Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/2743#discussion_r19051269
--- Diff: python/pyspark/conf.py ---
@@ -57,6 +57,22 @@
__all__ = ['SparkConf']
+def _parse_memory(s):
+ """
+ Parse a memory string in the format supported by Java (e.g. 1g, 200m)
and
+ return the value in MB
+
+ >>> _parse_memory("256m")
+ 256
+ >>> _parse_memory("2g")
+ 2048
+ """
+ units = {'g': 1024, 'm': 1, 't': 1 << 20, 'k': 1.0 / 1024}
+ if s[-1] not in units:
+ raise ValueError("invalid format: " + s)
+ return int(float(s[:-1]) * units[s[-1].lower()])
+
+
--- End diff --
This is used by two modules, and related to conf, so it's better to put in
pyspark.conf.
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