Resync FLE spec tests and update docs for new QE protocol on 7.0.
Add client side error for createEncryptedCollection on MongoDB < 7.0.
KMS timeout errors should always have exc.timeout==True.
PYTHON-3583 Drivers should not create the ECC collection in v2 of queryable encryption.
At most 2 connections can be in the pending state per connection pool.
The pending state covers all the work required to setup a new connection
including TCP, TLS, and MongoDB authentication. For example, if two
threads are currently creating connections, a third thread will wait for
either an existing connection to be checked back into the pool or for
one of the two threads to finish creating a connection.
The change reduces the likelihood of connection storms and improves the
driver's ability to reuse existing connections.
MongoClient now requires 2 connections and 2 threads to each MongoDB 4.4+ server.
With one connection, the server streams (or pushes) updated heartbeat info.
With the other connection, the client periodically pings the server to
establish an accurate round-trip time (RTT). This change optimizes the
discovery of server state changes such as replica set elections.
Additional changes:
- Mark server Unknown before retrying isMaster check.
- Always reset the pool _after_ marking the server unknown.
- Configure fail point before creating the client in test SpecRunner.
- Unfreeze with replSetFreeze:0 to ensure a speedy elections in test suite.
Skip test for symbol type which pymongo converts to string.
Fix {} comparison with RawBSONDocument in command events.
Add support for $$type assertions.
Nicer message in check_events.
Support errorContains with empty string.
Move custom data files to custom/.
Add max_commit_time_ms to TransactionOptions.
MaxTimeMSExpired errors on commit are labelled UnknownTransactionCommitResult.
with_transaction does not retry commit after MaxTimeMSExpired errors.
Add retryReads URI option that defaults to True.
Supported read operations will be retried once after transient
network, election, and shutdown errors on MongoDB 3.6+.
Supported operations are:
listCollections, listIndexes, and listDatabases
distinct
count, estimated_document_count, count_documents
aggregate (not including $out)
find (only for the initial find command, getMore commands are not
retried).
ChangeStreams: watch (initial aggregate command).
GridFS read APIs.
Test changes:
Add retryable reads spec test runner.
Disable retryable reads in network error tests.
