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https://issues.apache.org/jira/browse/HIVE-4014?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13621063#comment-13621063
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Tamas Tarjanyi commented on HIVE-4014:
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Meanwhile I have tested 4.2.0 cloudera release with so called parcel "CDH
4.2.0-1.cdh4.2.0.p0.10"
https://ccp.cloudera.com/display/SUPPORT/CDH4+Downloadable+Tarballs
Unfortunately it still seems to have this problem. (Did not do very rigorous
testing now.)
As noted above apache hive 0.10.0 seems to be fine.
If you set it to "Can not Reproduce" than I am afraid this bug will not be
visible to the hadoop users and some unlucky one will use the wrong version.
Also I am afraid that distributors will not realize this as a problem. Can you
set it to Fixed in 0.10.0? Than no more work. Issue can be closed since trunk
is fine. But if somebody checks bug list this will be visible as a possible
problem.
Thanks.
> Hive+RCFile is not doing column pruning and reading much more data than
> necessary
> ---------------------------------------------------------------------------------
>
> Key: HIVE-4014
> URL: https://issues.apache.org/jira/browse/HIVE-4014
> Project: Hive
> Issue Type: Bug
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Vinod Kumar Vavilapalli
>
> With even simple projection queries, I see that HDFS bytes read counter
> doesn't show any reduction in the amount of data read.
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