[CASSANDRA-11894] Changing MaximumThreads for ReadStage and MutationStage using JConsole returns 'java.lang.UnsupportedOperationException'.

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Won't Fix
• Fix Version/s: 2.1.x
• Component/s: Local/Config
• Labels: JConsole

Environment

Apache Cassandra 2.1.14.1272

• Severity: Low
• Since Version: 2.1.14
• Assignee: Yuki Morishita
• Reporter: Sucwinder Bassi

Authors

Yuki Morishita

• Created: 26/May/16 14:27
• Updated: 16/Apr/19 09:30
• Resolved: 21/Sep/16 17:20

Description

When using JConsole to change the MaximumThreads from default 32 to 128 for ReadStage and MutationStage this exception is displayed 'java.lang.UnsupportedOperationException'. Nothing is written to the system.log.

If I perform the same change using Apache Cassandra 2.0.8.39 I can change MaximumThreads to 128 for ReadStage and MutationStage without any problems. See the attached image showing the two machines.