GitHub user vinodkc opened a pull request:

    [CARBONDATA-256]Changed StringBuffer to StringBuilder

    Even with local variables of Stringbuffer type, unnecessary synchronization 
overhead will be added in string operation.Replacing StringBuffer with 
StringBuilder in such cases can avoid synchronization overhead
            - Whether new unit test cases have been added or why no new tests 
are required? 
               >> Not added new TCs . Not modified  any new functional change

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    This closes #173
commit 5401b825efad5ad650a06a9907c0e771e706ed5b
Author: vinodkc <>
Date:   2016-09-18T12:18:44Z

    Changed StringBuffer to StringBuilder


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