## Sharding 

• SERVER-17398 155 Deadlock in MigrateStatus::startCommit 

• SERVER-17300 156 Balancer tries to create config.tags index multiple times 

• SERVER-16849 157 On mongos we always invalidate the user cache once, even if no user definitions are changing 

• SERVER-5004 158 balancer should check for stopped between chunk moves in current round 

## Indexing 

• SERVER-17521 159 improve createIndex validation of empty name 

• SERVER-17436 160 MultiIndexBlock may access deleted collection after recovering from yield 

Aggregation Framework SERVER-17224 161 Aggregation pipeline with 64MB document can terminate server 

## Write Ops 

• SERVER-17489 162 in bulk ops, only mark last operation with commit=synchronous 

• SERVER-17276 163 WriteConflictException retry loops needed for collection creation on upsert 

## Concurrency 

• SERVER-17501 164 Increase journalling capacity limits 

• SERVER-17416 165 Deadlock between MMAP V1 journal lock and oplog collection lock 

• SERVER-17395 166 Add FSM tests to stress yielding 

## Storage 

• SERVER-17515 167 copyDatabase fails to replicate indexes to secondary 

• SERVER-17436 168 MultiIndexBlock may access deleted collection after recovering from yield 

• SERVER-17416 169 Deadlock between MMAP V1 journal lock and oplog collection lock 

• SERVER-17381 170 Rename rocksExperiment to RocksDB 

• SERVER-17369 171 [Rocks] Fix the calculation of nextPrefix 

