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-rw-r--r--jstests/replsets/rollback_collMod_fatal.js7
1 files changed, 7 insertions, 0 deletions
diff --git a/jstests/replsets/rollback_collMod_fatal.js b/jstests/replsets/rollback_collMod_fatal.js
index a5c16a14d47..62cb22ac20a 100644
--- a/jstests/replsets/rollback_collMod_fatal.js
+++ b/jstests/replsets/rollback_collMod_fatal.js
@@ -1,4 +1,11 @@
// test that a rollback of collMod altering TTL will cause the node to go into a FATAL state
+//
+// If all data-bearing nodes in a replica set are using an ephemeral storage engine, the set will
+// not be able to survive a scenario where all data-bearing nodes are down simultaneously. In such a
+// scenario, none of the members will have any data, and upon restart will each look for a member to
+// inital sync from, so no primary will be elected. This test induces such a scenario, so cannot be
+// run on ephemeral storage engines.
+// @tags: [requires_persistence]
// set up a set and grab things for later
var name = "rollback_collMod_fatal";