Async replication leads to a lot of log undo/redo during background
replication. This leads to performance drop to almost zero.
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
Concurrent Apply can lead to child node applies before parent, so
undo/redo operations will perform. This leads to performance degradation
in case of tree with many sublevels.
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>