[SERVER-22498] Fix migration session id multiversion failure Created: 05/Feb/16  Updated: 19/Nov/16  Resolved: 08/Feb/16

Status: Closed
Project: Core Server
Component/s: Sharding
Affects Version/s: None
Fix Version/s: 3.2.3, 3.3.2

Type: Bug Priority: Major - P3
Reporter: Dianna Hohensee (Inactive) Assignee: Dianna Hohensee (Inactive)
Resolution: Done Votes: 0
Labels: code-only
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Related
is related to SERVER-20290 Recipient shard for migration can con... Closed
Tested
tested by SERVER-22459 Write multiversion test for migration... Closed
Backwards Compatibility: Fully Compatible
Operating System: ALL
Backport Completed:
Sprint: Sharding 10 (02/19/16)
Participants:

 Description   

Migration fails from 3.2 mongod to 3.0 mongod.

In a migration, a 3.2 donor mongod generates a migration session id, saves it, and then sends it to a 3.0 recipient mongod, which ignores it. The 3.0 recipient then sends requests to the 3.2 donor without a session id. The 3.2 donor rejects the empty session id requests because it doesn't match the id it generated...

If the 3.2 donor receives a request without a session id, ignore the match results.



 Comments   
Comment by Githook User [ 08/Feb/16 ]

Author:

{u'username': u'DiannaHohensee', u'name': u'Dianna Hohensee', u'email': u'dianna.hohensee@10gen.com'}

Message: SERVER-22498 fix migration session id multiversion failure

(cherry picked from commit a6903e29adf6a674711a4cbcd8f4cf3b9bd66432)
Branch: v3.2
https://github.com/mongodb/mongo/commit/44643e26669b9bdba0e9f20c7d1edb230d7fbfb2

Comment by Githook User [ 08/Feb/16 ]

Author:

{u'username': u'DiannaHohensee', u'name': u'Dianna Hohensee', u'email': u'dianna.hohensee@10gen.com'}

Message: SERVER-22498 fix migration session id multiversion failure
Branch: master
https://github.com/mongodb/mongo/commit/a6903e29adf6a674711a4cbcd8f4cf3b9bd66432

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