HyukjinKwon commented on a change in pull request #24898: [SPARK-22340][PYTHON]
Add a mode to pin Python thread into JVM's
URL: https://github.com/apache/spark/pull/24898#discussion_r339882917
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File path: python/pyspark/context.py
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@@ -1010,13 +1010,42 @@ def setJobGroup(self, groupId, description,
interruptOnCancel=False):
ensure that the tasks are actually stopped in a timely manner, but is
off by default due
to HDFS-1208, where HDFS may respond to Thread.interrupt() by marking
nodes as dead.
"""
+ warnings.warn(
Review comment:
I don't know yet because this job group things (with non-pinned mode) work
kind of fine in a single thread (without multiple threads). We might have to
detect if the current thread is child thread (by checking if current thread is
the main thread) .. but I think it will miss some corner cases ..
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