Percona Xtradb Cluster synchronization

Hello. I don’t know if there is already a topic about this, but I could not find one and also Google doesn’t seem to give me an answer.
I user Percona Xtrdadb Cluster for a cluster of 3 SQL servers, on Debian 7. The ibdata1 files are not having the same size, there are differences of a couple hundred MB, but the clustercheck command says that it is all OK. Has anyone else encountered this problem?

Thanks a lot.

Hi. This is perfectly normal. Each node has independent InnoDB table spaces, even though the data in tables are the same. This may happen for example when on some node you have long transactions running that are causing undo space to grow, etc. See here for more details:

Thanks a lot for the information