Test case for issue [Ensure that releasing listener is called](https://github.com/elastic/elasticsearch/pull/23310#issue-209518352)

[vsevolodk (Vsevolod Kaimashnikov)]

Hi, please help.
Do exist test case which are used curl and /nodes/stats response
for issue
Ensure that releasing listener is called ?
I have exception

Caused by: org.elasticsearch.common.breaker.CircuitBreakingException: [parent] Data too large, data for [<transport_request>] would be larger than limit of [4442554368/4.1gb]
	at org.elasticsearch.indices.breaker.HierarchyCircuitBreakerService.checkParentLimit(HierarchyCircuitBreakerService.java:211) ~[elasticsearch-5.1.2.jar:5.1.2]
	at org.elasticsearch.common.breaker.ChildMemoryCircuitBreaker.addEstimateBytesAndMaybeBreak(ChildMemoryCircuitBreaker.java:128) ~[elasticsearch-5.1.2.jar:5.1.2]
	at org.elasticsearch.transport.TcpTransport.handleRequest(TcpTransport.java:1332) ~[elasticsearch-5.1.2.jar:5.1.2]
	at org.elasticsearch.transport.TcpTransport.messageReceived(TcpTransport.java:1242) ~[elasticsearch-5.1.2.jar:5.1.2]
	at org.elasticsearch.transport.netty4.Netty4MessageChannelHandler.channelRead(Netty4MessageChannelHandler.java:74) ~[?:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:373) ~[?:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359) ~[?:?]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:351) ~[?:?]

and I would like detect rootcause of this exception before elasticsearch upgrade.
Also can you please explain the difference between
limit_size and estimated_size fields? I could not find it in documentation

"breakers" : {
        "request" : {
          "limit_size_in_bytes" : 3807903744,
          "limit_size" : "3.5gb",
          "estimated_size_in_bytes" : 4442546784,
          "estimated_size" : "4.1gb",
          "overhead" : 1.0,
          "tripped" : 92
        },
        "fielddata" : {
          "limit_size_in_bytes" : 3807903744,
          "limit_size" : "3.5gb",
          "estimated_size_in_bytes" : 0,
          "estimated_size" : "0b",
          "overhead" : 1.03,
          "tripped" : 0
        },
        "in_flight_requests" : {
          "limit_size_in_bytes" : 6346506240,
          "limit_size" : "5.9gb",
          "estimated_size_in_bytes" : 497,
          "estimated_size" : "497b",
          "overhead" : 1.0,
          "tripped" : 0
        },
        "parent" : {
          "limit_size_in_bytes" : 4442554368,
          "limit_size" : "4.1gb",
          "estimated_size_in_bytes" : 4442547281,
          "estimated_size" : "4.1gb",
          "overhead" : 1.0,
          "tripped" : 24954
        }
      }