SERVER-35655 Update FCV constants throughout server code.

SERVER-35169 Bump wire protocol version for 4.2.
SERVER-35752 Ensure tests that rely on FCV pass after updating FCV constants.
SERVER-35163 Unblacklist tests that expect FCV version to differ between "last-stable" and "latest."
SERVER-34984 Update major_version_upgrade.js to call setFCV to the latest FCV.
SERVER-35656 Ensure a 4.0 mongos crashes upon attempting to connect to an FCV 4.2 cluster.
SERVER-35404 Re-enable the sharding_last_stable_mongos_and_mixed_shards suite.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/mongo/db/views/view_catalog.cpp b/src/mongo/db/views/view_catalog.cpp
index 27eb95d875d..107249c3d3d 100644
--- a/src/mongo/db/views/view_catalog.cpp
+++ b/src/mongo/db/views/view_catalog.cpp
@@ -254,11 +254,11 @@ StatusWith<stdx::unordered_set<NamespaceString>> ViewCatalog::_validatePipeline_
     // Save this to a variable to avoid reading the atomic variable multiple times.
     auto currentFCV = serverGlobalParams.featureCompatibility.getVersion();
 
-    // If the feature compatibility version is not 4.0, and we are validating features as master,
-    // ban the use of new agg features introduced in 4.0 to prevent them from being persisted in the
+    // If the feature compatibility version is not 4.2, and we are validating features as master,
+    // ban the use of new agg features introduced in 4.2 to prevent them from being persisted in the
     // catalog.
     if (serverGlobalParams.validateFeaturesAsMaster.load() &&
-        currentFCV != ServerGlobalParams::FeatureCompatibility::Version::kFullyUpgradedTo40) {
+        currentFCV != ServerGlobalParams::FeatureCompatibility::Version::kFullyUpgradedTo42) {
         expCtx->maxFeatureCompatibilityVersion = currentFCV;
     }
     auto pipelineStatus = Pipeline::parse(viewDef.pipeline(), std::move(expCtx));