Paging documentation [1] needs a review.

1. max-size-bytes default value -1 (disabled).
>>if the max-size-bytes=-1, paging is not disabled and global-max-size will be used for limiting.

2. The default value for global-max-size is -1, which means no limit.
>>Incorrect; The default global-max-size is 1/2 of the JVM max size (-Xmx)

[1] https://access.redhat.com/documentation/en-us/red_hat_amq/7.2/html/using_amq_broker/paging