[ARROW-14040] [C++] Spurious test failure in ScanNode.MinimalGroupedAggEndToEnd

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 6.0.0
• Component/s: C++
• Labels: pull-request-available query-engine
• External issue URL: https://github.com/apache/arrow/issues/29637
• Assignee: David Li
• Reporter: David Li
• Created: 20/Sep/21 12:29
• Updated: 11/Jan/23 08:37
• Resolved: 21/Sep/21 11:49

Description

https://github.com/ursacomputing/crossbow/runs/3648596923

The test assumes a certain order, but there is no guarantee of output order. (We should probably locally run these tests with constrained resources to try to stress them and find other instances of this assumption.)

[ RUN      ] ScanNode.MinimalGroupedAggEndToEnd
/arrow/cpp/src/arrow/testing/gtest_util.cc:514: Failure
Failed
Unequal at absolute position 3@@ -0, +0 @@
+12
@@ -2, +3 @@
-12
Expected:
  [
    12,
    4,
    40
  ]
Actual:
  [
    4,
    40,
    12
  ]
[  FAILED  ] ScanNode.MinimalGroupedAggEndToEnd (4 ms)
[----------] 8 tests from ScanNode (23 ms total) 

Issue Links

• is caused by: ARROW-14009 [C++] Ensure SourceNode truly feeds batches to plan in parallel
• links to: GitHub Pull Request #11190