Elasticsearch, the Head and Bigdesk plugins stops recognising other nodes from cluster

I am using elastic search 1.0.0

After updating elastic search cluster setting configuration to

index: type: fixed size: 320, queue_size: -1, search: type: fixed, size:
320, queue_size: -1

The Head and Bigdesk stops recognising other nodes from cluster. Any one
have faced similar issue please help.

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