Helper script which can be used on any JVM process to gather repeated collections of thread dumps. The script leverages the jcmd utility which is bundled with the JDK and falls back to using kill -3 if jcmd is not found on the PATH.
./collect-thread-dumps.sh <pid> <interval> <count>
Goal: Collect thread dumps every 5 seconds for 5 minutes for the Java process with id 5452
./collect-thread-dumps.sh 5452 5 60
This script merges the multidump.sh and multidump-alt.sh scripts used by DataStax as well as adding some additional error handling to make thread dump collection a simpler process.