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https://issues.apache.org/jira/browse/ASTERIXDB-1653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15508127#comment-15508127
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Heri Ramampiaro commented on ASTERIXDB-1653:
--------------------------------------------
What I meant was a better exception handling would be helpful.
> NullPointerException in executing AQL
> -------------------------------------
>
> Key: ASTERIXDB-1653
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-1653
> Project: Apache AsterixDB
> Issue Type: Bug
> Components: AsterixDB, Functions - AQL
> Reporter: Heri Ramampiaro
> Priority: Minor
>
> If one tries to run an UDF having an open type as input, but still specify
> the field which is open, one gets
> "Internal error. Please check instance logs for further details.
> [NullPointerException]".
> For example:
> create type FeatureType as open {
> id: string,
> outlook: string,
> temperature: double,
> humidity: double,
> windy:string
> }
> works fine, but
> create type FeatureType as open {
> id: string,
> outlook: string,
> temperature: double,
> humidity: double,
> windy:string,
> play:string?
> }
> would give the exception when using FeatureType as an input type to a UDF.
> Inside the UDF, for the first case one should add the field "play" with its
> value, while for the second case one should set the value of the field
> "play". However, the opposite would give the above exception, which does not
> seem to reflect the real problem.
> The log gives the following:
> "org.apache.hyracks.api.exceptions.HyracksDataException:
> org.apache.hyracks.api.exceptions.HyracksDataException: null
> at
> org.apache.hyracks.api.rewriter.runtime.SuperActivityOperatorNodePushable.runInParallel(SuperActivityOperatorNodePushable.java:218)
> at
> org.apache.hyracks.api.rewriter.runtime.SuperActivityOperatorNodePushable.initialize(SuperActivityOperatorNodePushable.java:83)
> at org.apache.hyracks.control.nc.Task.run(Task.java:263)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.util.concurrent.ExecutionException:
> org.apache.hyracks.api.exceptions.HyracksDataException: null
> at java.util.concurrent.FutureTask.report(FutureTask.java:122)
> at java.util.concurrent.FutureTask.get(FutureTask.java:192)
> at
> org.apache.hyracks.api.rewriter.runtime.SuperActivityOperatorNodePushable.runInParallel(SuperActivityOperatorNodePushable.java:212)
> ... 5 more
> Caused by: org.apache.hyracks.api.exceptions.HyracksDataException: null
> at
> org.apache.hyracks.storage.am.common.dataflow.IndexSearchOperatorNodePushable.close(IndexSearchOperatorNodePushable.java:233)
> at
> org.apache.hyracks.algebricks.runtime.operators.std.EmptyTupleSourceRuntimeFactory$1.close(EmptyTupleSourceRuntimeFactory.java:60)
> at
> org.apache.hyracks.algebricks.runtime.operators.meta.AlgebricksMetaOperatorDescriptor$1.initialize(AlgebricksMetaOperatorDescriptor.java:116)
> at
> org.apache.hyracks.api.rewriter.runtime.SuperActivityOperatorNodePushable.lambda$initialize$0(SuperActivityOperatorNodePushable.java:83)
> at
> org.apache.hyracks.api.rewriter.runtime.SuperActivityOperatorNodePushable$$Lambda$7/306984200.runAction(Unknown
> Source)
> at
> org.apache.hyracks.api.rewriter.runtime.SuperActivityOperatorNodePushable$1.call(SuperActivityOperatorNodePushable.java:205)
> at
> org.apache.hyracks.api.rewriter.runtime.SuperActivityOperatorNodePushable$1.call(SuperActivityOperatorNodePushable.java:202)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> ... 3 more
> Caused by: java.lang.NullPointerException
> at
> org.apache.hyracks.algebricks.runtime.operators.base.AbstractOneInputOneOutputOneFramePushRuntime.flushAndReset(AbstractOneInputOneOutputOneFramePushRuntime.java:62)
> at
> org.apache.hyracks.algebricks.runtime.operators.base.AbstractOneInputOneOutputOneFramePushRuntime.flushIfNotFailed(AbstractOneInputOneOutputOneFramePushRuntime.java:69)
> at
> org.apache.hyracks.algebricks.runtime.operators.base.AbstractOneInputOneOutputOneFramePushRuntime.close(AbstractOneInputOneOutputOneFramePushRuntime.java:55)
> at
> org.apache.hyracks.algebricks.runtime.operators.meta.AlgebricksMetaOperatorDescriptor$2.close(AlgebricksMetaOperatorDescriptor.java:153)
> at
> org.apache.hyracks.storage.am.common.dataflow.IndexSearchOperatorNodePushable.close(IndexSearchOperatorNodePushable.java:230)
> ... 10 more"
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