[ http://issues.apache.org/jira/browse/HADOOP-844?page=comments#action_12460553 ] Hadoop QA commented on HADOOP-844: ----------------------------------
+1, because http://issues.apache.org/jira/secure/attachment/12347694/hadoop-844.patch applied and successfully tested against trunk revision r489489. > Metrics messages are sent on a fixed-delay schedule instead of a fixed-rate > schedule > ------------------------------------------------------------------------------------ > > Key: HADOOP-844 > URL: http://issues.apache.org/jira/browse/HADOOP-844 > Project: Hadoop > Issue Type: Bug > Components: metrics > Reporter: David Bowen > Priority: Minor > Attachments: hadoop-844.patch > > > This potentially affects all metrics implementation packages which use a > server that expects data to be sent at a particular rate. It means that with > counter metrics you will see a spurious periodic dip in the metric, because > the rate at which metrics are sent is not quite keeping up with what the > server expects. > The fix is trivial. In org.apache.hadoop.metrics.spi.AbstractMetricsContext, > the call to Timer.schedule should be changes to Timer.scheduleAtFixedRate > (which takes the same arguments). -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
