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From "Craig Macdonald (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-3753) metrics: FileContext support overwrite mode
Date Sun, 13 Jul 2008 16:41:31 GMT
metrics: FileContext support overwrite mode

                 Key: HADOOP-3753
                 URL: https://issues.apache.org/jira/browse/HADOOP-3753
             Project: Hadoop Core
          Issue Type: Improvement
          Components: metrics
            Reporter: Craig Macdonald
            Priority: Minor

FileContext currently continually appends to the metrics log file(s), generating an ever lengthening

In some scenarios, it would be useful to simply write the current statistics to the file once
every period, then overwrite the file for the next period.

For instance, this could be useful if an external application parsed the metrics output -
e.g. Cacti to create realtime graphs.

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