charles kim created MRM-1702:
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Summary: Race condition caused by retrieving the same artifact
from a Proxy from muliple threads
Key: MRM-1702
URL: https://jira.codehaus.org/browse/MRM-1702
Project: Archiva
Issue Type: Bug
Affects Versions: 1.4-M1
Environment: RHEL6
Reporter: charles kim
When multiple requests are made for the same artifact where proxy is used
(meaning there is no local file exists yet), there is a race condition.
A code block that moves the downloaded temp file to target location is in
synchronized block which does prevent them from writing the same file,
Before moving the temp file to the target location, it overwrites the existing
file ( by first checking the file existence and removes it).
By removing it (from the 2nd thread), the first thread that wrote the file and
and tries to spool the file again throws java.io.FileNotFoundException.
Please see attached patch.
Thanks
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