This change removes the u() helper from bson.py3compat
and all of its uses in the driver and tests. PyPy3 continues
to be supported since, even though it is based on python 3.2.5,
it has always supported the u string prefix.
The README and install docs are now explicit about PyPy(3) support.
The min_wire_version and max_wire_version attributes have
always been racy when connected to a mixed version replica set
or any sharded cluster. When connected to a mongos all you know
is the wire version of that mongos, not the shards behind it.
With mongos load balancing this problem is even worse, since
each operation could possibly be executed on a different mongo
version during an upgrade.
With this change the max_pool_size named parameter to
MongoClient is removed. It is replaced by the maxPoolSize
MongoDB URI option, which can be passed in a URI, or as a
keyword argument to MongoClient.
This change removes the read_preference parameter from various
command helpers on the Collection object. Those options were
never shipped in a PyMongo release. It also documents which
helpers obey Collection.read_preference.
The bigger change is the removal of the read_preference, tag_sets,
and secondary_acceptable_latency_ms params from find() and find_one()
- a major backward breaking change. Collection.with_options
is intended to replace their use.
coll.find(read_preference=ReadPreference.SECONDARY)
changes to
coll.with_options(read_preference=ReadPreference.SECONDARY).find()
Rename the attributes of IsMaster, ServerDescription, TopologyDescription, and
TopologySettings from "set_name" to "replica_set_name" for greater clarity.
Most tests now inherit from IntegrationTest and use self.client for all MongoDB
operations. self.client is now a replica set connection if an RS is available,
otherwise a connection to a standalone.
Not a breaking change, since NotMasterError inherits from AutoReconnect. But a
NotMasterError is more consistent with the original intent: bail as if we'd done a
getLastError.
Connect the MongoClient to the replica set if one is running,
otherwise connect it to the standalone. Only continue to use
MongoReplicaSetClient when testing the specific behavior of
that deprecated class.
Also suppress some warnings when running tests, and better
determine whether to test IPv6.
MongoClient now supports all MongoReplicaSetClient's features.
Fix bugs and add features in the new MongoClient to bring it up
to spec. MongoReplicaSetClient is now a deprecated stub that
subclasses MongoClient.
Introduce new errors, NetworkTimeout and NotMasterError, to
communicate events that MongoClient must handle specially.
