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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-14172) LLAP: force evict blocks by size to handle memory fragmentation
Date Wed, 06 Jul 2016 21:28:11 GMT
Sergey Shelukhin created HIVE-14172:
---------------------------------------

             Summary: LLAP: force evict blocks by size to handle memory fragmentation
                 Key: HIVE-14172
                 URL: https://issues.apache.org/jira/browse/HIVE-14172
             Project: Hive
          Issue Type: Bug
            Reporter: Sergey Shelukhin
            Assignee: Sergey Shelukhin


In the long run, we should replace buddy allocator with a better scheme. For now do a workaround
for fragmentation that cannot be easily resolved. It's still not perfect but works for practical
 ORC cases, where we have the default size and smaller blocks, rather than large allocations
having trouble.



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