MOTOR-282 Support mongos pinning for sharded transactions

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• Closed

NODE-1743 Support mongos pinning for sharded transactions

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• Closed

PHPC-1290 Support mongos pinning for sharded transactions

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• Closed

PHPLIB-466 Support mongos pinning for sharded transactions

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• Closed

PYTHON-1673 Support mongos pinning for sharded transactions

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• Closed

RUBY-1561 Support mongos pinning for sharded transactions & sharded transactions recovery token

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• Closed

RUST-122 Support mongos pinning for sharded transactions

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• Closed

SERVER-36122 Implement the router side of the distributed commit protocol

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• Closed

SERVER-36580 Mongos should preserve error labels for write ops

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• Closed

SERVER-36589 Implement mongos abort logic

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• Closed

SERVER-35518 Support the failCommand fail point in mongoS

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• Closed