Dmitriy V. Ryaboy created HADOOP-11506:
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Summary: Configuration.get() is unnecessarily slow
Key: HADOOP-11506
URL: https://issues.apache.org/jira/browse/HADOOP-11506
Project: Hadoop Common
Issue Type: Bug
Reporter: Dmitriy V. Ryaboy
Profiling several large Hadoop jobs, we discovered that a surprising amount of
time was spent inside Configuration.get, more specifically, in regex matching
caused by the substituteVars call.
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