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https://issues.apache.org/jira/browse/NIFI-7930?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18061751#comment-18061751
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Pierre Villard commented on NIFI-7930:
--------------------------------------
Had a quick look, this is no longer an issue and has been resolved via
NIFI-9781 as far as I can tell. Closing.
> QueryRecord fails with RPATH on arrays
> --------------------------------------
>
> Key: NIFI-7930
> URL: https://issues.apache.org/jira/browse/NIFI-7930
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Reporter: Pierre Villard
> Priority: Major
>
> When executing QueryRecord using a query with RPATH on arrays like the one
> provided in the additional details of the processor's documentation, it fails
> with the following stack trace:
> {noformat}
> 2793 [pool-1-thread-1] ERROR org.apache.nifi.processors.standard.QueryRecord
> - QueryRecord[id=56b8b985-0609-4e52-9124-1bcbbbb8afab] Unable to query
> FlowFile[0,fields-value-name.json,465B] due to java.lang.ClassCastException:
> [Ljava.lang.Object; cannot be cast to java.util.List:
> java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to
> java.util.List
> java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to
> java.util.List
> at Baz$1$1.moveNext(Unknown Source)
> at
> org.apache.calcite.linq4j.Linq4j$EnumeratorIterator.<init>(Linq4j.java:675)
> at org.apache.calcite.linq4j.Linq4j.enumeratorIterator(Linq4j.java:95)
> at
> org.apache.calcite.linq4j.AbstractEnumerable.iterator(AbstractEnumerable.java:33)
> at org.apache.calcite.avatica.MetaImpl.createCursor(MetaImpl.java:82)
> at
> org.apache.calcite.avatica.AvaticaResultSet.execute(AvaticaResultSet.java:184)
> at
> org.apache.calcite.jdbc.CalciteResultSet.execute(CalciteResultSet.java:64)
> at
> org.apache.calcite.jdbc.CalciteResultSet.execute(CalciteResultSet.java:43)
> at
> org.apache.calcite.avatica.AvaticaConnection.executeQueryInternal(AvaticaConnection.java:573)
> at
> org.apache.calcite.avatica.AvaticaPreparedStatement.executeQuery(AvaticaPreparedStatement.java:137)
> at
> org.apache.nifi.processors.standard.QueryRecord.query(QueryRecord.java:465)
> at
> org.apache.nifi.processors.standard.QueryRecord.onTrigger(QueryRecord.java:320)
> at
> org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
> at
> org.apache.nifi.util.StandardProcessorTestRunner$RunProcessor.call(StandardProcessorTestRunner.java:270)
> at
> org.apache.nifi.util.StandardProcessorTestRunner$RunProcessor.call(StandardProcessorTestRunner.java:264)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
> 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) {noformat}
> A unit test reproducing the issue is available here:
> [https://github.com/pvillard31/nifi/commit/1016b4a540fab22bcad119e7ffe2363b99c07a0c]
> I didn't get the time/opportunity to work on a fix for this.
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