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Posted to issues@hive.apache.org by "Sergey Shelukhin (JIRA)" <ji...@apache.org> on 2016/07/06 21:30:11 UTC

[jira] [Updated] (HIVE-14172) LLAP: force evict blocks by size to handle memory fragmentation

     [ https://issues.apache.org/jira/browse/HIVE-14172?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sergey Shelukhin updated HIVE-14172:
------------------------------------
    Attachment: HIVE-14172.patch

[~gopalv] can you take a look?

> 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
>         Attachments: HIVE-14172.patch
>
>
> 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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