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https://issues.apache.org/jira/browse/DRILL-6475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16548180#comment-16548180
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ASF GitHub Bot commented on DRILL-6475:
---------------------------------------
priteshm commented on issue #1381: DRILL-6475: Unnest: Null fieldId Pointer.
URL: https://github.com/apache/drill/pull/1381#issuecomment-406022366
@amansinha100 , @HanumathRao since it has an overall +1, I added the
ready-to-commit label on the JIRA
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> Unnest: Null fieldId Pointer
> -----------------------------
>
> Key: DRILL-6475
> URL: https://issues.apache.org/jira/browse/DRILL-6475
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Relational Operators
> Reporter: Boaz Ben-Zvi
> Assignee: Hanumath Rao Maduri
> Priority: Major
> Labels: ready-to-commit
> Fix For: 1.14.0
>
>
> Executing the following (in TestE2EUnnestAndLateral.java) causes an NPE as
> `fieldId` is null in `schemaChanged()`:
> {code}
> @Test
> public void testMultipleBatchesLateral_twoUnnests() throws Exception {
> String sql = "SELECT t5.l_quantity FROM dfs.`lateraljoin/multipleFiles/` t,
> LATERAL " +
> "(SELECT t2.ordrs FROM UNNEST(t.c_orders) t2(ordrs)) t3(ordrs), LATERAL " +
> "(SELECT t4.l_quantity FROM UNNEST(t3.ordrs) t4(l_quantity)) t5";
> test(sql);
> }
> {code}
>
> And the error is:
> {code}
> Error: SYSTEM ERROR: NullPointerException
> Fragment 0:0
> [Error Id: 25f42765-8f68-418e-840a-ffe65788e1e2 on 10.254.130.25:31020]
> (java.lang.NullPointerException) null
>
> org.apache.drill.exec.physical.impl.unnest.UnnestRecordBatch.schemaChanged():381
> org.apache.drill.exec.physical.impl.unnest.UnnestRecordBatch.innerNext():199
> org.apache.drill.exec.record.AbstractRecordBatch.next():172
>
> org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next():229
> org.apache.drill.exec.record.AbstractRecordBatch.next():119
>
> org.apache.drill.exec.physical.impl.join.LateralJoinBatch.prefetchFirstBatchFromBothSides():241
> org.apache.drill.exec.physical.impl.join.LateralJoinBatch.buildSchema():264
> org.apache.drill.exec.record.AbstractRecordBatch.next():152
>
> org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next():229
> org.apache.drill.exec.record.AbstractRecordBatch.next():119
> org.apache.drill.exec.record.AbstractRecordBatch.next():109
> org.apache.drill.exec.record.AbstractUnaryRecordBatch.innerNext():63
>
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext():137
> org.apache.drill.exec.record.AbstractRecordBatch.next():172
>
> org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next():229
> org.apache.drill.exec.record.AbstractRecordBatch.next():119
> org.apache.drill.exec.record.AbstractRecordBatch.next():109
> org.apache.drill.exec.record.AbstractUnaryRecordBatch.innerNext():63
>
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext():137
> org.apache.drill.exec.record.AbstractRecordBatch.next():172
>
> org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next():229
> org.apache.drill.exec.physical.impl.BaseRootExec.next():103
> org.apache.drill.exec.physical.impl.ScreenCreator$ScreenRoot.innerNext():83
> org.apache.drill.exec.physical.impl.BaseRootExec.next():93
> org.apache.drill.exec.work.fragment.FragmentExecutor$1.run():292
> org.apache.drill.exec.work.fragment.FragmentExecutor$1.run():279
> java.security.AccessController.doPrivileged():-2
> javax.security.auth.Subject.doAs():422
> org.apache.hadoop.security.UserGroupInformation.doAs():1657
> org.apache.drill.exec.work.fragment.FragmentExecutor.run():279
> org.apache.drill.common.SelfCleaningRunnable.run():38
> java.util.concurrent.ThreadPoolExecutor.runWorker():1142
> java.util.concurrent.ThreadPoolExecutor$Worker.run():617
> java.lang.Thread.run():745 (state=,code=0)
> {code}
>
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