[jira] [Assigned] (HIVE-24515) Analyze table job can be skipped when stats populated are already accurate

["mahesh kumar behera (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-24515?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

mahesh kumar behera reassigned HIVE-24515:
------------------------------------------

    Assignee: mahesh kumar behera

> Analyze table job can be skipped when stats populated are already accurate
> --------------------------------------------------------------------------
>
>                 Key: HIVE-24515
>                 URL: https://issues.apache.org/jira/browse/HIVE-24515
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Rajesh Balamohan
>            Assignee: mahesh kumar behera
>            Priority: Major
>
> For non-partitioned tables, stats detail should be present in table level,
> e.g
> {noformat}
> COLUMN_STATS_ACCURATE={"BASIC_STATS":"true","COLUMN_STATS":{"d_current_day":"true"... }}
>   {noformat}
> For partitioned tables, stats detail should be present in partition level,
> {noformat}
> store_sales(ss_sold_date_sk=2451819)
> {totalSize=0, numRows=0, rawDataSize=0, COLUMN_STATS_ACCURATE={"BASIC_STATS":"true","COLUMN_STATS":{"ss_addr_sk":"true"....}}
>  
>  {noformat}
> When stats populated are already accurate, {{analyze table tn compute statistics for columns}} should skip launching the job.
>  
> For ACID tables, stats are auto computed and it can skip computing stats again when stats are accurate.
>  
>  



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