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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Work logged] (HIVE-22003) Shared work optimizer may leave semijoin branches in plan that are not used
Date Mon, 22 Jul 2019 23:08:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-22003?focusedWorklogId=280686&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-280686
]

ASF GitHub Bot logged work on HIVE-22003:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 22/Jul/19 23:07
            Start Date: 22/Jul/19 23:07
    Worklog Time Spent: 10m 
      Work Description: jcamachor commented on pull request #729: HIVE-22003
URL: https://github.com/apache/hive/pull/729#discussion_r306069305
 
 

 ##########
 File path: ql/src/test/results/clientpositive/perf/tez/constraints/query32.q.out
 ##########
 @@ -115,7 +115,7 @@ Stage-0
                               Select Operator [SEL_114] (rows=285116600 width=119)
                                 Output:["_col0","_col1","_col2"]
                                 Filter Operator [FIL_112] (rows=285116600 width=119)
-                                  predicate:(cs_ext_discount_amt is not null and cs_sold_date_sk
is not null)
+                                  predicate:(cs_ext_discount_amt is not null and cs_sold_date_sk
is not null and cs_item_sk BETWEEN DynamicValue(RS_28_item_i_item_sk_min) AND DynamicValue(RS_28_item_i_item_sk_max)
and in_bloom_filter(cs_item_sk, DynamicValue(RS_28_item_i_item_sk_bloom_filter)))
 
 Review comment:
   That the SJ is not there will not lead to incorrect results, but can lead to a performance
penalty.
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 280686)
    Time Spent: 0.5h  (was: 20m)

> Shared work optimizer may leave semijoin branches in plan that are not used
> ---------------------------------------------------------------------------
>
>                 Key: HIVE-22003
>                 URL: https://issues.apache.org/jira/browse/HIVE-22003
>             Project: Hive
>          Issue Type: Bug
>          Components: Physical Optimizer
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: HIVE-22003.01.patch, HIVE-22003.01.patch, HIVE-22003.patch
>
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> This may happen only when the TS are the only operators that are shared. Repro attached
in q file.



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