zhengruifeng commented on code in PR #53161:
URL: https://github.com/apache/spark/pull/53161#discussion_r2674539569
##########
python/pyspark/worker.py:
##########
@@ -3304,8 +3305,12 @@ def main(infile, outfile):
sys.exit(-1)
start_faulthandler_periodic_traceback()
- # Use the local timezone to convert the timestamp
- tz = datetime.datetime.now().astimezone().tzinfo
+ tzname = os.environ.get("SPARK_SESSION_LOCAL_TIMEZONE", None)
Review Comment:
> It can be enabled by default, but when disabled, the behavior should be
the original behavior.
@ueshin how to disable a runtime config with default value? it still returns
the default value after `conf.unset`
```
In [1]: spark.conf.get("spark.sql.session.timeZone")
Out[1]: 'Asia/Shanghai'
In [2]: spark.conf.unset("spark.sql.session.timeZone")
In [3]: spark.conf.get("spark.sql.session.timeZone")
Out[3]: 'Asia/Shanghai'
In [4]: spark.conf.set("spark.sql.session.timeZone", "Asia/Tokyo")
In [5]: spark.conf.get("spark.sql.session.timeZone")
Out[5]: 'Asia/Tokyo'
In [6]: spark.conf.unset("spark.sql.session.timeZone")
In [7]: spark.conf.get("spark.sql.session.timeZone")
Out[7]: 'Asia/Shanghai'
```
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