This API is currently marked TODO. We need it to maintain bounded disk space usage on the JournalNode storage.
Committed to branch, thanks for the review.
+1, the patch looks good to me.
Attached patch implements purgeEditLogs() by RPCing to the JNs. It's asynchronous (i.e we don't wait for a quorum), but that's OK because this is just a cleanup method. If it fails, we'll purge those entries next time.