[CASSANDRA-6404] Tools emit ERRORs and WARNINGs about missing javaagent

• Type: Improvement
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 1.2.14, 2.0.4
• Component/s: Legacy/Tools
• Assignee: Sam Tunnicliffe
• Reporter: Sam Tunnicliffe

Authors

Sam Tunnicliffe

Reviewers

Brandon Williams

• Created: 25/Nov/13 15:34
• Updated: 16/Apr/19 09:31
• Resolved: 12/Dec/13 18:09

Description

The combination of CASSANDRA-6107 & CASSANDRA-6293 has lead to a number of the tools shipped in bin/ to display the following warnings when run:

ERROR 15:21:47,337 Unable to initialize MemoryMeter (jamm not specified as javaagent).  This means Cassandra will be unable to measure object sizes accurately and may consequently OOM.
 WARN 15:21:47,506 MemoryMeter uninitialized (jamm not specified as java agent); KeyCache size in JVM Heap will not be calculated accurately. Usually this means cassandra-env.sh disabled jamm because you are u

Although harmless, these are a bit disconcerting. The simplest fix seems to be to set the javaagent switch as we do for the main C* launch.