Details
-
Bug
-
Resolution: Done
-
Minor - P4
-
1.6.5, 1.7.5, 1.7.6
-
None
-
Ubuntu
-
Linux
Description
The basic premise:
- We're finding useless operations in the db.currentOp() when using replica sets.
- The useless ops are in the secondary nodes.
- The useless ops appear to be tied to "Replica Set Syncing".
Problems:
0. The useless ops exist.
1. The useless ops are "un-killable". However, bouncing mongod seems to make them go away.
2. When a replica does a complete re-sync, the useless op contains a seconds running.
#2 causes issues when watching for long running queries.
Reproduction:
- See attachment
- Reproducing is really as simple as forcing a re-sync on a dead node (stop mongod, delete data, re-start)