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https://issues.apache.org/jira/browse/HDFS-4422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13560886#comment-13560886
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Steve Loughran commented on HDFS-4422:
--------------------------------------
Before we move, I've just been looking at jetty + servlet API 3 details on the
web
2008 ref to jetty 7: http://docs.codehaus.org/display/JETTY/Continuations
jetty 7 + 8 details: http://wiki.eclipse.org/Jetty/Feature/Continuations
the implication here is that continuations (which allow you to release/resume a
request, have the servlet engine push the request to some stack and pop it
later) in the jetty6 API will work on jetty 7+ 8, but there's an implict hint
here that the servlet 3.0 equivalent only work on jetty7+.
That is: not everything in the 3.0 servlet API is in Jetty6.
If there are things in the 3.0 API that people need to use, they should have
explicit unit tests to verify they work, and everyone should know which
features of the API are missing -& where you should fallback to jetty-specific
details
> Upgrade servlet-api dependency from version 2.5 to 3.0.
> -------------------------------------------------------
>
> Key: HDFS-4422
> URL: https://issues.apache.org/jira/browse/HDFS-4422
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 2.0.3-alpha
> Reporter: Plamen Jeliazkov
> Assignee: Plamen Jeliazkov
> Priority: Minor
> Fix For: 3.0.0, 2.0.3-alpha
>
> Attachments: HDFS-4422.patch
>
>
> Please update the servlet-api jar from 2.5 to javax.servlet 3.0 via Maven:
> <dependency>
> <groupId>javax.servlet</groupId>
> <artifactId>javax.servlet-api</artifactId>
> <version>3.0.1</version>
> <scope>provided</scope>
> </dependency>
> I am running a 2.0.3 dev-cluster and can confirm compatibility. I have
> removed the servlet-api-2.5.jar file and replaced it with
> javax.servlet-3.0.jar file. I am using javax.servlet-3.0 because it
> implements methods that I use for a filter, namely the
> HttpServletResponse.getStatus() method.
> I believe it is a gain to have this dependency as it allows more
> functionality and has so far proven to be backwards compatible.
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