[UI] On a tor scale setup, unable to edit a port('Error in getting port data')

R2.1 36 Ubuntu 12.04.3 Icehouse

This is a TOR scale setup with 11K ports.
In Configure> Networking> Ports page, I chose a port and opted to edit it.

After about 30 seconds, i get the error as shown in attachment (Error in getting port data)
Sometimes, this error dialog doesnt show up, but still the current port properties are not loaded in the dialog

contrail-webui-stdout log :
=======================

2015-02-25T06:52:48.997Z - debug: DiscService Response Updated by process:20990 {"ApiServer":[{"port":"9100","ip-address":"192.168.1.2"},{"port":"9100","ip-address":"192.168.1.3"}],"ttl":10}
Error: connect EMFILE
    at errnoException (net.js:769:11)
    at connect (net.js:645:19)
    at Socket.connect (net.js:710:9)
    at dns.js:71:18
    at process.startup.processNextTick.process._tickCallback (node.js:244:9)
2015-02-25T06:52:54.723Z - error: URL [http://192.168.1.2:9100/virtual-machine-interface/ebcef198-70e0-49e5-900d-fad79617e2df] returned error [{"code":"EMFILE","errno":"EMFILE","syscall":"connect"}]

/usr/src/contrail/contrail-web-controller/webroot/config/ports/api/portsconfig.api.js:88
    if ( 'floating_ip_back_refs' in vmiData['virtual-machine-interface']) {
                                 ^
TypeError: Cannot use 'in' operator to search for 'floating_ip_back_refs' in undefined
    at getVirtualIachineInterfaceCb (/usr/src/contrail/contrail-web-controller/webroot/config/ports/api/portsconfig.api.js:88:44)
    at /usr/src/contrail/contrail-web-controller/webroot/config/ports/api/portsconfig.api.js:71:9
    at /usr/src/contrail/contrail-web-core/src/serverroot/common/configServer.api.js:23:9
    at /usr/src/contrail/contrail-web-core/src/serverroot/web/api/configServer.main.api.js:95:13
    at APIServer.retryMakeCall (/usr/src/contrail/contrail-web-core/src/serverroot/common/rest.api.js:176:5)
    at Request.APIServer.makeCall (/usr/src/contrail/contrail-web-core/src/serverroot/common/rest.api.js:280:18)
    at Request.EventEmitter.emit (events.js:99:17)
    at Request.mixin._fireError (/usr/lib64/node_modules/restler/lib/restler.js:204:10)
    at ClientRequest.mixin._makeRequest (/usr/lib64/node_modules/restler/lib/restler.js:243:14)
    at ClientRequest.EventEmitter.emit (events.js:96:17)
2015-02-25T06:52:54.753Z - debug: The worker #10 has disconnected.
2015-02-25T06:52:54.886Z - error: The worker #10 has exited with exit code 1
2015-02-25T06:52:54.887Z - debug: Worker #10 did not commit suicide.
2015-02-25T06:52:55.028Z - debug: Redis: connect