Interpreting data node log output. ndb_2_out.log (no replies)

Hi there:

Thank you in advance for assistance.

we have on development environment a mysql cluster 7.3.6 on redhat Enterprise 6.5.
This cluster have four server as follow:

2 API/SQL NODES
2 MGM installed on sql nodes
2 Data Nodes.

This is a master/master configuration cluster.

We're testing several performances on cluster shutting down one data node.
We have several doubts about many lines into output log, for example on phase 5 of startup.

......
restartCreateObj(10) file: 1
restartCreateObj(52) file: 1
restartCreateObj(211) file: 1
restartCreateObj(51) file: 1
restartCreateObj(53) file: 1

.......


Where can we found more information about output log on distinct phases 0-101 in data nodes? (books, pdf ....).


how can we be sure data are replicated (F/F') after downloaded node is available? how can we interpret the log?




Thank you in advance for assistance.