You are viewing a plain text version of this content. The canonical link for it is here.

Posted to common-issues@hadoop.apache.org by "Andrew Wang (JIRA)" <ji...@apache.org> on 2013/11/20 22:58:35 UTC

[jira] [Created] (HADOOP-10120) Additional sliding window metrics

Andrew Wang created HADOOP-10120:
------------------------------------

             Summary: Additional sliding window metrics
                 Key: HADOOP-10120
                 URL: https://issues.apache.org/jira/browse/HADOOP-10120
             Project: Hadoop Common
          Issue Type: New Feature
          Components: metrics
    Affects Versions: 2.2.0
            Reporter: Andrew Wang
            Assignee: Andrew Wang


For HDFS-5350 we'd like to report the last few fsimage transfer times as a health metric. This would mean (for example) a sliding window of the last 10 transfer times, when it was last updated, the total count. It'd be nice to have a metrics class that did this.

It'd also be interesting to have some kind of time-based sliding window for statistics like counts and averages. This would let us answer questions like "how many RPCs happened in the last 10s? minute? 5 minutes? 10 minutes?". Commutative metrics like counts and averages are easy to aggregate in this fashion.



--
This message was sent by Atlassian JIRA
(v6.1#6144)