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From "Pengcheng Xiong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-14143) RawDataSize of RCFile is zero after analyze
Date Sun, 03 Jul 2016 21:27:10 GMT

    [ https://issues.apache.org/jira/browse/HIVE-14143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15360690#comment-15360690
] 

Pengcheng Xiong commented on HIVE-14143:
----------------------------------------

[~nemon], I think we only need to see if it is possible to improve your first patch regarding
the "// Set READ_ALL_COLUMNS to false
"
Right now, you have 
{code}
111	    if (ids.size() > 0) {
112	      // Set READ_ALL_COLUMNS to false
113	      conf.setBoolean(READ_ALL_COLUMNS, false);
114	    }
113	  }	115	  }
{code}
I would like to know if it is possible to change it to the following to be consistent with
the definition we have in TableScanDesc.java:
{code}
111	    if (ids == null || ids.size() != *sizeOfColumnsInTableScan*) {
112	      // Set READ_ALL_COLUMNS to false
113	      conf.setBoolean(READ_ALL_COLUMNS, false);
114	    }
113	  }	115	  }
{code}

Then you do not need to modify the TestColumnProjectionUtils.java. Thanks.

> RawDataSize of RCFile is zero after analyze 
> --------------------------------------------
>
>                 Key: HIVE-14143
>                 URL: https://issues.apache.org/jira/browse/HIVE-14143
>             Project: Hive
>          Issue Type: Bug
>          Components: Statistics
>    Affects Versions: 1.2.1, 2.1.0
>            Reporter: Nemon Lou
>            Assignee: Nemon Lou
>            Priority: Minor
>         Attachments: HIVE-14143.1.patch, HIVE-14143.patch
>
>
> After running the following analyze command ,rawDataSize becomes zero for rcfile tables.
> {noformat}
>  analyze table RCFILE_TABLE compute statistics ;
> {noformat}



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