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https://issues.apache.org/jira/browse/HIVE-13965?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15345314#comment-15345314
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Vaibhav Gumashta commented on HIVE-13965:
-----------------------------------------
+1 pending unit test analysis.
> Empty resultset run into Exception when using Thrift Binary Serde
> -----------------------------------------------------------------
>
> Key: HIVE-13965
> URL: https://issues.apache.org/jira/browse/HIVE-13965
> Project: Hive
> Issue Type: Sub-task
> Components: HiveServer2
> Affects Versions: 2.1.0
> Reporter: Ziyang Zhao
> Assignee: Ziyang Zhao
> Attachments: HIVE-13965.1.patch.txt
>
>
> This error can be reproduced by enabling thrift binary serde, using beeline
> connect to hiveserver2 and executing the following commands:
> >create table test3(num1 int);
> >create table test4(num1 int);
> >insert into test3 values(1);
> >insert into test4 values(2);
> >select * from test3 join test4 on test3.num1=test4.num1;
> The result should be empty, but it gives an exception:
> Diagnostic Messages for this Task:
> Error: java.lang.RuntimeException: Hive Runtime Error while closing operators
> at
> org.apache.hadoop.hive.ql.exec.mr.ExecMapper.close(ExecMapper.java:206)
> at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:61)
> at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:453)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343)
> at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
> at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:162)
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.hive.ql.exec.FileSinkOperator.closeOp(FileSinkOperator.java:1029)
> at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:641)
> at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:655)
> at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:655)
> at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:655)
> at
> org.apache.hadoop.hive.ql.exec.mr.ExecMapper.close(ExecMapper.java:195)
> ... 8 more
> This error is caused in FileSinkOperator.java.
> If the resultset is empty, function process() will not be called, so variable
> "fpaths" will not be set. When run into CloseOp(),
> if (conf.isHiveServerQuery() && HiveConf.getBoolVar(hconf,
> HiveConf.ConfVars.HIVE_SERVER2_THRIFT_RESULTSET_SERIALIZE_IN_TASKS)
> &&
>
> serializer.getClass().getName().equalsIgnoreCase(ThriftJDBCBinarySerDe.class.getName()))
> {
> try {
> recordValue = serializer.serialize(null, inputObjInspectors[0]);
> rowOutWriters = fpaths.outWriters;
> rowOutWriters[0].write(recordValue);
> } catch (SerDeException | IOException e) {
> throw new HiveException(e);
> }
> }
> Here fpaths is null.
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