[SERVER-10537] Mongos should "downcast" batched writes to safe writes if talking to an old shard Created: 15/Aug/13  Updated: 28/Oct/13  Resolved: 02/Oct/13

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

Type: New Feature Priority: Major - P3
Reporter: Alberto Lerner Assignee: Greg Studer
Resolution: Duplicate Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Duplicate
duplicates SERVER-10818 Implement compatibility to older servers Closed
Related
related to SERVER-10519 Mongos support for new write operations Closed
Participants:

 Description   

We'll be expanding in sub-taks soon. But here's the temporary list:

+ logic for switching batches into writes + gle's

+ logic for detecting when to use the item above

+ Draining the writeback listener

+ isMaster.maxWireVersion and initShardVersion

<to be fleshed out>


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