[GitHub] [arrow] rtpsw commented on pull request #34392: GH-34391: [C++] Future as-of-join-node hangs on distant times

Sun, 23 Apr 2023 00:19:44 -0700 


rtpsw commented on PR #34392:
URL: https://github.com/apache/arrow/pull/34392#issuecomment-1518977917

   There are two failed C++ CI jobs, and in both the actual output (which is 
different than the expected one) is not in agreement with the produced batches 
appearing in the debug messages - see details below.
   
   Diff for [`ARM Ubuntu 20.04 C++` CI 
job](https://github.com/apache/arrow/actions/runs/4776544464/jobs/8491645558?pr=34392):
   ```
   Unequal at absolute position 3
   
   @@ -2, +2 @@
   -null
   +1970-01-01 00:00:00.000012
   Expected:
     [
       1970-01-01 00:00:00.000010,
       null,
       1970-01-01 00:00:00.000012
     ]
   Actual:
     [
       1970-01-01 00:00:00.000010,
       null,
       null
     ]
   ```
   whereas the batches produced are:
   ```
   AsofjoinNode(0xaaaaddd73bd0): produce batch 0:
   time:   [
       00:00:00.000
     ]
   key2:   [
       "0"
     ]
   key:   [
       "1"
     ]
   l_v0:   [
       00:00:00.000001
     ]
   r0_v0:   [
       1970-01-01 00:00:00.000000010
     ]
   r1_v0:   [
       100
     ]
   ...
   AsofjoinNode(0xaaaaddd73bd0): produce batch 1:
   time:   [
       00:00:01.000
     ]
   key2:   [
       "0"
     ]
   key:   [
       "2"
     ]
   l_v0:   [
       00:00:00.000002
     ]
   r0_v0:   [
       null
     ]
   r1_v0:   [
       null
     ]
   ...
   AsofjoinNode(0xaaaaddd73bd0): produce batch 2:
   time:   [
       00:00:02.000
     ]
   key2:   [
       "0"
     ]
   key:   [
       "1"
     ]
   l_v0:   [
       00:00:00.000003
     ]
   r0_v0:   [
       1970-01-01 00:00:00.000000012
     ]
   r1_v0:   [
       102
     ]
   ```
   
   Diff for [`AMD64 macOS 12 C++` CI 
job](https://github.com/apache/arrow/actions/runs/4776544464/jobs/8491645668?pr=34392):
   ```
   Unequal at absolute position 3
   
   @@ -1, +1 @@
   -11
   +null
   Expected:
     [
       10,
       null,
       12
     ]
   Actual:
     [
       10,
       11,
       12
     ]
   ```
   whereas the batches produced are:
   ```
   AsofjoinNode(0x7f7b12021350): produce batch 0:
   time:   [
       0
     ]
   key2:   [
       0
     ]
   key:   [
       1
     ]
   l_v0:   [
       31
     ]
   r0_v0:   [
       10
     ]
   r1_v0:   [
       1970-01-01 00:01:40
     ]
   ...
   AsofjoinNode(0x7f7b12021350): produce batch 1:
   time:   [
       1000
     ]
   key2:   [
       0
     ]
   key:   [
       2
     ]
   l_v0:   [
       32
     ]
   r0_v0:   [
       null
     ]
   r1_v0:   [
       null
     ]
   ...
   AsofjoinNode(0x7f7b12021350): produce batch 2:
   time:   [
       2000
     ]
   key2:   [
       0
     ]
   key:   [
       1
     ]
   l_v0:   [
       33
     ]
   r0_v0:   [
       12
     ]
   r1_v0:   [
       1970-01-01 00:01:42
     ]
   ```


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