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https://issues.apache.org/jira/browse/DRILL-653?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Mehant Baid updated DRILL-653:
------------------------------
Attachment: DRILL-653.patch
Fixed issue while deserializing plan fragment with HiveSubScan.
> Group By Query hangs
> ---------------------
>
> Key: DRILL-653
> URL: https://issues.apache.org/jira/browse/DRILL-653
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Flow
> Affects Versions: 1.0.0-milestone-1
> Reporter: Bhallamudi Venkata Siva Kamesh
> Assignee: Jacques Nadeau
> Attachments: DRILL-653.patch, EMP2_Table.csv, load_emp.hql
>
>
> The following query (using hive schema)
> {noformat}
> select c5, max(c3) from drill.table group by c5;
> {noformat}
> hangs and the at the drill bit side, getting the following exception
> {noformat}
> 10:54:47.740 [BitServer-1] ERROR o.a.d.e.w.f.AbstractStatusReporter - Error
> d03a795f-a881-4c90-9d76-ec6a0abb33e6: Failure while parsing fragment
> execution plan.
> com.fasterxml.jackson.databind.JsonMappingException: Can not find a (Map) Key
> deserializer for type [collection type; class java.util.List, contains
> [simple type, class java.lang.String]]
> at
> com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:830)
> ~[jackson-databind-2.2.0.jar:2.2.0]
> at
> org.apache.drill.exec.planner.PhysicalPlanReader.readFragmentOperator(PhysicalPlanReader.java:96)
>
> ~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
> at
> org.apache.drill.exec.work.batch.ControlHandlerImpl.startNewRemoteFragment(ControlHandlerImpl.java:107)
>
> [drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
> at
> org.apache.drill.exec.work.batch.ControlHandlerImpl.handle(ControlHandlerImpl.java:80)
>
> [drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
> at
> org.apache.drill.exec.rpc.control.ControlServer.handle(ControlServer.java:56)
> [drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
> at
> org.apache.drill.exec.rpc.control.ControlServer.handle(ControlServer.java:34)
> [drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
> at
> org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:154)
> [drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
> at
> org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:139)
> [drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
> {noformat}
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