MongoDB - Anyone has encountered this problem?: Loading .5M docs (using node js script reading csv file) into sharded database(3 shards) in mongoDB (v3.0.3) with balancer on. Multiple databases sharing the shards. Noticed following behavior:
- missing data (range of 1 to 5 docs) which has happened intermitently. Shard key is hashed and all docs have this key and value pair.
- while data is loading, expected the count to continously increase but noticed it increaes then decreases then increases again
mongos> db.logs.count()
471566
mongos> db.logs.count()
468772
mongos> db.logs.count()
465814
mongos> db.logs.count()
554979
Turning the balancer off did not have the same problem. Any explanation to this? Thanks.