Seg faults in Percona Server 5.6.19
It seems an invalid pointer was caught when doing a full table scan on the Archive engine. I recommend you to post the trace on Percona Server bug tracker. Developers are very friendly even if you are not a client. They will be able to tell you if it is a Percona specific problem or an upstream problem (if they have changed anything on the Archive stored engine).

My own experience with the Archive engine is that, while it is a nice theoretical engine for some workloads, it is currently mostly unmaintained and not ready for production, having astounding bugs. Percona does not recommend it, and if you are concerned about stability, you are probably better served by InnoDB compressed or TokuDB (no matter if you are running PS or stock MySQL).