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@Gabriel39 Gabriel39 commented Oct 11, 2024

Proposed changes

pick #41292 #41350 #41555 #41589 #41592

apache#41292)

Consider 3 pipelines in this fragment (... -> join -> shuffle) :
pipeline 0 : `... -> local exchange sink`
pipeline 1 : `... -> join build (INNER JOIN)`
pipeline 2 : `local exchange source -> join probe (INNER JOIN) -> data
stream sender `

Assume the JoinBuild returned 0 rows, join probe can finish directly
once join build finished and do not need to wait for the `local exchange
sink` finished. In this case, if pipeline 0 is blocked by a dependency
for a long time, pipeline 2 should notify pipeline 0 to finish.
…e#41555)

For plan `local exchange (hash shuffle) -> union -> colocated agg`, we
must ensure local exchange use the same hash algorithm as MPP shuffling.

This problem is covered by our test cases but only can be reproduced on
multiple BEs so no case is added in this PR.
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run buildall

@Gabriel39 Gabriel39 changed the title Pick 1011 [branch-2.1](pick) pick 5 commits Oct 11, 2024
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clang-tidy review says "All clean, LGTM! 👍"

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TeamCity be ut coverage result:
Function Coverage: 36.02% (9339/25926)
Line Coverage: 27.60% (76699/277879)
Region Coverage: 26.41% (39397/149193)
Branch Coverage: 23.20% (20049/86430)
Coverage Report: http://coverage.selectdb-in.cc/coverage/89a022e22fbe082041ed95cb166de07561adb6b8_89a022e22fbe082041ed95cb166de07561adb6b8/report/index.html

@Gabriel39 Gabriel39 closed this Oct 16, 2024
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2 participants