Uploaded image for project: 'Infinispan'
  1. Infinispan
  2. ISPN-2995

FineGrainedAtomicHashMap may not lock all the composite keys in optimistic locking

XMLWordPrintable

    • Icon: Bug Bug
    • Resolution: Done
    • Icon: Major Major
    • 5.3.0.Final
    • 5.2.7.Final, 5.3.0.Final
    • Core

      In OptimisticLockingInterceptor, we are collecting the composite keys from ApplyDeltaCommand is the key belongs to the node:

      case ApplyDeltaCommand.COMMAND_ID:
  ApplyDeltaCommand command = (ApplyDeltaCommand) wc;
  if (cdl.localNodeIsOwner(command.getKey())) {
    Object[] compositeKeys = command.getCompositeKeys();
    set.addAll(Arrays.asList(compositeKeys));
  }
break;

      However, when we are going to acquire the lock in the node if it is the primary owner:

      protected final void lockAndRegisterBackupLock(TxInvocationContext ctx, Object key, long lockTimeout, boolean skipLocking) throws InterruptedException {
  if (cdl.localNodeIsPrimaryOwner(key)) {
    lockKeyAndCheckOwnership(ctx, key, lockTimeout, skipLocking);
  } else if (cdl.localNodeIsOwner(key)) {
    ctx.getCacheTransaction().addBackupLockForKey(key);
  }
}

      The CompositeKey should always acquire the lock.

      This is probably a bug. Add an unit test to verify that locking works as expected for AtomicHashMap.

              pruivo@redhat.com Pedro Ruivo
              pruivo@redhat.com Pedro Ruivo
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

                Created:
                Updated:
                Resolved: