HyukjinKwon commented on a change in pull request #23954:
[SPARK-27041][PySpark] Use imap() for python 2.x to resolve oom issue
URL: https://github.com/apache/spark/pull/23954#discussion_r263971653
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File path: python/pyspark/worker.py
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@@ -45,6 +45,8 @@
if sys.version >= '3':
basestring = str
+else:
+ from itertools import imap as map # use iterator map by default
Review comment:
Yes, I think we can test like that.
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