SERVER-63363 Fixing parsing of ChunkVersion

1 files changed, 57 insertions, 0 deletions

diff --git a/jstests/multiVersion/targetedTestsLastLtsFeatures/sharding_chunkversion_issue_when_upgrading.js b/jstests/multiVersion/targetedTestsLastLtsFeatures/sharding_chunkversion_issue_when_upgrading.js
new file mode 100644
index 00000000000..3535063305d
--- /dev/null
+++ b/jstests/multiVersion/targetedTestsLastLtsFeatures/sharding_chunkversion_issue_when_upgrading.js
@@ -0,0 +1,57 @@
+/**
+ * This test verifies that if a router running a 5.0 binary sends a shardVersion without a timestamp
+ * to a shard running a 5.1 or greater binary, the router will end up refreshing.
+ */
+
+// TODO (SERVER-64813): remove this test once 6.0 becomes lastLTS
+(function() {
+'use strict';
+
+load('jstests/multiVersion/libs/multi_cluster.js');  // For upgradeCluster
+
+var kDbName = 'db';
+var kShardedNss = kDbName + '.foo';
+
+jsTest.log('Deploying cluster version ' + lastLTSFCV);
+var st = new ShardingTest({
+    mongos: 1,
+    config: 1,
+    shards: 2,
+    other: {
+        mongosOptions: {binVersion: lastLTSFCV},
+        configOptions: {binVersion: lastLTSFCV},
+        rsOptions: {binVersion: lastLTSFCV},
+        rs: {nodes: 2}
+    }
+});
+st.configRS.awaitReplication();
+assert.commandWorked(
+    st.s.adminCommand({enableSharding: kDbName, primaryShard: st.shard0.shardName}));
+
+jsTest.log('Upgrading FCV to 4.4');
+assert.commandWorked(st.s.adminCommand({setFeatureCompatibilityVersion: "4.4"}));
+
+jsTest.log('Some Workload under FCV 4.4');
+assert.commandWorked(st.s.adminCommand({shardCollection: kShardedNss, key: {i: 1}}));
+assert.commandWorked(st.s.getDB(kDbName).foo.insert({i: 5}));
+
+jsTest.log('Upgrading FCV to ' + lastLTSFCV);
+assert.commandWorked(st.s.adminCommand({setFeatureCompatibilityVersion: lastLTSFCV}));
+
+jsTest.log('Upgrading binaries to ' + latestFCV);
+st.upgradeCluster('latest', {upgradeShards: true, upgradeConfigs: true, upgradeMongos: false});
+
+jsTest.log('Checking that the router has stale information');
+var collVersion = st.s.getDB(kDbName).foo.getShardVersion();
+assert.commandWorked(collVersion);
+assert.eq(collVersion.versionTimestamp, null);
+
+assert.eq(1, st.s.getDB(kDbName).foo.find({i: 5}).itcount());
+
+jsTest.log('Checking that the router refreshed its information');
+collVersion = st.s.getDB(kDbName).foo.getShardVersion();
+assert.commandWorked(collVersion);
+assert.neq(collVersion.versionTimestamp, null);
+
+st.stop();
+})();