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Date: Wed, 8 Feb 2012 01:27:00 +0000 (UTC)
From: "Navis (Commented) (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HIVE-2784) Integrating with MapReduce2 get NPE
 throwed when executing a query with a "TABLESAMPLE(x percent)" clause
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    [ https://issues.apache.org/jira/browse/HIVE-2784?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13203100#comment-13203100 ] 

Navis commented on HIVE-2784:
-----------------------------

If you are using hadoop-CDH version, it might be the same problem described by HIVE-2778.
                
> Integrating with MapReduce2 get NPE throwed when executing a query with a "TABLESAMPLE(x percent)" clause
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-2784
>                 URL: https://issues.apache.org/jira/browse/HIVE-2784
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Zhenxiao Luo
>            Assignee: Carl Steinbach
>
> the following TestCliDriver testcases fail:
> sample_islocalmode_hook
> split_sample
> [junit] java.lang.NullPointerException
>     [junit] 	at org.apache.hadoop.hive.ql.io.CombineHiveInputFormat.sampleSplits(CombineHiveInputFormat.java:450)
>     [junit] 	at org.apache.hadoop.hive.ql.io.CombineHiveInputFormat.getSplits(CombineHiveInputFormat.java:403)
>     [junit] 	at org.apache.hadoop.mapreduce.JobSubmitter.writeOldSplits(JobSubmitter.java:472)
>     [junit] 	at org.apache.hadoop.mapreduce.JobSubmitter.writeSplits(JobSubmitter.java:464)
>     [junit] 	at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:360)
>     [junit] 	at org.apache.hadoop.mapreduce.Job$11.run(Job.java:1215)
>     [junit] 	at org.apache.hadoop.mapreduce.Job$11.run(Job.java:1212)
>     [junit] 	at java.security.AccessController.doPrivileged(Native Method)
>     [junit] 	at javax.security.auth.Subject.doAs(Subject.java:396)
>     [junit] 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1157)
>     [junit] 	at org.apache.hadoop.mapreduce.Job.submit(Job.java:1212)
>     [junit] 	at org.apache.hadoop.mapred.JobClient$1.run(JobClient.java:592)
>     [junit] 	at org.apache.hadoop.mapred.JobClient$1.run(JobClient.java:587)
>     [junit] 	at java.security.AccessController.doPrivileged(Native Method)
>     [junit] 	at javax.security.auth.Subject.doAs(Subject.java:396)
>     [junit] 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1157)
>     [junit] 	at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:587)
>     [junit] 	at org.apache.hadoop.hive.ql.exec.ExecDriver.execute(ExecDriver.java:452)
>     [junit] 	at org.apache.hadoop.hive.ql.exec.ExecDriver.main(ExecDriver.java:710)
>     [junit] 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>     [junit] 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>     [junit] 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     [junit] 	at java.lang.reflect.Method.invoke(Method.java:597)
>     [junit] 	at org.apache.hadoop.util.RunJar.main(RunJar.java:200)
> There are other qfiles which pass which use TABLESAMPLE without specifying a percent

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