[jira] [Comment Edited] (HIVE-17265) Cache merged column stats from retrieved partitions

["Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-17265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16124404#comment-16124404 ] 

Jesus Camacho Rodriguez edited comment on HIVE-17265 at 8/12/17 2:17 AM:
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[~ashutoshc], sure, I have created it in : https://reviews.apache.org/r/61604/

Thanks


was (Author: jcamachorodriguez):
Sure, I have created it in : https://reviews.apache.org/r/61604/

Thanks

> Cache merged column stats from retrieved partitions
> ---------------------------------------------------
>
>                 Key: HIVE-17265
>                 URL: https://issues.apache.org/jira/browse/HIVE-17265
>             Project: Hive
>          Issue Type: Bug
>          Components: Statistics
>    Affects Versions: 3.0.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-17265.02.patch, HIVE-17265.patch
>
>
> Currently when we retrieve stats from the metastore for a column in a partitioned table, we will execute the logic to merge the column stats coming from each partition multiple times.
> Even though we avoid multiple calls to metastore if the cache for the stats in enabled, merging the stats for a given column can take a large amount of time if there is a large number of partitions.



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