DO NOT REPLY [Bug 20116] New: - Java Date formats are not synchronised i.e. not threadsafe

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=20116

Java Date formats are not synchronised i.e. not threadsafe

           Summary: Java Date formats are not synchronised i.e. not
                    threadsafe
           Product: JMeter
           Version: unspecified
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: HTTP
        AssignedTo: jmeter-dev@jakarta.apache.org
        ReportedBy: jkb@stian.freeserve.co.uk


Just learnt from a colleague that the Date formats are not synchronised. 

A quick scan of JMeter (LATEST) found a couple of classes using DateFormat: 
SaveService and CookieManager.

I presume SaveService will not be run in multiple threads, but the 
CookieManager will be, so could presumably be affected by this "feature" - 
especially as CookieManager creates a static date format.

The 1.4.1. JavaDoc suggests that one should create a separate format for each 
thread, or synchronise access to the format.

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