/** * Synchronously writes the new checkpoints to ZooKeeper and asynchronously removes older ones. * * @param checkpoint Completed checkpoint to add. */ @Override public void addCheckpoint(final CompletedCheckpoint checkpoint) throws Exception { checkNotNull(checkpoint, "Checkpoint"); final String path = checkpointIdToPath(checkpoint.getCheckpointID()); // Now add the new one. If it fails, we don't want to loose existing data. checkpointsInZooKeeper.addAndLock(path, checkpoint); completedCheckpoints.addLast(checkpoint); // Everything worked, let's remove a previous checkpoint if necessary. while (completedCheckpoints.size() > maxNumberOfCheckpointsToRetain) { try { removeSubsumed(completedCheckpoints.removeFirst()); } catch (Exception e) { LOG.warn("Failed to subsume the old checkpoint", e); } } LOG.debug("Added {} to {}.", checkpoint, path); }
/** * Synchronously writes the new checkpoints to ZooKeeper and asynchronously removes older ones. * * @param checkpoint Completed checkpoint to add. */ @Override public void addCheckpoint(final CompletedCheckpoint checkpoint) throws Exception { checkNotNull(checkpoint, "Checkpoint"); final String path = checkpointIdToPath(checkpoint.getCheckpointID()); // Now add the new one. If it fails, we don't want to loose existing data. checkpointsInZooKeeper.addAndLock(path, checkpoint); completedCheckpoints.addLast(checkpoint); // Everything worked, let's remove a previous checkpoint if necessary. while (completedCheckpoints.size() > maxNumberOfCheckpointsToRetain) { try { removeSubsumed(completedCheckpoints.removeFirst()); } catch (Exception e) { LOG.warn("Failed to subsume the old checkpoint", e); } } LOG.debug("Added {} to {}.", checkpoint, path); }