Github user mjsax commented on a diff in the pull request:

    https://github.com/apache/flink/pull/1046#discussion_r37741748
  
    --- Diff: 
flink-contrib/flink-storm-compatibility/flink-storm-compatibility-core/src/main/java/org/apache/flink/stormcompatibility/api/FlinkLocalCluster.java
 ---
    @@ -41,8 +43,49 @@ public void submitTopology(final String topologyName, 
final Map<?, ?> conf, fina
     
        public void submitTopologyWithOpts(final String topologyName, final 
Map<?, ?> conf, final FlinkTopology topology,
                        final SubmitOptions submitOpts) throws Exception {
    -           ClusterUtil
    -                           
.startOnMiniCluster(topology.getStreamGraph().getJobGraph(topologyName), 
topology.getNumberOfTasks());
    +           JobGraph jobGraph = 
topology.getStreamGraph().getJobGraph(topologyName);
    +           Configuration jobConfiguration = jobGraph.getJobConfiguration();
    +
    +           /* storm conf type must be Map<String, Object> */
    +           Map<String, Object> stormConf = (Map<String, Object>)conf;
    --- End diff --
    
    The configuration in Strom is an untyped `Map`. Casting it to `Map<String, 
Object>` might fail. Flink should not limit the Map in this way.


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