Support Article
Cassandra and the ADM nodes do not work
SA-84896
Summary
All the Cassandra Nodes stop working and one of the Adaptive Decision Management server is Unreachable.
Error Messages
WARN [main] CassandraDaemon.java:181 - Non-Oracle JVM detected. Some features, such as immediate unmap of compacted SSTables, may not work as intended
Steps to Reproduce
Unknown
Root Cause
A defect or configuration issue in the operating environment.
Cassandra does not support IBM JVM.
Resolution
Perform the following local-change:
Use the OpenJDK or Oracle's JVM.
If the user does not want to to change the JVM for the servers, then configure a custom Java home for Cassandra after performing the below:
- Applying HFix-44049.
- Set the dnode/cassandra_java_home prconfig setting.
The ADM nodes depend on the Decision Data Store (DDS) nodes. Since the failure of the DDS nodes, the ADM nodes also fail.
Published August 15, 2019 - Updated October 8, 2020
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