SERVER-67538 Make multi-doc txns return WCE on index catalog changesr6.1.0-rc1

Background: SERVER-47866 stopped bumping the collection's minimum
visibility timestamp on catalog changes related to an index; only the
index's minimum visibility snapshot continues to be updated. One side
effect of this change is that a multi-document transaction can read a
at a snapshot where the index is not yet ready and commit at a
timestamp when the index is ready, which not intended behaviour and
can open the opportunity for a race to happen.

This patch introduces a check for the indices' minimum visible timestamp.
Attempting to write to an index entry while reading at an incompatible
timestamp returns a write conflict exception. Locking rules guarantee that
we see a consistent in-memory view of the indices' minimum visible
snapshot.

(cherry picked from commit a4bd3ce3607d2c3020d7efa3501240ae4b1a1b03)

0 files changed, 0 insertions, 0 deletions