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Posted to dev@hbase.apache.org by "Vladimir Rodionov (JIRA)" <ji...@apache.org> on 2016/03/26 21:48:25 UTC

[jira] [Created] (HBASE-15542) Minimize garbage allocation during compaction

Vladimir Rodionov created HBASE-15542:
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             Summary: Minimize garbage allocation during compaction
                 Key: HBASE-15542
                 URL: https://issues.apache.org/jira/browse/HBASE-15542
             Project: HBase
          Issue Type: Improvement
          Components: Compaction
    Affects Versions: 2.0.0
            Reporter: Vladimir Rodionov
            Assignee: Vladimir Rodionov
             Fix For: 2.0.0


Compactions are CPU-bound, not I/O bound. We can mitigate this by increasing number of compaction threads for small and large compactions, but  excessive object allocation limits maximum number of compaction threads we can use w/o bringing down RS due to very frequent GC cycles.   
 



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