[jira] [Updated] (HBASE-25642) Fix or stop warning about already cached block

["Andrew Kyle Purtell (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-25642?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Kyle Purtell updated HBASE-25642:
----------------------------------------
    Fix Version/s:     (was: 2.4.4)
                   2.4.5

> Fix or stop warning about already cached block
> ----------------------------------------------
>
>                 Key: HBASE-25642
>                 URL: https://issues.apache.org/jira/browse/HBASE-25642
>             Project: HBase
>          Issue Type: Improvement
>          Components: BlockCache, Operability, regionserver
>    Affects Versions: 2.3.0
>            Reporter: Nick Dimiduk
>            Priority: Major
>             Fix For: 3.0.0-alpha-1, 2.5.0, 2.4.5
>
>
> Our logs have as a fairly common occurrence:
> {noformat}
> 2021-03-05 22:24:31,034 WARN  [StoreFileOpener-foo-1] hfile.BlockCacheUtil: Caching an already cached block: blah.bub. This is harmless and can happen in rare cases (see HBASE-8547)
> {noformat}
> If this is really harmless, why do we log? If it's not actually harmless, let's take another pass at fixing this situation.



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