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https://issues.apache.org/jira/browse/DRILL-5869?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Hanumath Rao Maduri reassigned DRILL-5869:
------------------------------------------
Assignee: Hanumath Rao Maduri
> Empty maps not handled
> -----------------------
>
> Key: DRILL-5869
> URL: https://issues.apache.org/jira/browse/DRILL-5869
> Project: Apache Drill
> Issue Type: Bug
> Components: Storage - JSON
> Affects Versions: 1.11.0
> Reporter: Prasad Nagaraj Subramanya
> Assignee: Hanumath Rao Maduri
>
> Consider the below json -
> {code}
> {a:{}}
> {code}
> A query on the column 'a' throws NPE -
> {code}
> select a from temp.json;
> {code}
> Stack trace -
> {code}
> org.apache.drill.common.exceptions.UserException: SYSTEM ERROR:
> NullPointerException
> Fragment 0:0
> [Error Id: 7f81fa02-4b20-4401-9d18-bd901653d11d on pns182.qa.lab:31010]
> at
> org.apache.drill.common.exceptions.UserException$Builder.build(UserException.java:586)
> ~[drill-common-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.sendFinalState(FragmentExecutor.java:298)
> [drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.cleanup(FragmentExecutor.java:160)
> [drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:267)
> [drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.common.SelfCleaningRunnable.run(SelfCleaningRunnable.java:38)
> [drill-common-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> [na:1.8.0_144]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> [na:1.8.0_144]
> at java.lang.Thread.run(Thread.java:748) [na:1.8.0_144]
> Caused by: java.lang.NullPointerException: null
> at
> org.apache.drill.exec.test.generated.ProjectorGen0.setup(ProjectorTemplate.java:91)
> ~[na:na]
> at
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.setupNewSchemaFromInput(ProjectRecordBatch.java:497)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.setupNewSchema(ProjectRecordBatch.java:505)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:82)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext(ProjectRecordBatch.java:141)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:164)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:105)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.physical.impl.ScreenCreator$ScreenRoot.innerNext(ScreenCreator.java:81)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:95)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:234)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:227)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at java.security.AccessController.doPrivileged(Native Method)
> ~[na:1.8.0_144]
> at javax.security.auth.Subject.doAs(Subject.java:422) ~[na:1.8.0_144]
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1595)
> ~[hadoop-common-2.7.0-mapr-1607.jar:na]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:227)
> [drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> ... 4 common frames omitted
> {code}
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