ClassCastException while executed javascript returns Integer to js-client ------------------------------------------------------------------------- Key: ISPN-6408 URL: https://issues.jboss.org/browse/ISPN-6408 Project: Infinispan Issue Type: Bug Components: Remote Protocols Reporter: Anna Manukyan Assignee: Galder Zamarreño Fix For: 9.0.0.Alpha2, 9.0.0.Final In case if the javascript returns number, the execution of it over js-client, returns the following error: {code} Message: java.lang.ClassCastException: java.lang.Integer cannot be cast to [B Stacktrace: undefined The code is: // mode=local,language=javascript,datatype='text/plain; charset=utf-8' cache.size() The verifying test is: it('can execute a script remotely to get node address from cacheManager', function(done) { Promise.all([client, readFile('spec/utils/test-cacheManager.js')]) .then(function(vals) { var c = vals[0]; return c.addScript('test-cacheManager.js', vals[1].toString()) .then(function() { return c; } ); }) .then(t.assert(t.exec('test-cacheManager.js'), t.toBe(0))) .catch(failed(done)).finally(done); }); {code} There is no exception on server side. Also please find below the log of the node.js execution: {code} [2016-03-18 18:10:53.848] [DEBUG] connection - Connecting to 127.0.0.1:11222 [2016-03-18 18:10:53.849] [DEBUG] connection - Connected to 127.0.0.1:11222 [2016-03-18 18:10:53.849] [DEBUG] client - Invoke ping(msgId=186) [2016-03-18 18:10:53.849] [TRACE] encoder - Encode operation with topology id 0 [2016-03-18 18:10:53.849] [TRACE] transport - Write buffer(msgId=186) to 127.0.0.1:11222 [2016-03-18 18:10:53.852] [TRACE] decoder - Read header(msgId=186): opCode=24, status=6, hasNewTopology=0 [2016-03-18 18:10:53.852] [TRACE] decoder - Call decode for request(msgId=186) [2016-03-18 18:10:53.852] [TRACE] connection - After decoding request(msgId=186), buffer size is 6, and offset 6 [2016-03-18 18:10:53.852] [TRACE] connection - Complete success for request(msgId=186) with undefined [2016-03-18 18:10:53.852] [DEBUG] client - Invoke put(msgId=187,key=>test-cacheManager.js,value=>S// mode=local,language=javascript,datatype='text/plain; charset=utf-8' cache.size(),opts=undefined) [2016-03-18 18:10:53.853] [TRACE] encoder - Encode operation with topology id 0 [2016-03-18 18:10:53.853] [TRACE] transport - Write buffer(msgId=187) to 127.0.0.1:11222 [2016-03-18 18:10:53.854] [TRACE] decoder - Read header(msgId=187): opCode=2, status=6, hasNewTopology=0 [2016-03-18 18:10:53.854] [TRACE] decoder - Call decode for request(msgId=187) [2016-03-18 18:10:53.854] [TRACE] connection - After decoding request(msgId=187), buffer size is 6, and offset 6 [2016-03-18 18:10:53.854] [TRACE] connection - Complete success for request(msgId=187) with undefined [2016-03-18 18:10:53.854] [DEBUG] client - Invoke execute(msgId=188,scriptName=test-cacheManager.js,params=undefined) [2016-03-18 18:10:53.855] [TRACE] encoder - Encode operation with topology id 0 [2016-03-18 18:10:53.855] [TRACE] transport - Write buffer(msgId=188) to 127.0.0.1:11222 [2016-03-18 18:10:53.855] [DEBUG] connection - Disconnected from 127.0.0.1:11222 [2016-03-18 18:10:53.858] [TRACE] decoder - Read header(msgId=188): opCode=80, status=133, hasNewTopology=0 [2016-03-18 18:10:53.858] [ERROR] decoder - Error decoding body of request(msgId=188): java.lang.ClassCastException: java.lang.Integer cannot be cast to [B [2016-03-18 18:10:53.859] [TRACE] connection - After decoding request(msgId=188), buffer size is 75, and offset 75 [2016-03-18 18:10:53.859] [TRACE] connection - Complete failure for request(msgId=188) with java.lang.ClassCastException: java.lang.Integer cannot be cast to [B [2016-03-18 18:10:53.869] [DEBUG] client - Invoke clear(msgId=189) [2016-03-18 18:10:53.869] [TRACE] encoder - Encode operation with topology id 0 [2016-03-18 18:10:53.869] [TRACE] transport - Write buffer(msgId=189) to 127.0.0.1:11222 [2016-03-18 18:10:53.869] [TRACE] decoder - Read header(msgId=189): opCode=20, status=0, hasNewTopology=0 [2016-03-18 18:10:53.869] [TRACE] decoder - Call decode for request(msgId=189) [2016-03-18 18:10:53.869] [TRACE] connection - After decoding request(msgId=189), buffer size is 6, and offset 6 [2016-03-18 18:10:53.869] [TRACE] connection - Complete success for request(msgId=189) with undefined [2016-03-18 18:10:53.878] [DEBUG] connection - Disconnected from 127.0.0.1:11222 {code}