InterProcessSemaphoreMutex and Reaper

[Terry Siu]

Hi,

Can I use the InterProcessSemaphoreMutex and Reaper together for ZK path 
cleanup? When I create the semaphore mutex with a path, say “/a/b/c”, two ZK 
paths are created:

/a/b/c/locks
/a/b/c/leases

I add the path “/a/b/c” to my Reaper instance with a reaping threshold of 1 
minute. I then proceed to use my mutex:

CuratorFramework client = /* Create the client */
Reaper reaper = new Reaper(client, 60000);
InterProcessLock lock = new InterProcessSemaphoreMutex(client, “/a/b/c”);
reaper.addPath(“/a/b/c”, Reaper.Mode.REAP_UNTIL_GONE);
if (lock.acquire(0, TimeUnit.SECONDS)) {
  try {
    /* Execute critical section */
  } finally {
    lock.release();
  }
} else {
  /* Log it */
}

After the above code finishes, I notice the reaper kicking in several times, 
but I continue to see the locks and leases subdirectories sticking around? 
Shouldn’t the directory ‘c’ and everything under it be deleted by the Reaper? I 
experimented using an InterProcessMutex and the path gets deleted as expected.

Thanks,
-Terry