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https://issues.apache.org/jira/browse/HIVE-8648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14190264#comment-14190264
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Ashutosh Chauhan commented on HIVE-8648:
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Issue here is that we want to invalidate these stats if this an alter statement
like alter table drop partition. Currently, this flag is used to signal
metastore to let through changes in table properties after stats task (or with
autogather). I will look into this more in detail sometime later.
> numRows cannot be set by user
> -----------------------------
>
> Key: HIVE-8648
> URL: https://issues.apache.org/jira/browse/HIVE-8648
> Project: Hive
> Issue Type: Bug
> Affects Versions: 0.13.0, 0.14.0, 0.13.1
> Reporter: Brock Noland
> Assignee: Brock Noland
> Attachments: HIVE-8648.1.patch
>
>
> Since HIVE-3777 users who want to set the number of rows for a table, must do
> as follows:
> {noformat}
> alter table ... set tblproperties ('numRows' = '12345',
> 'STATS_GENERATED_VIA_STATS_TASK' = 'true');
> {noformat}
> Which is strange because (1) users can know the numbers of rows and (2) the
> stat is not generated by a stats task.
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