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https://issues.apache.org/jira/browse/CHUKWA-743?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Yang updated CHUKWA-743:
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Status: Patch Available (was: Open)
> race condition in PidFile
> -------------------------
>
> Key: CHUKWA-743
> URL: https://issues.apache.org/jira/browse/CHUKWA-743
> Project: Chukwa
> Issue Type: Bug
> Reporter: Alan Snyder
> Attachments: CHUKWA-743.patch
>
>
> I believe there is a race condition in org.apache.hadoop.chukwa.util.PidFile.
> The problem is that the creation and deletion of the file is not protected by
> any lock. Client A can delete the file just before Client B tries to acquire
> a lock. If at that moment Client C tries to create the file, it will succeed.
> Client B and Client C will both succeed in acquiring a lock because there are
> two different files (one is hidden because it was deleted after being
> opened). I have tested similar code on OS X and this is what happened.
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