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In a distributed application cluster, clients are the nodes that access information from the Zookeeper servers grouped within a Zookeeper ensemble. At frequent intervals, every client sends a message to the server to let the sever know that the client is alive. Likewise, the server too sends an acknowledgement when a client connects. If there is no response from the connected server, the client automatically redirects the message to another server. If the clients are overloaded with requests or if the client takes too long to connect to the target Apache zookeeper, the requests could not be processed swiftly leading to time delays. To avoid such time delays and to ensure that the requests are processed faster, it is essential to keep track on the clients connecting to the target Apache Zookeeper. The ZkpCliConTest test helps administrators in this regard!

Using this test, administrators can determine the packet transmission and reception of each client connected to the target Apache Zookeeper server. This test also helps administrators determine which client is taking too long to process the requests and the client on which too many connections are currently active. This way, the test provides near-accurate indicators of the client connection load on the target Apache Zookeeper server. Also, by reporting the count of requests that are in queue for each client, the test reveals early to administrators if a client is experiencing request processing difficulties.

Outputs of the test : One set of results for each client connecting to the target Apache Zookeeper server being monitored.

Measurement	Description	Measurement Unit	Interpretation
Packet_trans_rate	Indicates the rate at which packets were transmitted to this client during the last measurement period.	Packets/sec	Compare the value of this measure across clients to figure out the client to which maximum number of packets are transmitted per second.
Packet_rec_rate	Indicates the rate at which packets were received by this client during the last measurement period.	Packets/sec	Compare the value of this measure across clients to figure out the client that received the maximum number of packets per second.
Outstand_requests	Indicates the number of requests that were queued upon receipt from this client.	Number
Avg_latency	Indicates the average time taken to process the requests received from this client.	Milliseconds
Min_latency	Indicates the minimum time taken to process the requests received from this client.	Milliseconds
Max_latency	Indicates the maximum time taken to process the requests received from this client.	Milliseconds	Compare the value of this measure across clients to figure out the client whose requests are taking too long to be processed by the server.
Open_conns	Indicates the number of connections that are currently open for this client.	Number
Connection_usage	Indicates the percentage of connections that are currently active for this client.	Percent	A high value for this measure indicates that the client is using the maximum amount of allocated connections.
Max_conns	Indicates the maximum number of connections that are allowed for this client.	Number