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From "Yechao Chen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-14727) llap-server may case file descriptor leak in BuddyAllocator class
Date Mon, 12 Sep 2016 01:22:20 GMT

    [ https://issues.apache.org/jira/browse/HIVE-14727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15482720#comment-15482720
] 

Yechao Chen commented on HIVE-14727:
------------------------------------

There is no original failrue,I just read the llap-server code ,find this may case this suitation

> llap-server may case file descriptor leak in BuddyAllocator class
> -----------------------------------------------------------------
>
>                 Key: HIVE-14727
>                 URL: https://issues.apache.org/jira/browse/HIVE-14727
>             Project: Hive
>          Issue Type: Bug
>          Components: llap
>    Affects Versions: 2.2.0
>            Reporter: Yechao Chen
>            Assignee: Yechao Chen
>             Fix For: 2.2.0
>
>         Attachments: HIVE-14727.patch
>
>
> llap-server,the method preallocate(int) of  BuddyAllocator may case file descriptor leak
when FileChannel map allocate memory error.
> the code:
>         //here if failed
>          ByteBuffer rwbuf = rwf.getChannel().map(MapMode.READ_WRITE, 0, arenaSize);
>         // A mapping, once established, is not dependent upon the file channel that was
used to
>         // create it. delete file and hold onto the map
>        //can not close() and delete file
>         rwf.close();
>         rf.delete();



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