[jira] [Updated] (ZOOKEEPER-1015) DateFormat.getDateTimeInstance() is very expensive, we can cache it to improve performance

["Patrick Hunt (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-1015?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Patrick Hunt updated ZOOKEEPER-1015:
------------------------------------

    Labels: newbie  (was: )

> DateFormat.getDateTimeInstance() is very expensive, we can cache it to improve performance
> ------------------------------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-1015
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1015
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: server
>    Affects Versions: 3.3.2
>            Reporter: Xiaoming Shi
>              Labels: newbie
>
> In the file
> {noformat} 
> ./zookeeper-3.3.2/src/java/main/org/apache/zookeeper/server/PurgeTxnLog.java line:103
> {noformat}
> DateFormat.getDateTimeInstance() is called many times in the for loop. We can cache the result and improve the performance
> This is similar to the Apache bug https://issues.apache.org/bugzilla/show_bug.cgi?id=48778
> Similar code can be found:
> {noformat}
> ./zookeeper-3.3.2/src/java/main/org/apache/zookeeper/server/TraceFormatter.java
> ./zookeeper-3.3.2/src/java/main/org/apache/zookeeper/server/LogFormatter.java
> {noformat}



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