hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9037) LruBlockCache is too verbose at Debug level
Date Thu, 25 Jul 2013 00:47:49 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9037?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13719113#comment-13719113
] 

Jean-Daniel Cryans commented on HBASE-9037:
-------------------------------------------

I've always found them useful and they only tend to annoy devs testing loads of reads on small
heaps. On live systems you don't see it as often, and if you do then you got a pretty bad
churn problem.

Also on trunk those factors are different:

{code}
  static final float DEFAULT_MIN_FACTOR = 0.95f;
  static final float DEFAULT_ACCEPTABLE_FACTOR = 0.99f;
{code}
                
> LruBlockCache is too verbose at Debug level
> -------------------------------------------
>
>                 Key: HBASE-9037
>                 URL: https://issues.apache.org/jira/browse/HBASE-9037
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>             Fix For: 0.94.10
>
>
> From Stack on the mailing list:
> {quote}
> I see this every 4ms or so when reading.
> 21 2013-07-24 10:55:24,594 DEBUG
> org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache LRU eviction
> completed; freed=24.78 MB, total=185.13 MB, single=0 KB, multi=207.88 MB,
> memory=0.64 KB
> 20 2013-07-24 10:55:28,975 DEBUG
> org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache LRU eviction
> started; Attempting to free 24.75 MB of total=209.91 MB
> Loads of it.
> {quote}
> Should either limit the log frequency of this, or change to trace.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message