Although Percona Toolkit 2.1.4 was recently released, we soon after found and fixed a couple of bugs concerning how pt-table-checksum works with Percona XtraDB Cluster:
There was also a bug affecting pt-table-sync –version-check, and the version check web page mentioned in tools was created.
Percona Toolkit 2.1.5 is a small release, but if you’re using pt-table-checksum on your Percona XtraDB Cluster then you’ll definitely want to upgrade. Else, you can wait for 2.1.6 which will have these fixes and lots more.