Configuration:

db version v3.1.6-pre-
git version: 21c4ce42c34008a966e66214b1dd83cdc066bf1c

Environment

• Windows
• SA or Replica set
• Storage engine WT
• TTL configured to 20 sec

Workload:

• Hammer.mongo insert only profile w/ TTL = 20 sec (configurable variable in simple_insert.sh) i'm using it to simulate cache workload

Issues:

MongoDb reported that document has been deleted w/
db.serverStatus().metrics.ttl
But all document remains and DB size is growing like insert only no TTL , and you can see them using db.c.find()

TTL working well on the same workload , same build w/ MMAP storage engine

Additional information

Please see SERVER-19688 as well.