anchor.diff:  
   In conjunction to the work already done with MongoDB change streams, we recognize there is much work that remains which includes testing the new change streams implementations against MongoDB 5 and updating the connector documentation to reflect these new changes.
   You can expect this and much more as a part of the next preview release.
  +As per the updated Debezium 1.8 link:/roadmap/[roadmap], we're also planning to add support for incremental snapshots to the Debezium connector for MongoDB, as well as a variant of the outbox event router which supports the event format of this connector.
   
   == Other Fixes
   
   There were quite a number of bugfixes and stability changes in this release, some noteworthy are:
   
  -* Row hashing in LogMiner Query not able to differentiate between rows of a statement. https://issues.redhat.com/browse/DBZ-3834[DBZ-3834]
  -* The chunk select statement is incorrect for combined primary key in incremental snapshot https://issues.redhat.com/browse/DBZ-3860[DBZ-3860]
  -* column.the mask.hash.hashAlgorithm.with.... data corruption occurs when using this feature https://issues.redhat.com/browse/DBZ-4033[DBZ-4033]
  -* Infinispan SPI throws NPE with more than one connector configured to the same Oracle database https://issues.redhat.com/browse/DBZ-4064[DBZ-4064]
  +* Row hashing in LogMiner Query not able to differentiate between rows of a statement (https://issues.redhat.com/browse/DBZ-3834[DBZ-3834])
  +* The chunk select statement is incorrect for combined primary key in incremental snapshot (https://issues.redhat.com/browse/DBZ-3860[DBZ-3860])
  +* column.the mask.hash.hashAlgorithm.with.... data corruption occurs when using this feature (https://issues.redhat.com/browse/DBZ-4033[DBZ-4033])
  +* Infinispan SPI throws NPE with more than one connector configured to the same Oracle database (https://issues.redhat.com/browse/DBZ-4064[DBZ-4064])
   
   Altogether, https://issues.redhat.com/issues/?jql=project%20%3D%20DBZ%20AND%20fixVersion%20%3D%201.8.0.Alpha1%20ORDER%20BY%20component%20ASC[82 issues] were fixed for this release.
   A big thank you to all the contributors from the community who worked on this release:
  
positive.code: 
  +++<!-- more -->+++
  
  == MongoDB Change Stream Support
  
  MonogoDB https://docs.mongodb.com/manual/changeStreams/[change streams] allow an application or client access to real-time change data capture events without the complexity of tailing the oplog.
  This functionality was first introduced by the MongoDB engine in version 3.6; however the functionality was limited.
  Starting with MongoDB 4.0, change streams now captures changes across a database, replica set, or even a sharded cluster.
  
  Debezium added change stream support to:
  
  * Enable compatibility with MongoDB 5 (not yet tested, see future work below).
  * Possibly become a replacement for oplog reading.
  * Provide full document output in update events (see below).
  
  In order to use change stream support with Debezium, you must use MongoDB 4.0 or later.
  
  
negative.code: Specifies that changes should  be captured by tailing the oplog; this is the legacy behavior.
  `change_streams`::
  Specifies that changes should be captured by using MongoDB change streams.
  Updates will not contain the full message; only changed fields are part of the event.
  `change_streams_update_full`::
  Specifies that changes should be captured by using MongoDB change streams.
  Updates will contain a full snapshot of the current record in the event.
  