java.lang.IllegalStateException: Unknown protocol: CB2 When use Python client

[wang...@gmail.com]

I use python client talking to the server and keeps going got following error.

this is hazelcast-4.0 server:

Mar 22, 2020 4:30:54 PM com.hazelcast.core.LifecycleService

INFO: [10.0.0.36]:5701 [dev] [4.0] [10.0.0.36]:5701 is STARTED

Mar 22, 2020 4:31:26 PM com.hazelcast.internal.nio.tcp.TcpIpConnection

WARNING: [10.0.0.36]:5701 [dev] [4.0] Connection[id=1, /10.0.0.36:5701->/10.0.1.156:42108, qualifier=null, endpoint=null, alive=false, connectionType=NONE] closed. Reason: Exception in Connection[id=1, /10.0.0.36:5701->/10.0.1.156:42108, qualifier=null, endpoint=null, alive=true, connectionType=NONE], thread=hz.modest_yonath.IO.thread-in-2

java.lang.IllegalStateException: Unknown protocol: CB2

at com.hazelcast.internal.nio.tcp.UnifiedProtocolDecoder.onRead(UnifiedProtocolDecoder.java:116)

at com.hazelcast.internal.networking.nio.NioInboundPipeline.process(NioInboundPipeline.java:137)

at com.hazelcast.internal.networking.nio.NioThread.processSelectionKey(NioThread.java:382)

at com.hazelcast.internal.networking.nio.NioThread.processSelectionKeys(NioThread.java:367)

at com.hazelcast.internal.networking.nio.NioThread.selectLoop(NioThread.java:293)

at com.hazelcast.internal.networking.nio.NioThread.run(NioThread.java:248)

Mar 22, 2020 4:31:29 PM com.hazelcast.internal.nio.tcp.TcpIpConnection

WARNING: [10.0.0.36]:5701 [dev] [4.0] Connection[id=2, /10.0.0.36:5701->/10.0.1.156:42110, qualifier=null, endpoint=null, alive=false, connectionType=NONE] closed. Reason: Exception in Connection[id=2, /10.0.0.36:5701->/10.0.1.156:42110, qualifier=null, endpoint=null, alive=true, connectionType=NONE], thread=hz.modest_yonath.IO.thread-in-0

java.lang.IllegalStateException: Unknown protocol: CB2

at com.hazelcast.internal.nio.tcp.UnifiedProtocolDecoder.onRead(UnifiedProtocolDecoder.java:116)

at com.hazelcast.internal.networking.nio.NioInboundPipeline.process(NioInboundPipeline.java:137)

at com.hazelcast.internal.networking.nio.NioThread.processSelectionKey(NioThread.java:382)

at com.hazelcast.internal.networking.nio.NioThread.processSelectionKeys(NioThread.java:367)

at com.hazelcast.internal.networking.nio.NioThread.selectLoop(NioThread.java:293)

at com.hazelcast.internal.networking.nio.NioThread.run(NioThread.java:248)

client code is as following

---------------

import hazelcast

from hazelcast.config import ClientProperties

config = hazelcast.ClientConfig()

config.network_config.addresses.append("10.0.0.36:5701")

config.set_property(ClientProperties.INVOCATION_TIMEOUT_SECONDS.name, 2) 

client = hazelcast.HazelcastClient(config)

personnel_map = client.get_map("personnel-map")

personnel_map.put("Alice", "IT")

personnel_map.put("Bob", "IT")

personnel_map.put("Clark", "IT")

print("Added IT personnel. Printing all known personnel")

for person, department in personnel_map.entry_set().result():

    print("{} is in {} department".format(person, department))

    

client.shutdown()

--------------

[Joe Sherwin]

The python client for Hazelcast IMDG 4.0 is not yet released. 4.0 client protocol enhancements breaks compatibility with the 3.x python client.

On Mar 22, 2020, at 10:06 PM, wang...@gmail.com wrote:



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[Helena Wang]

Thanks a lot. I will use the lower version. 

Joe Sherwin <j...@hazelcast.com> 于2020年3月22日周日 下午8:56写道：

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[Joe Sherwin]

Helena, here’s the compatibility chart for reference. https://hazelcast.org/imdg/clients-languages/#client-compatibility The latest version of the python client (3.12.3) was released on 3/19/2020. The latest IMDG server version is 3.12.6. You can find it here https://hazelcast.org/imdg/download/archives/#hazelcast-imdg-3-12-6. I also highly recommend utilizing the management center app version (3.12.9), here... https://hazelcast.org/imdg/download/archives/#hazelcast-management_center.

To view this discussion on the web visit https://groups.google.com/d/msgid/hazelcast/CAOyVZsWM39bq-0FsoMYJOWA12QT%3Doj8iCdvjnRTJg%2B1%3DjiDUuA%40mail.gmail.com.