MongoDB Documentation, Release 3.0.4 Geo 12.2.8 Release Notes for MongoDB 1.2.x New Features DB Upgrade Required Replication Changes mongoimport field filter changing • 2d geospatial search (page 499) • geo $center and $box searches • More indexes per collection • Faster index creation • Map/Reduce • Stored JavaScript functions • Configurable fsync time • Several small features and fixes • --upgrade – stop your mongod process – run ./mongod --upgrade – start mongod again • use a slave – start a slave on a different port and data directory – when its synced, shut down the master, and start the new slave on the regular port. There are some changes that will require doing an upgrade if your previous version is <= 1.0.x. If you’re already using a version >= 1.1.x then these changes aren’t required. There are 2 ways to do it: Ask in the forums or IRC for more help. • There have been minor changes in replication. If you are upgrading a master/slave setup from <= 1.1.2 you have to update the slave first. • mongoimportjson has been removed and is replaced with mongoimport that can do json/csv/tsv • We’ve changed the semantics of the field filter a little bit. Previously only objects with those fields would be returned. Now the field filter only changes the output, not which objects are returned. If you need that behavior, you can use $exists 923 12.2. Previous Stable Releases