in one of my node, I found many hprof files in the cassandra installation directory, they are using as much as 200GB disk space. other nodes didn't have those files.
turns out that those files are used for memory analyzing, not sure how they are generated? like these: java_pid10626.hprof java_pid13898.hprof java_pid17061.hprof java_pid21002.hprof java_pid23194.hprof java_pid29241.hprof java_pid5013.hprof
