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https://issues.apache.org/jira/browse/MYFACES-4125?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16094813#comment-16094813
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Eduardo Breijo commented on MYFACES-4125:
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In mojarra 2.2 we see the same behavior you are seeing, page redirecting too
many times, the same behavior as myfaces 2.0. But that's not the issue here,
the issue is that the response has been committed too early due to a change in
myfaces 2.2, that added a flush call inside the flush() method of StateWriter
class, which results in flushing the underlying Writer or OutputStream.
> Response committed too early due to flush from StateWriter
> ----------------------------------------------------------
>
> Key: MYFACES-4125
> URL: https://issues.apache.org/jira/browse/MYFACES-4125
> Project: MyFaces Core
> Issue Type: Bug
> Affects Versions: 2.2.12
> Reporter: Eduardo Breijo
> Attachments: server.log, StateWriter.war
>
>
> We've found a problem where it seems that MyFaces is flushing output too
> early in the RENDER_RESPONSE PHASE. As a result the response is committed
> before we have a chance to handle an error in that phase.
> This is because the renderView method from FaceletViewDeclarationLanguage
> calls writer.endDocument() which ends up calling the flush() method from
> StateWriter. This commit behavior is different between 2.0 and 2.2. It looks
> like a flush() was empty on 2.0, and now a call was added, which causes the
> issue we are seeing.
> Here's a sample app:
> 1) Drive a request: localhost:9080/StateWriter/index.xhtml
> 2) You should be able to see in the logs that response was committed, so
> redirect to error.xhtml cannot be performed.
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