diff options
| -rw-r--r-- | jstests/multiVersion/genericSetFCVUsage/crash_mongos_against_upgraded_cluster.js | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/jstests/multiVersion/genericSetFCVUsage/crash_mongos_against_upgraded_cluster.js b/jstests/multiVersion/genericSetFCVUsage/crash_mongos_against_upgraded_cluster.js index 5b3b5955770..d99751967ab 100644 --- a/jstests/multiVersion/genericSetFCVUsage/crash_mongos_against_upgraded_cluster.js +++ b/jstests/multiVersion/genericSetFCVUsage/crash_mongos_against_upgraded_cluster.js @@ -28,6 +28,13 @@ assert(!lastStableMongos); // Assert that a mongos using the 'last-stable' binary version will successfully connect to a // cluster running on the 'latest' binary version with the 'last-stable' FCV. assert.commandWorked(mongosAdminDB.runCommand({setFeatureCompatibilityVersion: lastStableFCV})); + +// wait until all config server nodes are downgraded +// awaitReplication waits for all slaves to replicate primary's latest opTime which will +// guarantee propagation of the write to the admin.system.version collection which triggers the +// change FCV. +st.configRS.awaitReplication(); + lastStableMongos = MongoRunner.runMongos({configdb: st.configRS.getURL(), binVersion: lastStable}); assert.neq(null, lastStableMongos, |