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From "Hiroshi Ikeda (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-7437) Improve CompactSelection
Date Wed, 26 Dec 2012 03:26:12 GMT

     [ https://issues.apache.org/jira/browse/HBASE-7437?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hiroshi Ikeda updated HBASE-7437:
---------------------------------

    Status: Patch Available  (was: Open)
    
> Improve CompactSelection
> ------------------------
>
>                 Key: HBASE-7437
>                 URL: https://issues.apache.org/jira/browse/HBASE-7437
>             Project: HBase
>          Issue Type: Improvement
>          Components: Compaction
>            Reporter: Hiroshi Ikeda
>            Priority: Minor
>         Attachments: HBASE-7437.patch
>
>
> 1. Using AtomicLong makes CompactSelection simple and improve its performance.
> 2. There are unused fields and methods.
> 3. The fields should be private.
> 4. Assertion in the method finishRequest seems wrong:
> {code}
>   public void finishRequest() {
>     if (isOffPeakCompaction) {
>       long newValueToLog = -1;
>       synchronized(compactionCountLock) {
>         assert !isOffPeakCompaction : "Double-counting off-peak count for compaction";
> {code}
> The above assertion seems almost always false.

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