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Posted to dev@hive.apache.org by "Prasanth Jayachandran (Jira)" <ji...@apache.org> on 2020/05/15 22:09:00 UTC

[jira] [Created] (HIVE-23476) [LLAP] Preallocate arenas for mmap case as well

Prasanth Jayachandran created HIVE-23476:
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             Summary: [LLAP] Preallocate arenas for mmap case as well
                 Key: HIVE-23476
                 URL: https://issues.apache.org/jira/browse/HIVE-23476
             Project: Hive
          Issue Type: Bug
            Reporter: Prasanth Jayachandran
            Assignee: Prasanth Jayachandran


BuddyAllocator pre-allocation of arenas does not happen for mmap cache case. Since we are not filling up the mmap'ed buffers the upfront allocations in constructor is cheap. This can avoid lock free allocation of arenas later in the code. 



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