A very useful thing to do when encountering cluster issues would be to turn on Gemfire statistics. To do that, configure the below JVM parameter:
Run your application. This will produce a Gemfire-statistics.gfs file in the caching directory (collocated with the Gemfire.log file). You can find them on each node in the LiveCycle Temp directory at a path mirroring ‘\LC_TEMP\\Caching\’.
This log should be sent to Gemfire for analysis via LiveCycle support. To view this log use Gemstone’s Visual Statistics Display (VSD) downloadable from – http://www.gemstone.com