Hi YARN developers working on Timeline v2 (YARN-2928) branch,
I just realized I’ve accidentally turned off SMP for my local Timeline v2
build. After I turned yarn.system-metrics-publisher.enabled back on, the RM
fails to start with the following FATAL message:
2015-12-14 17:27:54,125 INFO ipc.Server (Server.java:run(797)) - IPC Server
listener on 8033: starting
2015-12-14 17:27:54,127 FATAL event.AsyncDispatcher
(AsyncDispatcher.java:dispatch(189)) - Error in dispatcher thread true
java.lang.Exception: No handler for registered for class
org.apache.hadoop.yarn.server.resourcemanager.metrics.AbstractSystemMetricsPubli
sher$SystemMetricsEventType
at
org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:185)
at
org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:109)
at java.lang.Thread.run(Thread.java:745)
2015-12-14 17:27:54,127 INFO event.AsyncDispatcher
(AsyncDispatcher.java:register(208)) - Registering class
org.apache.hadoop.yarn.serve
r.resourcemanager.metrics.AbstractSystemMetricsPublisher$SystemMetricsEventType
for class org.apache.hadoop.yarn.server.resourcemanager.m
etrics.TimelineServiceV2Publisher$TimelineV2EventHandler
Interestingly, we’re registering this class to timeline v2 handler in the next
line of log. I’m wondering if this is caused by some of my missing configs, or
a newly introduced issue? Has anybody on feature-YARN-2928 branch noticed this
issue? Thanks!
Li Lu
