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From "Jean-Daniel Cryans (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-5706) "Dropping fs latency stats since buffer is full" spam
Date Tue, 03 Apr 2012 18:58:25 GMT
"Dropping fs latency stats since buffer is full" spam

                 Key: HBASE-5706
                 URL: https://issues.apache.org/jira/browse/HBASE-5706
             Project: HBase
          Issue Type: Improvement
            Reporter: Jean-Daniel Cryans
            Priority: Minor
             Fix For: 0.94.0, 0.96.0

I see tons of this while running tests (note that it's a WARN):

2012-04-03 18:54:47,172 WARN org.apache.hadoop.hbase.io.hfile.HFile: Dropping fs latency stats
since buffer is full

While the code says this:

  // we don't want to fill up the logs with this message, so only log it 
  // once every 30 seconds at most
  // I also want to avoid locks on the 'critical path' (the common case will be
  // uncontended) - hence the CAS
  private static void logDroppedLatencyStat() {

It doesn't seem like this message is actionnable and even though it's printed "only" every
30 seconds it's still very spammy.

We should get rid of it or make it more useful (I don't know which).

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