At present, the Arguments class uses a HashMap to store arguments. This means that arguments are not necessarily processed in the order they are defined in the test plan. Consider using LinkedHashMap to guarantee the ordering.
The class already used ArrayList for storing the argun=ments. However the getArgumentsAsMap() method used HashMap; this has been changed to LinkedHashMap: URL: http://svn.apache.org/viewvc?rev=654500&view=rev Log: Bug 42833 - Argument class uses LinkedHashMap in getArgumentsAsMap() to preserve ordering
This issue has been migrated to GitHub: https://github.com/apache/jmeter/issues/1973