MongoDB 3.5.5 is released

[Ramon Fernandez]

MongoDB 3.5.5 is ready for testing. As a reminder, 3.5.5 is a development release and is not intended for production use. The 3.5 series will evolve into 3.6, which will be for production.

​This release includes the following features:

New Aggregation Expressions

Three new aggregation expressions have been added in this release:

• $arrayToObject: convert
  ​​
  s an array of pairs into an object
  
• $$REM
  ​​
  OVE: functionality to remove fields
  
• $objec
  ​​
  tToArray: converts an object to an array of key/value pairs
  

Hardening Against Deeply Nested Documents

MongoDB 3.5.5 includes additional safeguards and error messages to help users detect if their schemas contain deeply nested documents.

Improved Support For Rollback

MongoDB 3.5.5 addresses a number issues in rollback algorithms

​

, making ​replica sets more resilient.

​​

Also

​included​

 in this release:

• SERVER-19758  Add "executionStats" and "allPlansExecution" explain modes to aggregation explain
• SERVER-26113  explain() for aggregations pulls from the plan cache
• SERVER-27439  Large queries can omit comment in currentOp
• SERVER-27670  Add more user-friendly error message for EBUSY returns from WiredTiger
• SERVER-27711  createIndexes command no longer supports maxTimeMS option
• SERVER-27834  Index builds during initial sync should not implicitly create collections
• SERVER-28014  When SSL mode is preferSSL, log connections that do not use SSL
• SERVER-28107  Augment command result with operationTime in mongos
• SERVER-28128  Add support for a "comment" parameter to the aggregate command

All Issues | Downloads 

As always, please let us know of any issues. 

-- The MongoDB Team