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** [tickets:#3090] mds: Improve tx probation timer for MDS_TIPC_FCTRL_ENABLED**
**Status:** assigned
**Milestone:** 5.19.10
**Created:** Wed Sep 25, 2019 04:18 AM UTC by Minh Hon Chau
**Last Updated:** Wed Sep 25, 2019 04:18 AM UTC
**Owner:** Minh Hon Chau
if MDS_TIPC_FCTRL_ENABLED is enabled only either at sender or receiver (1), the
tx probation timer will be expired eventually. This tx probation timer
currently relies on the mds user's data message sent from the peers to
recognize whethere MDS_TIPC_FCTRL_ENABLED is enabled.
The problem happens, if both peers enable MDS_TIPC_FCTRL_ENABLED, but after the
sender subscribes the receiver's service and not sending any data until the tx
probation expires. The sender thinks that the MDS_TIPC_FCTRL_ENABLED is
disabled at receiver side and vice versa, hence the mds tipc flow control has
no effect.
The above problem may not happen within OpenSAF service since most of agent
will send the Initialize message after mds subscription. However, if the case
(1) happens, the tx probation prolongs until a data message is sent, which
should be improved to reduce the tx probation timer.
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