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Posted to hdfs-dev@hadoop.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2010/03/06 08:07:27 UTC

[jira] Created: (HDFS-1028) INode.getPathNames could split more efficiently

INode.getPathNames could split more efficiently
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                 Key: HDFS-1028
                 URL: https://issues.apache.org/jira/browse/HDFS-1028
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: name-node
            Reporter: Todd Lipcon
            Priority: Minor


INode.getPathnames uses String.split(String) which actually uses the full Java regex implementation. Since we're always splitting on a single char, we could implement a faster one like StringUtils.split() (except without the escape character). This takes a significant amount of CPU during FSImage loading so should be a worthwhile speedup.

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