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From "Dev Lakhani (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-13452) HRegion warning about memstore size miscalculation is not actionable
Date Sat, 18 Apr 2015 11:13:00 GMT

     [ https://issues.apache.org/jira/browse/HBASE-13452?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Dev Lakhani updated HBASE-13452:
--------------------------------
    Description: 
During normal operation the HRegion class reports a message related to memstore flushing in
HRegion.class :

      if (!canFlush) {
        addAndGetGlobalMemstoreSize(-memstoreSize.get());
      } else if (memstoreSize.get() != 0) {
        LOG.error("Memstore size is " + memstoreSize.get());
      }

The log file is filled with lots of 

Memstore size is 558744
Memstore size is 4390632
Memstore size is 558744 
...

These message are uninformative, clog up the logs and offers no root cause nor solution. Maybe
the message needs to be more informative, changed to WARN or some further information provided.

  was:
During normal operation the HRegion class reports a message related to memstore flushing in
HRegion.class :

      if (!canFlush) {
        addAndGetGlobalMemstoreSize(-memstoreSize.get());
      } else if (memstoreSize.get() != 0) {
        LOG.error("Memstore size is " + memstoreSize.get());
      }

The log file is filled with lots of 

Memstore size is: 190192
Memstore size is: 442232
Memstore size is: 190192
...

These message are uninformative, clog up the logs and offers no root cause nor solution. Maybe
the message needs to be more informative, changed to WARN or some further information provided.


> HRegion warning about memstore size miscalculation is not actionable
> --------------------------------------------------------------------
>
>                 Key: HBASE-13452
>                 URL: https://issues.apache.org/jira/browse/HBASE-13452
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 1.0.0
>            Reporter: Dev Lakhani
>            Priority: Blocker
>             Fix For: 2.0.0, 1.1.0, 1.0.2
>
>
> During normal operation the HRegion class reports a message related to memstore flushing
in HRegion.class :
>       if (!canFlush) {
>         addAndGetGlobalMemstoreSize(-memstoreSize.get());
>       } else if (memstoreSize.get() != 0) {
>         LOG.error("Memstore size is " + memstoreSize.get());
>       }
> The log file is filled with lots of 
> Memstore size is 558744
> Memstore size is 4390632
> Memstore size is 558744 
> ...
> These message are uninformative, clog up the logs and offers no root cause nor solution.
Maybe the message needs to be more informative, changed to WARN or some further information
provided.



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