What does it mean? What do I do about it?
This is the size in KB of the queue for pointers to ai blocks waiting to be transferred to OE Replication targets. This is the "-goFast" switch for OE Replication.
Increase -pica.
Larger pica values give you more time to address communication interruptions with the target. Typical modern values are—pica 65536 or—pica 1000000.