Leon Misakyan created NUTCH-2253:
------------------------------------
Summary: ProtocolFactory still not thread-safe
Key: NUTCH-2253
URL: https://issues.apache.org/jira/browse/NUTCH-2253
Project: Nutch
Issue Type: Bug
Components: fetcher
Affects Versions: 2.2.1
Reporter: Leon Misakyan
Fix For: 2.3, 1.8
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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
