Use apache commons for B64 decoding continuation token (only), and added

ability to make the limit on the entropy data call configurable, for
internal testing.  Defaults to 100, as before.

Author: fadushin

java_src/com/basho/yokozuna/handler/EntropyData.java

@@ -184,7 +184,7 @@ static boolean isLive(final Bits liveDocs, final TermsEnum te) throws IOExceptio
     }
 
     static BytesRef decodeCont(final String cont) {
-        final byte[] bytes = DatatypeConverter.parseBase64Binary(cont);
+        final byte[] bytes = org.apache.commons.codec.binary.Base64.decodeBase64(cont);
         return new BytesRef(bytes);
     }
 

src/yz_entropy.erl

@@ -34,7 +34,7 @@ iterate_entropy_data(Index, Filter, Fun) ->
     case yz_solr:ping(Index) of
         true ->
             Filter2 = [{continuation, none},
-                       {limit, 100}|Filter],
+                       {limit, app_helper:get_env(?YZ_APP_NAME, entropy_data_limit, 100)}|Filter],
             ED = yz_solr:entropy_data(Index, Filter2),
             iterate_entropy_data(Index, Filter2, Fun, ED);
         _ ->