tree aeee277cfd161c39786acabc80db61e7a395305a
parent 0c8b69d4137518557f1841ec737da272b509c94b
author Paul J. Davis <paul.joseph.davis@gmail.com> 1437512506 -0500
committer Robert Newson <rnewson@apache.org> 1440430768 +0100

Fix stuck changes reader in clean_mailbox

Due to unfortunate timing issues it was possible for a changes reader to
get stuck in clean_mailbox reading an entire changes feed before
exiting. If the ibrowse call timed out right before ibrowse starts
sending messages then we would see clean_mailbox loop until the changes
feed terminated on the source.

This caps the number of messagses that can be cleaned up to a maximum of
sixteen. This limit is rather arbitrary. The cleanup was intended for when
only a couple messages were lingering. This is much larger than that
without being insanely large.

BugzId: 49717