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https://issues.apache.org/jira/browse/WW-4789?focusedWorklogId=429879&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-429879
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ASF GitHub Bot logged work on WW-4789:
--------------------------------------

                Author: ASF GitHub Bot
            Created on: 02/May/20 21:14
            Start Date: 02/May/20 21:14
    Worklog Time Spent: 10m 
      Work Description: JCgH4164838Gh792C124B5 commented on a change in pull 
request #397:
URL: https://github.com/apache/struts/pull/397#discussion_r419008690



##########
File path: core/src/main/resources/struts-default.xml
##########
@@ -68,7 +68,6 @@
     <constant name="struts.excludedPackageNames"
               value="
                 ognl.,
-                java.io.,

Review comment:
       Hi @lukaszlenart.  A quick check confirms the upload failure is 
happening in the Showcase application snapshots (2.6 and 2.5).  After digging a 
little into the cause, I still think we'd be safer leaving `java.io` in the 
default exclusion list.
   
   My proposal is to open a JIRA for the Showcase issue and fix-or-workaround 
the upload failure in the Showcase application instead (leaving `java.io` in 
the default exclusion list).
   
   How does that sound to you ?




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Issue Time Tracking
-------------------

    Worklog Id:     (was: 429879)
    Time Spent: 1h 40m  (was: 1.5h)

> ActionContext should be immutable
> ---------------------------------
>
>                 Key: WW-4789
>                 URL: https://issues.apache.org/jira/browse/WW-4789
>             Project: Struts 2
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Lukasz Lenart
>            Assignee: Lukasz Lenart
>            Priority: Major
>             Fix For: 2.6
>
>          Time Spent: 1h 40m
>  Remaining Estimate: 0h
>
> Right now ActionContext is a bag of different contexts with mixed 
> responsibility. Also some of them lay in ThreadLocal variable, but some are 
> accessed directly. Also it is easily to modify the internal state which 
> shouldn't be possible. The context should be constant during whole action 
> execution period.



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