In Kibana 4.1.1 Unable to search the string with case sensitive

In the search tag, if I search for exception, results of both Exception and exception are displayed.

This is an Elasticsearch issue, because what happens is that when you index data we do things like lowercasing.
If you want to do case sensitivity you will want to look into analysis -

Look like simple analyzer should work for me, but how to able this in elastic search