[jgroups-users] RejectedExcecutionException in TP

Bonjour à tous,

I hit this exception in a test run with v3.6.7.

java.util.concurrent.RejectedExecutionException: Task 
org.jgroups.protocols.TP$3@3485cdbb rejected from 
java.util.concurrent.ThreadPoolExecutor@70067f19[Running, pool size = 4, 
active threads = 4, queued tasks = 500, completed tasks = 1717]
at 
java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2047)
at 
org.jgroups.util.ShutdownRejectedExecutionHandler.rejectedExecution(ShutdownRejectedExecutionHandler.java:33)
at 
java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:823)
at 
java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1369)
at org.jgroups.protocols.TP.loopback(TP.java:1522)
at org.jgroups.protocols.TP.down(TP.java:1486)
at org.jgroups.stack.Protocol.down(Protocol.java:438)

It looks like I could increase the size of the internal thread pool in 
TP but shouldn't it have some exception handling and retry for this?  I 
don't have a way to control the number of threads that might send 
messages requiring loopback at any point in time.  I would set 
loopback_separate_thread to false but this setting warns "Don't use 
this; might get removed without warning".

Bruce Schuchardt
Apache Geode project

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