Volodymyr Vysotskyi created DRILL-6793:
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Summary: FragmentExecutor cannot send its final state for the case
when RootExec root wasn't initialized
Key: DRILL-6793
URL: https://issues.apache.org/jira/browse/DRILL-6793
Project: Apache Drill
Issue Type: Bug
Affects Versions: 1.15.0
Reporter: Volodymyr Vysotskyi
Assignee: Bohdan Kazydub
Fix For: 1.15.0
*Problem description*
For the case when the exception was thrown during [initializing {{RootExec
root}}|https://github.com/apache/drill/blob/master/exec/java-exec/src/main/java/org/apache/drill/exec/work/fragment/FragmentExecutor.java#L264],
after that {{root.dumpBatches()}} is called in {{FragmentExecutor.cleanup()}}
method, so NPE will be thrown before releasing the resources and sending the
final state.
{noformat}
20:11:22.910 [243f2a45-cd8a-b3f8-3d5d-36fdbe8fb446:frag:0:0] ERROR
o.a.d.exec.server.BootStrapContext -
org.apache.drill.exec.work.WorkManager$WorkerBee$2.run() leaked an exception.
Exception in thread "243f2a45-cd8a-b3f8-3d5d-36fdbe8fb446:frag:0:0"
java.lang.NullPointerException
at
org.apache.drill.exec.work.fragment.FragmentExecutor.cleanup(FragmentExecutor.java:211)
at
org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:330)
at
org.apache.drill.common.SelfCleaningRunnable.run(SelfCleaningRunnable.java:38)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
java.lang.NullPointerException: null
at
org.apache.drill.exec.work.fragment.FragmentExecutor.cleanup(FragmentExecutor.java:211)
~[classes/:na]
at
org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:330)
~[classes/:na]
at
org.apache.drill.common.SelfCleaningRunnable.run(SelfCleaningRunnable.java:38)
~[classes/:na]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
~[na:1.8.0_181]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[na:1.8.0_181]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_181]
{noformat}
*Simple reproduce*
Throw the exception in the constructor of {{ParquetRecordReader}} and run any
parquet test, for example
{{TestParquetMetadataCache.testPartitionPruningWithMetadataCache_1()}}
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