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