With continuous TCP session setup/destroy over a long time, few flows stuck in Hold state

[Vedamurthy Joshi]

R2.20 Build 112 Ubuntu 14.04 Juno multi-node setup

Between two VMs in a VN, below hping3 was creating 1000 tcp sessions and destroying them

for i in {1..1000000}; do hping3 -S -p 2200 219.14.75.3 -s 10000 -c 1000 -i u10000 ; done

Over a period of time, it was seen that few flows are stuck in hold state
After stopping all traffic, after over a min or so, these hold entries go away.

Gcore of the agent will be in http://10.204.216.50/Docs/bugs/#

root@nodek1:~# flow -l | grep -B 1 Action:H
438268 219.14.75.4:10174 219.14.75.3:2200 6 (2)
(K(nh):47, Action:H, Flags:, TCP:S, S(nh):0, Stats:1070/57780, SPort:0)
--
924808 219.14.75.4:10664 219.14.75.3:2200 6 (2)
(K(nh):47, Action:H, Flags:, TCP:S, S(nh):0, Stats:4097/221238, SPort:0)
--
1145528 219.14.75.4:10777 219.14.75.3:2200 6 (2)
(K(nh):47, Action:H, Flags:, TCP:S, S(nh):0, Stats:2296/123984, SPort:0)
--
2520208 219.14.75.4:10685 219.14.75.3:2200 6 (2)
(K(nh):47, Action:H, Flags:, TCP:S, S(nh):0, Stats:665/35910, SPort:0)
--
3395648 219.14.75.4:10844 219.14.75.3:2200 6 (2)
(K(nh):47, Action:H, Flags:, TCP:S, S(nh):0, Stats:4831/260874, SPort:0)
--
3531352 219.14.75.4:10037 219.14.75.3:2200 6 (2)
(K(nh):47, Action:H, Flags:, TCP:S, S(nh):0, Stats:52/2808, SPort:0)
--
3933772 219.14.75.4:10591 219.14.75.3:2200 6 (2)
(K(nh):47, Action:H, Flags:, TCP:S, S(nh):0, Stats:4076/220104, SPort:0)
root@nodek1:~#

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/17439
Submitter: Praveen K V (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/17442
Submitter: Praveen K V (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/17442
Committed: http://github.org/Juniper/contrail-controller/commit/fd5345bf2b9581e99cf78b96d11bcf2274e41453
Submitter: Zuul
Branch: R3.0

commit fd5345bf2b9581e99cf78b96d11bcf2274e41453
Author: Praveen K V <email address hidden>
Date: Fri Feb 19 01:08:49 2016 +0530

Index manager state-machine

Introduced state-machine for index-management in flow.

Change-Id: I86749e6ffbff7ad82facf12e24abb42a3dceca0a
Fixes-Bug: #1524582

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/17439
Submitter: Praveen K V (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/17439
Committed: http://github.org/Juniper/contrail-controller/commit/492a5262987ca05a33a41e0b8b0634a041ac8158
Submitter: Zuul
Branch: master

commit 492a5262987ca05a33a41e0b8b0634a041ac8158
Author: Praveen K V <email address hidden>
Date: Fri Feb 19 01:08:49 2016 +0530

Index manager state-machine

Introduced state-machine for index-management in flow.

Change-Id: I86749e6ffbff7ad82facf12e24abb42a3dceca0a
Fixes-Bug: #1524582