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https://issues.apache.org/jira/browse/KUDU-3252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17803378#comment-17803378
 ] 

ASF subversion and git services commented on KUDU-3252:
-------------------------------------------------------

Commit 2810e635cc72aa5279a9dc787b6becad6e0098a9 in kudu's branch 
refs/heads/master from Mahesh Reddy
[ https://gitbox.apache.org/repos/asf?p=kudu.git;h=2810e635c ]

KUDU-3252: Follow up to replica placement bug

This patch addresses the feedback left on
patch [1].

ReservoirSample is refactored to accept an
unsigned integer rather than a signed integer.

A new test is added to verify the functionality
of the tiebreaker scenarios of
PlacementPolicy::SelectReplica().

[1] https://github.com/apache/kudu/commit/a84c8376a

Change-Id: I28582cae538ca27fa26fbfae84460b3b264ddb86
Reviewed-on: http://gerrit.cloudera.org:8080/20827
Tested-by: Alexey Serbin <ale...@apache.org>
Reviewed-by: Alexey Serbin <ale...@apache.org>


> FsManager initialized contention if two tserver instances try to call 
> CreateInitialFileSystemLayout on the same folder 
> -----------------------------------------------------------------------------------------------------------------------
>
>                 Key: KUDU-3252
>                 URL: https://issues.apache.org/jira/browse/KUDU-3252
>             Project: Kudu
>          Issue Type: Bug
>            Reporter: Redriver
>            Priority: Critical
>
> {color:#1d1c1d}I scanned the Kudu source code for DeleteDir invocation, there 
> are 2 places: 
> {color}[https://github.com/apache/kudu/blob/master/src/kudu/fs/fs_manager.cc#L384]{color:#1d1c1d}
>  and 
> {color}[https://github.com/apache/kudu/blob/master/src/kudu/fs/fs_manager.cc#L485]{color:#1d1c1d}.{color}
> {color:#1d1c1d}Imagine, I start kudu-tserver twice by mistake, finally only 
> one kudu-tserver started, is it possible that its folder may be removed by 
> another kudu-tserver since it failed to start.{color}



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