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https://issues.apache.org/jira/browse/NUTCH-1604?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13701887#comment-13701887
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Hudson commented on NUTCH-1604:
-------------------------------
Integrated in Nutch-trunk #2278 (See
[https://builds.apache.org/job/Nutch-trunk/2278/])
NUTCH-1604 Protocol-factory not thread-safe (Revision 1500609)
Result = SUCCESS
jnioche : http://svn.apache.org/viewvc/nutch/trunk/?view=rev&rev=1500609
Files :
* /nutch/trunk/CHANGES.txt
* /nutch/trunk/src/java/org/apache/nutch/protocol/ProtocolFactory.java
> ProtocolFactory not thread-safe
> -------------------------------
>
> Key: NUTCH-1604
> URL: https://issues.apache.org/jira/browse/NUTCH-1604
> Project: Nutch
> Issue Type: Bug
> Components: fetcher
> Affects Versions: 1.7, 2.2.1
> Reporter: Julien Nioche
> Fix For: 2.3, 1.8
>
> Attachments: NUTCH-1604.2.x.patch, NUTCH-1604.patch
>
>
> The method getProtocol() should be synchronized otherwise the Fetcher threads
> can access it around the same time and query the cache before it's had a
> chance of being populated properly. This would happen for a handful of calls
> until the subsequent ones get the cache but this should be fixed nonetheless
> e.g. when we want a guarantee that the same Protocol instance will be called
> for the same fetching session.
> The other Factor classes which use the same cache mechanism would suffer from
> the same problem.
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