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From "zhihai xu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-12348) MetricsSystemImpl creates MetricsSourceAdapter with wrong time unit parameter.
Date Sat, 29 Aug 2015 02:46:45 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-12348?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

zhihai xu updated HADOOP-12348:
-------------------------------
    Attachment: HADOOP-12348.001.patch

> MetricsSystemImpl creates MetricsSourceAdapter with wrong time unit parameter.
> ------------------------------------------------------------------------------
>
>                 Key: HADOOP-12348
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12348
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: metrics
>            Reporter: zhihai xu
>            Assignee: zhihai xu
>         Attachments: HADOOP-12348.000.patch, HADOOP-12348.001.patch
>
>
> MetricsSystemImpl creates MetricsSourceAdapter with wrong time unit parameter. MetricsSourceAdapter
expects time unit millisecond  for jmxCacheTTL but MetricsSystemImpl  passes time unit second
to MetricsSourceAdapter constructor.
> {code}
>         jmxCacheTS = Time.now() + jmxCacheTTL;
>   /**
>    * Current system time.  Do not use this to calculate a duration or interval
>    * to sleep, because it will be broken by settimeofday.  Instead, use
>    * monotonicNow.
>    * @return current time in msec.
>    */
>   public static long now() {
>     return System.currentTimeMillis();
>   }
> {code}



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