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Support Article

Node in Decision Data Store is intermittently stopped

SA-65704

Summary



A node in Decision Data Store is intermittently stopped.


Error Messages



[DDS.Default-Pulse:7] [STANDARD] [ ] [ ] (dnode.api.DdsService) ERROR - Exception occurred while checking disk space on pulse.
com.pega.dsm.dnode.impl.cassandra.CassandraMetricsProvider$MetricUnavailableException: Metric Count unavailable via jmx

Caused by: java.util.concurrent.ExecutionException: java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.ServiceUnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: localhost; nested exception is:
java.net.ConnectException: Connection refused]

Caused by: java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.ServiceUnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: localhost; nested exception is:
java.net.ConnectException: Connection refused]

Caused by: javax.naming.ServiceUnavailableException

Caused by: java.net.ConnectException: Connection refused
at java.net.Socket.connect(Socket.java:666) ~[?:1.8.0]
at java.net.Socket.connect(Socket.java:606) ~[?:1.8.0]
at java.net.Socket.<init>(Socket.java:469) ~[?:1.8.0]



Steps to Reproduce



Add four nodes on the loading page.


Root Cause



A defect or configuration issue in the operating environment.


Resolution



Make the following change to the operating environment:

Adjust the below operating system level settings.


memlock unlimited
nofile 100000



 
Suggest Edit

Published October 5, 2018 - Updated December 2, 2021

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