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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Commented] (GEODE-3987) Enforce the uniqueness of a single gateway-receiver per member
Date Wed, 22 Nov 2017 19:58:00 GMT


ASF GitHub Bot commented on GEODE-3987:

nabarunnag commented on a change in pull request #1086: GEODE-3987: enforce GatewayReceiver
uniqueness per member.

 File path: geode-core/src/test/resources/org/apache/geode/internal/cache/wan/GatewayReceiverXmlParsingValidationsTest.correctConfiguration[DTD].cache.xml
 @@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  See the License for the specific language governing permissions and
+  limitations under the License.
 Review comment:
   Sorry small nit pick stuff.. can these Gemstone headers be removed now

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> Enforce the uniqueness of a single gateway-receiver per member
> --------------------------------------------------------------
>                 Key: GEODE-3987
>                 URL:
>             Project: Geode
>          Issue Type: Bug
>            Reporter: Juan José Ramos Cassella
>            Assignee: Juan José Ramos Cassella
> Within the documentation, both in [Configure Gateway Receivers|]
and [gfsh create gateway-receiver|],
we state that only one {{gateway-receiver}} is allowed per member. However, there is no enforcement
of this rule within the code nor within the schema for the {{cache.xml}} file, so the user
might end up having more than one {{gateway-receiver}} per host.
> It's unknown which {{gateway-receiver}} is going to be used after a restart, making it
hard to configure firewall rules between clusters, if any. The following exception is also
printed in the logs whenever we try to register (only the first one is succesfull) the MBean
for the {{gateway-receiver}}:
> {noformat}
> [warning 2017/11/16 15:27:46.156 PST host1-server1 <Function Execution Processor1>
tid=0x44] GemFire:service=GatewayReceiver,type=Member,member=host1-server1
> 	at
> 	at
> 	at
> 	at
> 	at
> 	at org.apache.geode.distributed.internal.InternalDistributedSystem.notifyResourceEventListeners(
> 	at org.apache.geode.distributed.internal.InternalDistributedSystem.handleResourceEvent(
> 	at org.apache.geode.internal.cache.wan.GatewayReceiverImpl.start(
> 	at org.apache.geode.internal.cache.wan.GatewayReceiverFactoryImpl.create(
> 	at
> 	at
> 	at org.apache.geode.internal.cache.MemberFunctionStreamingMessage.process(
> 	at org.apache.geode.distributed.internal.DistributionMessage.scheduleAction(
> 	at org.apache.geode.distributed.internal.DistributionMessage$
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(
> 	at java.util.concurrent.ThreadPoolExecutor$
> 	at org.apache.geode.distributed.internal.DistributionManager.runUntilShutdown(
> 	at org.apache.geode.distributed.internal.DistributionManager$9$
> 	at
> Caused by: GemFire:service=GatewayReceiver,type=Member,member=host1-server1
> 	at com.sun.jmx.mbeanserver.Repository.addMBean(
> 	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(
> 	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(
> 	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(
> 	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(
> 	at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(
> 	at
> 	... 18 more
> {noformat}
> The fix implies:
> . Change the {{maxOccurs}} attribute from {{unbounded}} to {{1}} in the {{cache-1.0.xsd}}
> . Add the validation to the {{GatewayReceiverFactoryImpl.create()}} method, as this is
the single entry point for {{GatewayReceiver}} instance creations.

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