When using using NullPersistent over clustering and sending a large message, the server is converting the large message as a body of messages in memory (regular buffer). There is a bug over Null Persistent Large messages over the bridge: https://github.com/clebertsuconic/hornetq/commit/6815a3a4325ad9d648a79bc3ae08a8a57b8ce52a
PR:https://github.com/hornetq/hornetq/pull/2006
VERIFIED with 6.4.2.CP.CR1
Retroactively bulk-closing issues from released EAP 6.4 cumulative patches.