchPig(SparkLauncher.java:240)
> at 
> org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.launchPig(HExecutionEngine.java:290)
> at org.apache.pig.PigServer.launchPlan(PigServer.java:1479)
> at org.apache.pig.PigServer.executeCompiledLogicalPlan(PigServer.java:1464)
> at org.apache.pig.PigServer.execute(PigServer.java:1453)
> at org.apache.pig.PigServer.access$500(PigServer.java:119)
> at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1778)
> Caused by: java.lang.RuntimeException: Unexpected job execution status RUNNING
> at 
> org.apache.pig.tools.pigstats.spark.SparkStatsUtil.isJobSuccess(SparkStatsUtil.java:138)
> at 
> org.apache.pig.tools.pigstats.spark.SparkPigStats.addJobStats(SparkPigStats.java:75)
> at 
> org.apache.pig.tools.pigstats.spark.SparkStatsUtil.waitForJobAddStats(SparkStatsUtil.java:59)
> at 
> org.apache.pig.backend.hadoop.executionengine.spark.JobGraphBuilder.sparkOperToRDD(JobGraphBuilder.java:225)
> at 
> org.apache.pig.backend.hadoop.executionengine.spark.JobGraphBuilder.visitSparkOp(JobGraphBuilder.java:112)
> {noformat}



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