[jira] [Resolved] (HBASE-4141) Fix LRU stats message

["Lars Hofhansl (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-4141?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lars Hofhansl resolved HBASE-4141.
----------------------------------

    Resolution: Duplicate

In trunk this is fixed.
                
> Fix LRU stats message
> ---------------------
>
>                 Key: HBASE-4141
>                 URL: https://issues.apache.org/jira/browse/HBASE-4141
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>            Reporter: Lars George
>            Priority: Trivial
>              Labels: newbie
>         Attachments: LruBlockCache_HBASE_4141.patch
>
>
> Currently the DEBUG message looks like this:
> {noformat}
> 2011-07-26 04:21:52,344 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: LRU Stats: total=3.24 MB, free=391.76 MB, max=395 MB, blocks=0, accesses=118458, hits=0, hitRatio=0.00%%, cachingAccesses=0, cachingHits=0, cachingHitsRatio=�%, evictions=0, evicted=0, evictedPerRun=NaN
> {noformat}
> Note the double percent on "hitRatio", and the stray character at "cachingHitsRatio".
> The former is a added by the code in LruBlockCache.java:
> {code}
> ...
> "hitRatio=" +
>   (stats.getHitCount() == 0 ? "0" : (StringUtils.formatPercent(stats.getHitRatio(), 2) + "%, ")) +
> ...
> {code}
> The StringUtils already adds a percent sign, so the trailing one here can be dropped.
> The latter I presume is caused by the value not between 0.0 and 1.0. This should be checked and "NaN" or so displayed instead as is done for other values.

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