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https://issues.apache.org/jira/browse/HIVE-4804?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13701740#comment-13701740
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Edward Capriolo commented on HIVE-4804:
---------------------------------------
What is the next step? what jobs run faster with the single reducer vs the
sampling approach? Should this be the default option (I think yes) or something
to turn on?
> parallel order by fails for small datasets
> ------------------------------------------
>
> Key: HIVE-4804
> URL: https://issues.apache.org/jira/browse/HIVE-4804
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Navis
> Assignee: Navis
> Fix For: 0.12.0
>
> Attachments: HIVE-4804.D11571.1.patch
>
>
> {noformat}
> java.lang.RuntimeException: Error in configuring object
> at
> org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:93)
> at
> org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:64)
> at
> org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117)
> at
> org.apache.hadoop.mapred.MapTask$OldOutputCollector.<init>(MapTask.java:481)
> at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:390)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:324)
> at org.apache.hadoop.mapred.Child$4.run(Child.java:266)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:416)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1278)
> at org.apache.hadoop.mapred.Child.main(Child.java:260)
> Caused by: java.lang.reflect.InvocationTargetException
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:616)
> at
> org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:88)
> ... 10 more
> Caused by: java.lang.IllegalArgumentException: Can't read partitions file
> at
> org.apache.hadoop.mapred.lib.TotalOrderPartitioner.configure(TotalOrderPartitioner.java:91)
> at
> org.apache.hadoop.hive.ql.exec.HiveTotalOrderPartitioner.configure(HiveTotalOrderPartitioner.java:37)
> ... 15 more
> Caused by: java.io.IOException: Split points are out of order
> at
> org.apache.hadoop.mapred.lib.TotalOrderPartitioner.configure(TotalOrderPartitioner.java:78)
> ... 16 more
> {noformat}
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