Apache Hadoop 2.6.1 Release Notes
These release notes cover new developer and user-facing incompatibilities, important issues, features, and major improvements.
- HDFS-8486 | Blocker | DN startup may cause severe data loss
Public service notice:
- Every restart of a 2.6.x or 2.7.0 DN incurs a risk of unwanted block deletion.
- Apply this patch if you are running a pre-2.7.1 release.
- HDFS-8270 | Major | create() always retried with hardcoded timeout when file already exists with open lease
Proxy level retries will not be done on AlreadyBeingCreatedExeption for create() op.
- HADOOP-7139 | Major | Allow appending to existing SequenceFiles
Existing sequence files can be appended.
