[jira] [Created] (BEAM-2787) IllegalArgumentException with MongoDbIO with empty PCollection

["Siddharth Mittal (JIRA)" <ji...@apache.org>]

Siddharth Mittal created BEAM-2787:
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             Summary: IllegalArgumentException with MongoDbIO with empty PCollection
                 Key: BEAM-2787
                 URL: https://issues.apache.org/jira/browse/BEAM-2787
             Project: Beam
          Issue Type: Bug
          Components: beam-model
    Affects Versions: 2.0.0
            Reporter: Siddharth Mittal
            Assignee: Kenneth Knowles


We have read a file and created a PCollection of Strings where each record represent one line on the file. There after we have multiple PTransforms to validate the records. In the end The Pcollection was filtered into two PCollection , one with all valid records and one with all invalid records. Now both the pcollections are stored to respective mongo db collections . In case if any of these pcollection is empty we are facing below exception trace :



17/08/11 05:30:20 INFO SparkContext: Successfully stopped SparkContext
Exception in thread "main" org.apache.beam.sdk.Pipeline$PipelineExecutionException: java.lang.IllegalArgumentException: state should be: writes is not an empty list
        at org.apache.beam.runners.spark.SparkPipelineResult.beamExceptionFrom(SparkPipelineResult.java:66)
        at org.apache.beam.runners.spark.SparkPipelineResult.waitUntilFinish(SparkPipelineResult.java:99)
        at org.apache.beam.runners.spark.SparkPipelineResult.waitUntilFinish(SparkPipelineResult.java:87)
        at com.hsbc.rsl.applications.DataTransformation.StoreRiskToL3(DataTransformation.java:106)
        at com.hsbc.rsl.applications.DataTransformation.lambda$executeAndWaitUntilFinish$5(DataTransformation.java:55)
        at com.hsbc.rsl.applications.DataTransformation$$Lambda$10/737852016.accept(Unknown Source)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
        at java.util.stream.IntPipeline$4$1.accept(IntPipeline.java:250)
        at java.util.stream.Streams$RangeIntSpliterator.forEachRemaining(Streams.java:110)
        at java.util.Spliterator$OfInt.forEachRemaining(Spliterator.java:693)
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512)
        at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502)
        at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
        at com.hsbc.rsl.applications.DataTransformation.executeAndWaitUntilFinish(DataTransformation.java:51)
        at com.hsbc.rsl.applications.TransformationProcessor.main(TransformationProcessor.java:23)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:497)
        at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:731)
        at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:181)
        at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:206)
        at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:121)
        at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
Caused by: java.lang.IllegalArgumentException: state should be: writes is not an empty list
        at com.mongodb.assertions.Assertions.isTrueArgument(Assertions.java:99)
        at com.mongodb.operation.MixedBulkWriteOperation.<init>(MixedBulkWriteOperation.java:95)
        at com.mongodb.MongoCollectionImpl.insertMany(MongoCollectionImpl.java:323)
        at com.mongodb.MongoCollectionImpl.insertMany(MongoCollectionImpl.java:311)
        at org.apache.beam.sdk.io.mongodb.MongoDbIO$Write$WriteFn.flush(MongoDbIO.java:513)
        at org.apache.beam.sdk.io.mongodb.MongoDbIO$Write$WriteFn.finishBundle(MongoDbIO.java:506)
17/08/11 05:30:20 INFO RemoteActorRefProvider$RemotingTerminator: Remoting shut down.



There is no exception when we have at least one record in the pcollection.  



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