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From "liyunzhang_intel (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-17634) Estimate the column stats even not retrieve columns from metastore(hive.stats.fetch.column.stats as false)
Date Tue, 10 Oct 2017 05:23:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-17634?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

liyunzhang_intel updated HIVE-17634:
------------------------------------
    Description:  In the statistics estimation([StatsRulesProcFactory|https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/optimizer/stats/annotation/StatsRulesProcFactory.java#L134]),
we do not estimate the column stats once we set hive.stats.fetch.column.stats as false.Suggest
to estimate the data size by column type when {{hive.stats.fetch.column.stats}} as false like
HIVE-17634.1.patch does.  (was:  In the statistics estimation([StatsRulesProcFactory|), we
do not estimate the column stats once we set hive.stats.fetch.column.stats as false.Suggest
to estimate the data size by column type when {{hive.stats.fetch.column.stats}} as false like
HIVE-17634.1.patch does.)

> Estimate the column stats even not retrieve columns from metastore(hive.stats.fetch.column.stats
as false)
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-17634
>                 URL: https://issues.apache.org/jira/browse/HIVE-17634
>             Project: Hive
>          Issue Type: Bug
>            Reporter: liyunzhang_intel
>            Assignee: liyunzhang_intel
>         Attachments: HIVE-17634.1.patch, HIVE-17634.patch
>
>
>  In the statistics estimation([StatsRulesProcFactory|https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/optimizer/stats/annotation/StatsRulesProcFactory.java#L134]),
we do not estimate the column stats once we set hive.stats.fetch.column.stats as false.Suggest
to estimate the data size by column type when {{hive.stats.fetch.column.stats}} as false like
HIVE-17634.1.patch does.



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