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From "Benjamin Reed (JIRA)" <j...@apache.org>
Subject [jira] Created: (ZOOKEEPER-323) Log file reuse
Date Thu, 19 Feb 2009 22:46:01 GMT
Log file reuse

                 Key: ZOOKEEPER-323
                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-323
             Project: Zookeeper
          Issue Type: Improvement
          Components: server
            Reporter: Benjamin Reed

in some benchmarks i noticed that you can get much higher throughput using preallocated files
rather than doing the grow-by-padding approach that we use. we should recycle log files that
are no longer needed. this should give us a performance boost. it will also make the purgelog
utility unnecessary. we should have a policy that we only keep X snapshots and associated
logs and reuse older log files (and probably delete the older snapshots as well since the
snapshot would be useless without the corresponding log file.)

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