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https://issues.apache.org/jira/browse/HIVE-3940?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13567948#comment-13567948
]
Hudson commented on HIVE-3940:
------------------------------
Integrated in Hive-trunk-h0.21 #1949 (See
[https://builds.apache.org/job/Hive-trunk-h0.21/1949/])
HIVE-3940. Track columns accessed in each table in a query. (Samuel Yuan
via kevinwilfong) (Revision 1440695)
Result = SUCCESS
kevinwilfong :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1440695
Files :
* /hive/trunk/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java
* /hive/trunk/conf/hive-default.xml.template
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/QueryPlan.java
*
/hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/parse/BaseSemanticAnalyzer.java
*
/hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/parse/ColumnAccessAnalyzer.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/parse/ColumnAccessInfo.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java
*
/hive/trunk/ql/src/test/org/apache/hadoop/hive/ql/hooks/CheckColumnAccessHook.java
* /hive/trunk/ql/src/test/queries/clientpositive/column_access_stats.q
* /hive/trunk/ql/src/test/results/clientpositive/column_access_stats.q.out
> Track columns accessed in each table in a query
> -----------------------------------------------
>
> Key: HIVE-3940
> URL: https://issues.apache.org/jira/browse/HIVE-3940
> Project: Hive
> Issue Type: Task
> Components: Query Processor
> Reporter: Samuel Yuan
> Assignee: Samuel Yuan
> Priority: Minor
> Fix For: 0.11.0
>
> Attachments: HIVE-3940.1.patch.txt, HIVE-3940.2.patch.txt,
> HIVE-3940.3.patch.txt
>
>
> Similar to partition access logs, we need to have columns access logs, so
> later we can build tools/reports to inform users if there are wasted columns
> in a table to be trimmed.
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