[FTS] CBFT UI does not respond, gateway timeout error, metakv issues (too many sockets open)

Version : 4.5.1664

repro steps:

At this point of time , I was not creating any index. No work related to cbft . I was loading data to couchbase and found that FTS UI not responding

[Note] not checked in other systems if same issue is observed everywhere. Will keep an eye if anywhere present . It was a freshly installed couchbase.

While I load data to it using python SDK , i was installing some tools on it .

System spec :

172.23.123.38 : 24 cores, 128GB RAM, SSD = /data

Error messages:

eInfo{NodeID:"cc16ba34ae43350072a39541f03aaa93", Priority:0, Opaque:interface {}(nil)}, RecoveryType:"recovery-full"}}, EjectNodes:[]service.NodeInfo(nil)}}}}}
2016-03-02T17:47:18.528-08:00 [INFO] planner: nodesRemove: []string{}
2016-03-02T17:47:18.528-08:00 [INFO] planner: step unregister
2016-03-02T17:47:18.528-08:00 [INFO] planner: step planner
2016-03-02T17:47:18.540-08:00 [INFO] ctl/manager, GetTaskList, haveTasksRev: 4, changed, rv: &service.TaskList{Rev:service.Revision

, Tasks:[]service.Task{}}
2016-03-03T01:56:13.515-08:00 [INFO] rest: error code: 500, msg: could not retrieve index defs: Get http://127.0.0.1:8091/_metakv/fts/cbgt/cfg/indexDefs: dial tcp 127.0.0.1:8091: socket: too many open files
2016-03-03T01:56:14.514-08:00 [INFO] rest: error code: 500, msg: could not retrieve index defs: Get http://127.0.0.1:8091/_metakv/fts/cbgt/cfg/indexDefs: dial tcp 127.0.0.1:8091: socket: too many open files

[ From the logs I can think that on 03/02 at 5.47 I installed couchbase and start loading my data ]

The log:

https://s3.amazonaws.com/cb-customers/cbftui/9998/collectinfo-2016-03-03T210439-ns_1%40127.0.0.1.zip