Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/22085#discussion_r209835246
--- Diff: python/pyspark/taskcontext.py ---
@@ -95,3 +95,92 @@ def getLocalProperty(self, key):
Get a local property set upstream in the driver, or None if it is
missing.
"""
return self._localProperties.get(key, None)
+
+
+class BarrierTaskContext(TaskContext):
+
+ """
+ .. note:: Experimental
+
+ A TaskContext with extra info and tooling for a barrier stage. To
access the BarrierTaskContext
+ for a running task, use:
+ L{BarrierTaskContext.get()}.
+
+ .. versionadded:: 2.4.0
+ """
+
+ _barrierContext = None
+
+ def __init__(self):
+ """Construct a BarrierTaskContext, use get instead"""
+ pass
--- End diff --
I would throw an exception BTW if this method should rather be banned
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