https://bz.apache.org/bugzilla/show_bug.cgi?id=64312
Bug ID: 64312
Summary: Many memberDisappeared messages are logged on all
nodes of the cluster with JDK versions 12 or above,
even when system is idle
Product: Tomcat 8
Version: 8.5.50
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: Cluster
Assignee: dev@tomcat.apache.org
Reporter: mahathivavilal...@gmail.com
Target Milestone: ----
When a cluster is installed with TOMEE 7.0.7 (uses Tomcat 8.5.50.0) with JDK
12 or above only, for default values of frequency (=500) and dropTime (=3000),
many memberDisappeared messages are logged on all nodes of the cluster. This is
occuring even when the system is idle.
The following messages are seen in the logs:
Mar 19, 2020 9:43:56 AM jdk.internal.reflect.DelegatingMethodAccessorImpl
invoke
INFO: Received
memberDisappeared[org.apache.catalina.tribes.membership.MemberImpl[tcp://{10,
18, 88, 143}:4001,{10, 18, 88, 143},4001, alive=1683768, securePort=-1, UDP
Port=-1, id={-16 81 -2 100 -1 -27 65 77 -100 123 96 -67 -54 -14 107 84 },
payload={}, command={}, domain={}]] message. Will verify.
Mar 19, 2020 9:43:56 AM jdk.internal.reflect.DelegatingMethodAccessorImpl
invoke
INFO: Verification complete. Member still
alive[org.apache.catalina.tribes.membership.MemberImpl[tcp://{10, 18, 88,
143}:4001,{10, 18, 88, 143},4001, alive=1683768, securePort=-1, UDP Port=-1,
id={-16 81 -2 100 -1 -27 65 77 -100 123 96 -67 -54 -14 107 84 }, payload={},
command={}, domain={}]]
We have tried to increase the dropTime value to 8500 and observed very few
messages logged in some of the nodes.
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