When configuring with Compass XML configuration to use a Coherence Datagrid as a CacheStore location, the property compass.engine.connection is set to the value coherence://index_name:cache_name When trying to open a connection to the cache in AbstractCoherenceDirectory::configure() the method findConnection is mean to return only the resource part of the URI like: index_name:cache_name It is currently returning ://index_name:cache_name The reason is because the code in both implementations of the findConnection method return the connection string after removing only the protocol name itself protected String findConnection(String connection) { return connection.substring(PROTOCOL.length()); } This should be modified to also remove the :// from the returned string in this fashion: protected String findConnection(String connection) { return connection.substring(PROTOCOL.length() + 3 ); }