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https://issues.apache.org/jira/browse/HIVE-17474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16156692#comment-16156692
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liyunzhang_intel commented on HIVE-17474:
-----------------------------------------
After HIVE-15192, the store is converted to map join.
the execution plan will be forever
{code}
TS[0]-FIL[63]-RS[3]-JOIN[6]-RS[8]-JOIN[11]-RS[41]-JOIN[44]-SEL[46]-GBY[47]-RS[48]-GBY[49]-RS[50]-GBY[51]-RS[52]-SEL[53]-PTF[54]-SEL[55]-RS[57]-SEL[58]-LIM[59]-FS[60]
TS[1]-FIL[64]-RS[5]-JOIN[6]
TS[2]-FIL[65]-RS[10]-JOIN[11]
TS[12]-FIL[68]-RS[16]-JOIN[19]-RS[20]-JOIN[23]-FIL[67]-SEL[25]-GBY[26]-RS[27]-GBY[28]-RS[29]-GBY[30]-RS[31]-SEL[32]-PTF[33]-FIL[66]-SEL[34]-GBY[39]-RS[43]-JOIN[44]
TS[13]-FIL[69]-RS[18]-JOIN[19]
TS[14]-FIL[70]-RS[22]-JOIN[23]
{code}
It is reasonable the small table store is converted to map join. so close the
jira.
> Different logical plan of same query(TPC-DS/70) with same settings
> ------------------------------------------------------------------
>
> Key: HIVE-17474
> URL: https://issues.apache.org/jira/browse/HIVE-17474
> Project: Hive
> Issue Type: Bug
> Reporter: liyunzhang_intel
>
> in
> [DS/query70|https://github.com/kellyzly/hive-testbench/blob/hive14/sample-queries-tpcds/query70.sql].
> On hive version(d3b88f6), i found that the logical plan is different in
> runtime with the same settings.
> sometimes the logical plan
> {code}
> TS[0]-FIL[63]-SEL[2]-RS[43]-JOIN[45]-RS[46]-JOIN[48]-SEL[49]-GBY[50]-RS[51]-GBY[52]-SEL[53]-RS[54]-SEL[55]-PTF[56]-SEL[57]-RS[59]-SEL[60]-LIM[61]-FS[62]
> TS[3]-FIL[64]-SEL[5]-RS[44]-JOIN[45]
> TS[6]-FIL[65]-SEL[8]-RS[39]-JOIN[41]-RS[47]-JOIN[48]
> TS[9]-FIL[67]-SEL[11]-RS[18]-JOIN[20]-RS[21]-JOIN[23]-SEL[24]-GBY[25]-RS[26]-GBY[27]-RS[29]-SEL[30]-PTF[31]-FIL[66]-SEL[32]-GBY[38]-RS[40]-JOIN[41]
> TS[12]-FIL[68]-SEL[14]-RS[19]-JOIN[20]
> TS[15]-FIL[69]-SEL[17]-RS[22]-JOIN[23]
> {code}
> TS\[6\] connects with TS\[9\] on JOIN\[41\] and connects with TS\[0\] on
> JOIN\[48\].
> sometimes
> {code}
> TS[0]-FIL[63]-RS[3]-JOIN[6]-RS[8]-JOIN[11]-RS[41]-JOIN[44]-SEL[46]-GBY[47]-RS[48]-GBY[49]-RS[50]-GBY[51]-RS[52]-SEL[53]-PTF[54]-SEL[55]-RS[57]-SEL[58]-LIM[59]-FS[60]
> TS[1]-FIL[64]-RS[5]-JOIN[6]
> TS[2]-FIL[65]-RS[10]-JOIN[11]
> TS[12]-FIL[68]-RS[16]-JOIN[19]-RS[20]-JOIN[23]-FIL[67]-SEL[25]-GBY[26]-RS[27]-GBY[28]-RS[29]-GBY[30]-RS[31]-SEL[32]-PTF[33]-FIL[66]-SEL[34]-GBY[39]-RS[43]-JOIN[44]
> TS[13]-FIL[69]-RS[18]-JOIN[19]
> TS[14]-FIL[70]-RS[22]-JOIN[23]
> {code}
> TS\[2\] connects with TS\[0\] on JOIN\[11\]
> Although TS\[2\] and TS\[6\] has different operator id, they are table store
> in the query.
> The difference causes different spark execution plan and different execution
> time. I'm very confused why there are different logical plan with same
> setting. Can anyone know where to investigate the root cause?
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