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List:       hadoop-dev
Subject:    [jira] [Created] (HADOOP-16267) Performance gain if you use replace() instead of replaceAll() for re
From:       "bd2019us (JIRA)" <jira () apache ! org>
Date:       2019-04-21 1:59:00
Message-ID: JIRA.13229250.1555811885000.111030.1555811940044 () Atlassian ! JIRA
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bd2019us created HADOOP-16267:
---------------------------------

             Summary: Performance gain if you use replace() instead of replaceAll() \
for replacing patterns that do not use a regex   Key: HADOOP-16267
                 URL: https://issues.apache.org/jira/browse/HADOOP-16267
             Project: Hadoop Common
          Issue Type: Improvement
            Reporter: bd2019us


Performance gain if you use replace() instead of replaceAll() for replacing patterns \
that do not use a regex. This happens because replace() does not need to compile the \
regex pattern like replaceAll() does.

Affected files:
* hadoop-common/hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/mapred/CopyCommitter.java
                
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/state/Graph.java
                
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/state/Graph.java






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