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Posted to issues@hbase.apache.org by "Nick Dimiduk (Jira)" <ji...@apache.org> on 2021/03/05 22:38:00 UTC

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

Nick Dimiduk created HBASE-25642:
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             Summary: 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, regionserver
    Affects Versions: 2.3.0
            Reporter: Nick Dimiduk


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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