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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-9731) updatesBlockedSeconds RegionServer metric should not be a histogram
Date Wed, 09 Oct 2013 05:03:43 GMT
Lars Hofhansl created HBASE-9731:
------------------------------------

             Summary: updatesBlockedSeconds RegionServer metric should not be a histogram
                 Key: HBASE-9731
                 URL: https://issues.apache.org/jira/browse/HBASE-9731
             Project: HBase
          Issue Type: Bug
            Reporter: Lars Hofhansl
            Assignee: Lars Hofhansl
             Fix For: 0.94.13


I just noticed that updatesBlockedSeconds is declared as a histogram (in 0.94), which makes
little sense (neither mean, nor any percentiles are useful, as it is an every increasing number).
This metric measures the total time the region server has blocked writes due to flushes that
could not proceed due to too many store files... In that it should be a number. Unless there
are objections I will make this so.

Also, it looks like this metric was lost in 0.96 ([~eclark], [~stack], fyi).




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