Rui Li created HIVE-10816:
-----------------------------
Summary: NPE in ExecDriver::handleSampling when submitted via
child JVM
Key: HIVE-10816
URL: https://issues.apache.org/jira/browse/HIVE-10816
Project: Hive
Issue Type: Bug
Reporter: Rui Li
When {{hive.exec.submitviachild = true}}, parallel order by fails with NPE and
falls back to single-reducer mode. Stack trace:
{noformat}
2015-05-25 08:41:04,446 ERROR [main]: mr.ExecDriver
(ExecDriver.java:execute(386)) - Sampling error
java.lang.NullPointerException
at
org.apache.hadoop.hive.ql.exec.mr.ExecDriver.handleSampling(ExecDriver.java:513)
at
org.apache.hadoop.hive.ql.exec.mr.ExecDriver.execute(ExecDriver.java:379)
at
org.apache.hadoop.hive.ql.exec.mr.ExecDriver.main(ExecDriver.java:750)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
{noformat}
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