On 25 April 2010 10:48, JKnight JKnight <beukni...@gmail.com> wrote: > Dear all, > > My Cassandra server had thread leak when high concurrent load. I used > jconsole and saw many, many thread occur. >
Just because there are a lot of threads, need not imply a thread leak. Cassandra uses a lot of threads. Do you see the number of threads gradually increase during a soak test on your test cluster? Can you dump the JVM info (I believe sending a signal makes it dump this)? The JMX information viewable via JConsole also gives you a list of threads. Assuming you see this gradually increasing during the soak test, can you tellwhich thread pool is increasing? Mark
