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https://issues.apache.org/jira/browse/HIVE-7695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14156105#comment-14156105
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Prasanth J commented on HIVE-7695:
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LGTM, +1
> hive stats issue when insert query is appending data into table
> ---------------------------------------------------------------
>
> Key: HIVE-7695
> URL: https://issues.apache.org/jira/browse/HIVE-7695
> Project: Hive
> Issue Type: Bug
> Components: Logical Optimizer, Statistics
> Affects Versions: 0.13.0, 0.13.1
> Reporter: Thejas M Nair
> Assignee: Ashutosh Chauhan
> Attachments: HIVE-7695-test.patch, HIVE-7695.1.patch,
> HIVE-7695.2.patch, HIVE-7695.3.patch, HIVE-7695.4.patch, tests.patch
>
>
> When 'insert' is used to append (not overrite), the stats don't seem to get
> updated.
> {code}
> set hive.compute.query.using.stats=true;
> set hive.stats.autogather=true;
> //insert 4 rows
> insert into table t2 select * from t1;
> select count(*) from t2;
> 4
> //insert 4 again (appending instead of overrite)
> insert into table t2 select * from t1;
> select count(*) from t2;
> 4
> select * from t2;
> 1
> 2
> 3
> 4
> 1
> 2
> 3
> 4
> {code}
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