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https://issues.apache.org/jira/browse/GEODE-8004?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17088417#comment-17088417
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Alberto Bustamante Reyes commented on GEODE-8004:
-------------------------------------------------
The "Unable to ping non-member" warn message comes from pingCorrectServer
method in Ping class. This method is called when a server receives a ping that
was intended to be received by other server. Then it is verified if the target
server is a member in the distributed system. If not, the warn is logged. I
have realized that in that case, a MessageType.PING is returned, so I think
thats the problem causing the exception saying "Unexpected message type PING".
I think that just changing the message type to REPLY could solve the problem.
> Regression Introduced Through GEODE-7565
> ----------------------------------------
>
> Key: GEODE-8004
> URL: https://issues.apache.org/jira/browse/GEODE-8004
> Project: Geode
> Issue Type: Bug
> Components: client/server
> Reporter: Juan Ramos
> Assignee: Juan Ramos
> Priority: Major
> Labels: GeodeCommons
>
> Intermittent errors were observed while executing some internal tests and
> commit
> [dd23ee8|https://github.com/apache/geode/commit/dd23ee8200cba67cea82e57e2e4ccedcdf9e8266]
> was determined to be responsible. As of yet, no local reproduction of the
> issue is available, but work is ongoing to provide a test that can be used to
> debug the issue (a [PR|https://github.com/apache/geode/pull/4974] to revert
> of the original commit has been opened and will be merged shortly, though,
> this ticket is to investigate the root cause so the original commit can be
> merged again into {{develop}}).
> ---
> It seems that a server is trying to read an {{ack}} response and, instead, it
> receives a {{PING}} message:
> {noformat}
> [error 2020/04/18 23:44:22.758 PDT <poolTimer-edgeDescript-31> tid=0x165]
> Unexpected error in pool task
> <org.apache.geode.cache.client.internal.LiveServerPinger$PingTask@3483b110>
> org.apache.geode.InternalGemFireError: Unexpected message type PING
> at
> org.apache.geode.cache.client.internal.AbstractOp.processAck(AbstractOp.java:264)
> at
> org.apache.geode.cache.client.internal.PingOp$PingOpImpl.processResponse(PingOp.java:82)
> at
> org.apache.geode.cache.client.internal.AbstractOp.processResponse(AbstractOp.java:222)
> at
> org.apache.geode.cache.client.internal.AbstractOp.attemptReadResponse(AbstractOp.java:207)
> at
> org.apache.geode.cache.client.internal.AbstractOp.attempt(AbstractOp.java:382)
> at
> org.apache.geode.cache.client.internal.ConnectionImpl.execute(ConnectionImpl.java:268)
> at
> org.apache.geode.cache.client.internal.pooling.PooledConnection.execute(PooledConnection.java:352)
> at
> org.apache.geode.cache.client.internal.OpExecutorImpl.executeWithPossibleReAuthentication(OpExecutorImpl.java:753)
> at
> org.apache.geode.cache.client.internal.OpExecutorImpl.executeOnServer(OpExecutorImpl.java:332)
> at
> org.apache.geode.cache.client.internal.OpExecutorImpl.executeOn(OpExecutorImpl.java:303)
> at
> org.apache.geode.cache.client.internal.PoolImpl.executeOn(PoolImpl.java:839)
> at org.apache.geode.cache.client.internal.PingOp.execute(PingOp.java:38)
> at
> org.apache.geode.cache.client.internal.LiveServerPinger$PingTask.run2(LiveServerPinger.java:90)
> at
> org.apache.geode.cache.client.internal.PoolImpl$PoolTask.run(PoolImpl.java:1329)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> at
> org.apache.geode.internal.ScheduledThreadPoolExecutorWithKeepAlive$DelegatingScheduledFuture.run(ScheduledThreadPoolExecutorWithKeepAlive.java:276)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> {noformat}
> Around the same time, another member of the distributed system logs the
> following warning, which seems to be related to the original changes as well:
> {noformat}
> [warn 2020/04/18 23:44:22.757 PDT <ServerConnection on port 29019 Thread 1>
> tid=0x298] Unable to ping non-member
> rs-FullRegression19040559a2i32xlarge-hydra-client-63(bridgegemfire1_host1_4749:4749)<ec><v39>:41003
> for client
> identity(rs-FullRegression19040559a2i32xlarge-hydra-client-63(edgegemfire3_host1_1071:1071:loner):50046:5a182991:edgegemfire3_host1_1071,connection=2
> {noformat}
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