Elasticsearch java Client 分页时连接关闭问题

Question

最近在做一个es 深度钻取功能，对源数据查询es默认分页时10条，于是做了一个分页界面,Client 写成单例模式了，每次返回时关闭client.close() 就会出现bug：
NodeAvailableException[None of the configured nodes are available: [{#transport#-1}{192.168.170.69}{192.168.170.69:9300}]]
at org.elasticsearch.client.transport.TransportClientNodesService.ensureNodesAreAvailable(TransportClientNodesService.java:290)
at org.elasticsearch.client.transport.TransportClientNodesService.execute(TransportClientNodesService.java:207)
at org.elasticsearch.client.transport.support.TransportProxyClient.execute(TransportProxyClient.java:55)
at org.elasticsearch.client.transport.TransportClient.doExecute(TransportClient.java:288)
at org.elasticsearch.client.support.AbstractClient.execute(AbstractClient.java:359)
at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:86)
at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:56)

不关闭虽然用了同一个实例，避免了每次请求，新生成新的实例，但是考虑连接总要关闭的，不知道有没有好的解释和办法？