[SPARK-57271][PYTHON] Add capability to print locals in traceback for Python UDF#56336
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[SPARK-57271][PYTHON] Add capability to print locals in traceback for Python UDF#56336gaogaotiantian wants to merge 2 commits into
gaogaotiantian wants to merge 2 commits into
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HyukjinKwon
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Jun 8, 2026
gaogaotiantian
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Jun 12, 2026
… Python UDF
### What changes were proposed in this pull request?
A new configuration `spark.sql.execution.pyspark.udf.tracebackWithLocals.enabled` is introduced for UDF tracebacks to include local variable values.
```
pyspark.errors.exceptions.captured.PythonException: An exception was thrown from the Python worker:
Traceback (most recent call last):
File "/Users/tian.gao/programs/spark/python/example.py", line 10, in f
return g(y)
^^^^
x = 1
y = 0
File "/Users/tian.gao/programs/spark/python/example.py", line 6, in g
return 1 / y
~~^~~
y = 0
```
### Why are the changes needed?
This is very helpful for UDF debugging - it includes all the local variables in each frame for users to understand the crash site. This is off by default so the original behavior is kept.
### Does this PR introduce _any_ user-facing change?
Yes, opt-in configuration to enable extra information in the UDF traceback.
### How was this patch tested?
Some local manual tests were done. Two test cases were added. Pending CI.
### Was this patch authored or co-authored using generative AI tooling?
Tests were generated by Claude Code (Opus 4.8).
Closes #56336 from gaogaotiantian/exception-with-locals.
Authored-by: Tian Gao <gaogaotiantian@hotmail.com>
Signed-off-by: Tian Gao <gaogaotiantian@hotmail.com>
(cherry picked from commit bef8152)
Signed-off-by: Tian Gao <gaogaotiantian@hotmail.com>
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Author
|
Merged to master and branch-4.x. |
iemejia
pushed a commit
to iemejia/spark
that referenced
this pull request
Jun 17, 2026
… Python UDF
### What changes were proposed in this pull request?
A new configuration `spark.sql.execution.pyspark.udf.tracebackWithLocals.enabled` is introduced for UDF tracebacks to include local variable values.
```
pyspark.errors.exceptions.captured.PythonException: An exception was thrown from the Python worker:
Traceback (most recent call last):
File "/Users/tian.gao/programs/spark/python/example.py", line 10, in f
return g(y)
^^^^
x = 1
y = 0
File "/Users/tian.gao/programs/spark/python/example.py", line 6, in g
return 1 / y
~~^~~
y = 0
```
### Why are the changes needed?
This is very helpful for UDF debugging - it includes all the local variables in each frame for users to understand the crash site. This is off by default so the original behavior is kept.
### Does this PR introduce _any_ user-facing change?
Yes, opt-in configuration to enable extra information in the UDF traceback.
### How was this patch tested?
Some local manual tests were done. Two test cases were added. Pending CI.
### Was this patch authored or co-authored using generative AI tooling?
Tests were generated by Claude Code (Opus 4.8).
Closes apache#56336 from gaogaotiantian/exception-with-locals.
Authored-by: Tian Gao <gaogaotiantian@hotmail.com>
Signed-off-by: Tian Gao <gaogaotiantian@hotmail.com>
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What changes were proposed in this pull request?
A new configuration
spark.sql.execution.pyspark.udf.tracebackWithLocals.enabledis introduced for UDF tracebacks to include local variable values.Why are the changes needed?
This is very helpful for UDF debugging - it includes all the local variables in each frame for users to understand the crash site. This is off by default so the original behavior is kept.
Does this PR introduce any user-facing change?
Yes, opt-in configuration to enable extra information in the UDF traceback.
How was this patch tested?
Some local manual tests were done. Two test cases were added. Pending CI.
Was this patch authored or co-authored using generative AI tooling?
Tests were generated by Claude Code (Opus 4.8).