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GH-41121: [C++] Fix: left anti join filter empty rows. #41122

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merged 3 commits into from
Apr 15, 2024

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Light-City
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@Light-City Light-City commented Apr 10, 2024

Rationale for this change

Since the left anti filter implementation is based on the left semi filter, and an assertion error occurs when the left semi filter rows are empty, this problem should be fixed.

What changes are included in this PR?

swiss_join.cc and hash_join_node_test.cc

Are these changes tested?

Yes

Are there any user-facing changes?

No

@Light-City Light-City requested a review from westonpace as a code owner April 10, 2024 08:30
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⚠️ GitHub issue #41121 has been automatically assigned in GitHub to PR creator.

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I don’t know why lint ci hangs without any prompt?

@ZhangHuiGui
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I don’t know why lint ci hangs without any prompt?

Seems you need to format your codes:

 TEST(HashJoin, FilterEmptyRows) {
   BatchesWithSchema input_left;
-  input_left.batches = {ExecBatchFromJSON({int32(), utf8(), int32()}, R"([[2, "Jarry", 28]])")};
+  input_left.batches = {
+      ExecBatchFromJSON({int32(), utf8(), int32()}, R"([[2, "Jarry", 28]])")};

@Light-City
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I don’t know why lint ci hangs without any prompt?

Seems you need to format your codes:

 TEST(HashJoin, FilterEmptyRows) {
   BatchesWithSchema input_left;
-  input_left.batches = {ExecBatchFromJSON({int32(), utf8(), int32()}, R"([[2, "Jarry", 28]])")};
+  input_left.batches = {
+      ExecBatchFromJSON({int32(), utf8(), int32()}, R"([[2, "Jarry", 28]])")};

thanks, I changed.

@github-actions github-actions bot added awaiting committer review Awaiting committer review and removed awaiting review Awaiting review labels Apr 10, 2024
@Light-City
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test_table.py failed .The test failure has nothing to do with my PR, it seems to be asof join

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This is a great catch, thank you!

One minor suggestion though.

cpp/src/arrow/acero/swiss_join.cc Outdated Show resolved Hide resolved
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test_table.py failed .The test failure has nothing to do with my PR, it seems to be asof join

Yeah, seems unrelated to this PR. Could be the same as #41149.

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+1

@zanmato1984
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We should wait for some committer to approve and merge. Thank you again for the fix!

cc @westonpace

@Light-City
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We should wait for some committer to approve and merge. Thank you again for the fix!

cc @westonpace

Okay, thank you

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mapleFU commented Apr 11, 2024

@zanmato1984 should this better in 16.0?

@mapleFU mapleFU requested a review from bkietz April 11, 2024 16:14
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@zanmato1984 should this better in 16.0?

Yes, it would be nice to have it in 16.0. The condition to trigger this bug is not very rare: left-semi join with no rows matched by key meanwhile filter referring left table columns only.

cc @raulcd . If we have a chance, please consider including this PR in 16.0. Thank you.

@mapleFU mapleFU added the Priority: Blocker Marks a blocker for the release label Apr 12, 2024
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mapleFU commented Apr 12, 2024

I've change this patch to blocker

@pitrou pitrou removed the Priority: Blocker Marks a blocker for the release label Apr 15, 2024
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pitrou commented Apr 15, 2024

While this would indeed be nice to have, I've removed the "Blocker" label since this doesn't seem to be a regression.

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pitrou commented Apr 15, 2024

Rebased on git main for CI.

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pitrou commented Apr 15, 2024

@github-actions crossbow submit -g cpp

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This seems ok on the face of it, but I can't vouch for the correctness.

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Revision: 5d59164

Submitted crossbow builds: ursacomputing/crossbow @ actions-63062f6aac

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@pitrou pitrou merged commit 924fbec into apache:main Apr 15, 2024
35 of 36 checks passed
@pitrou pitrou removed the awaiting committer review Awaiting committer review label Apr 15, 2024
raulcd pushed a commit that referenced this pull request Apr 15, 2024
### Rationale for this change

Since the left anti filter implementation is based on the left semi filter, and an assertion error occurs when the left semi filter rows are empty, this problem should be fixed.

### What changes are included in this PR?

swiss_join.cc and hash_join_node_test.cc

### Are these changes tested?
Yes

### Are there any user-facing changes?
No

* GitHub Issue: #41121

Lead-authored-by: light-city <455954986@qq.com>
Co-authored-by: Antoine Pitrou <pitrou@free.fr>
Signed-off-by: Antoine Pitrou <antoine@python.org>
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After merging your PR, Conbench analyzed the 7 benchmarking runs that have been run so far on merge-commit 924fbec.

There were no benchmark performance regressions. 🎉

The full Conbench report has more details. It also includes information about 7 possible false positives for unstable benchmarks that are known to sometimes produce them.

tolleybot pushed a commit to tmct/arrow that referenced this pull request May 2, 2024
…41122)

### Rationale for this change

Since the left anti filter implementation is based on the left semi filter, and an assertion error occurs when the left semi filter rows are empty, this problem should be fixed.

### What changes are included in this PR?

swiss_join.cc and hash_join_node_test.cc

### Are these changes tested?
Yes

### Are there any user-facing changes?
No

* GitHub Issue: apache#41121

Lead-authored-by: light-city <455954986@qq.com>
Co-authored-by: Antoine Pitrou <pitrou@free.fr>
Signed-off-by: Antoine Pitrou <antoine@python.org>
vibhatha pushed a commit to vibhatha/arrow that referenced this pull request May 25, 2024
…41122)

### Rationale for this change

Since the left anti filter implementation is based on the left semi filter, and an assertion error occurs when the left semi filter rows are empty, this problem should be fixed.

### What changes are included in this PR?

swiss_join.cc and hash_join_node_test.cc

### Are these changes tested?
Yes

### Are there any user-facing changes?
No

* GitHub Issue: apache#41121

Lead-authored-by: light-city <455954986@qq.com>
Co-authored-by: Antoine Pitrou <pitrou@free.fr>
Signed-off-by: Antoine Pitrou <antoine@python.org>
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5 participants