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https://issues.apache.org/jira/browse/HIVE-2629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13183312#comment-13183312
 ] 

Amareshwari Sriramadasu commented on HIVE-2629:
-----------------------------------------------

Reverted the previous commit, as the patch broke CombineFileInputFormat changes 
in 23 shims.

Jobs which use CombineFileInputFormat fail with following exception:
java.lang.ClassCastException: [Lorg.apache.hadoop.mapred.InputSplit; cannot be 
cast to [Lorg.apache.hadoop.mapred.lib.CombineFileSplit;
        at 
org.apache.hadoop.hive.shims.HadoopShimsSecure$CombineFileInputFormatShim.getSplits(HadoopShimsSecure.java:387)
        at 
org.apache.hadoop.hive.shims.HadoopShimsSecure$CombineFileInputFormatShim.getSplits(HadoopShimsSecure.java:353)
        at 
org.apache.hadoop.hive.ql.io.CombineHiveInputFormat.getSplits(CombineHiveInputFormat.java:387)
        at 
org.apache.hadoop.mapreduce.JobSubmitter.writeOldSplits(JobSubmitter.java:472)
        at 
org.apache.hadoop.mapreduce.JobSubmitter.writeSplits(JobSubmitter.java:464)
        at 
org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:360)
        at org.apache.hadoop.mapreduce.Job$2.run(Job.java:1159)
        at org.apache.hadoop.mapreduce.Job$2.run(Job.java:1156)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1152)
        at org.apache.hadoop.mapreduce.Job.submit(Job.java:1156)
        at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:571)
        at 
org.apache.hadoop.hive.ql.exec.ExecDriver.execute(ExecDriver.java:432)
        at org.apache.hadoop.hive.ql.exec.ExecDriver.main(ExecDriver.java:690)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:189)
Job Submission failed with exception 
'java.lang.ClassCastException([Lorg.apache.hadoop.mapred.InputSplit; cannot be 
cast

Looks like we need to have Hadoop20SShims.java and Hadoop23Shims.java files 
with proper CombineFileInputFormat changes for each version.
                
> Make a single Hive binary work with both 0.20.x and 0.23.0
> ----------------------------------------------------------
>
>                 Key: HIVE-2629
>                 URL: https://issues.apache.org/jira/browse/HIVE-2629
>             Project: Hive
>          Issue Type: Bug
>          Components: Shims
>            Reporter: Carl Steinbach
>            Assignee: Thomas Weise
>             Fix For: 0.8.1, 0.9.0
>
>         Attachments: HIVE-2629.3.patch, HIVE-2629.D711.1.patch, 
> HIVE-2629.D711.2.patch, HIVE-2629.D711.3.patch, HIVE-2629.patch
>
>


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