Cluster can't trnasfer MSSQL Result :Error: write ENOTSUP

[windwaterbo]

After my http server got query result from mssql , I wanted to send them to html . I got error as follow.

events.js:85
      throw er; // Unhandled 'error' event
            ^
Error: write ENOTSUP
    at exports._errnoException (util.js:742:11)
    at ChildProcess.target._send (child_process.js:482:28)
    at ChildProcess.target.send (child_process.js:415:12)
    at sendHelper (cluster.js:657:8)
    at send (cluster.js:493:5)
    at cluster.js:469:7
    at SharedHandle.add (cluster.js:99:3)
    at queryServer (cluster.js:461:12)
    at Worker.onmessage (cluster.js:419:7)
    at ChildProcess.<anonymous> (cluster.js:673:8)

my mssql module using mssql , I have a mssql callback to get query result. Whether directly or indirectly(callback) , to get result . It can't transaction.

ps. node version is v0.11.14

if (cluster.isMaster) {
    console.log('CPUs: ' + os.cpuCount());
    for (var i = 0; i < os.cpuCount(); i += 1) {
        cluster.fork();
    }

    cluster.on('exit', function (worker) {

        // Replace the dead worker, we're not sentimental
        console.log('Worker ' + worker.id + ' died :(');
        cluster.fork();

    });

} else {
.....
.....
app.get('/query/', function(req, res, next) {
async.waterfall([

            function(Acallback) {
                query.acr_query('ACR', Acallback);
            },
            function(result, Acallback) {
                console.log(result);
                var temp=result;
                return res.send(temp);
            }
        ], function(err, result) {

        });

});
......
.....
http.createServer(app).listen(port);
 }

node version is v0.11.14

[pushkeryadav]

I am also facing the same problem.