Thank you, Chunk-En, for driving this. Regards, Uma
On Mon, Jan 5, 2026 at 8:17 AM Chung En Lee <[email protected]> wrote: > Hello all, > > We are excited to announce the release of Apache Ozone 2.1.0! > > Apache Ozone 2.1.0 adds 805 new features, improvements and bug fixes on top > of Ozone 2.0. > > Notable Changes: > > HDDS-10239 | Storage Container Reconciliation > Introduced a container reconciliation protocol to resolve mismatched > container states and verify replica integrity. > HDDS-12940 | Ozone Snapshot Phase 3: Scale up Snapshot Operations > Enhanced Ozone Snapshot scalability and continued stability improvements. > HDDS-8387 | Container and volume scanners phase II > Enhanced storage volume failure handling by introducing a 'degraded' state > to preserve data availability, along with improved health observability. > HDDS-12564 | Handling disk issues in Datanodes - Phase II > Enhanced Datanode disk space management to prevent out-of-space failures. > > New Configuration Options: > > OZONE_SERVER_OPTS: A new environment variable was added to allow setting > common Java options for all Ozone server processes at once. > ozone.compaction.service.enabled: Enable or disable a background job that > periodically compacts rocksdb tables flagged for compaction. The default is > false. > ozone.om.compaction.service.run.interval: A background job that > periodically compacts rocksdb tables flagged for compaction. The default is > 6 hours. > ozone.om.compaction.service.timeout: A timeout value of compaction service. > If this is set greater than 0, the service will stop waiting for compaction > completion after this time. Unit could be defined with postfix > (ns,ms,s,m,h,d). The default is 10 min. > ozone.om.compaction.service.columnfamilies: A comma separated, no spaces > list of all the column families that are compacted by the compaction > service. If this is empty, no column families are compacted. The default is > > "keyTable,fileTable,directoryTable,deletedTable,deletedDirectoryTable,multipartInfoTable". > ozone.om.snapshot.prune.compaction.backup.batch.size: This property > controls Prune SST files in Compaction backup directory in batches every > ozone.om.snapshot.compaction.dag.prune.daemon.run.interval. The default is > 2000. > > These properties provide more control over the Ratis write buffer, which > can be adjusted to optimize performance based on workload and > hardware. > > ozone.om.ratis.server.pending.write.byte-limit: Sets the maximum byte size > of all pending write requests. The default is 64MB. > ozone.om.ratis.server.pending.write.element-limit: Sets the maximum number > of pending write requests. The default is 4096. > > Incompatible change: > HDDS-12152 | Ozone now requires the Hadoop 3.4 runtime. Support for Hadoop > 3.1.2 is deprecated. > > Default Value Changes: > hdds.scm.block.deletion.per-interval.max: Default is now 500,000 blocks per > interval. > hdds.datanode.volume.choosing.policy: Default changed from > RoundRobinVolumeChoosingPolicy to CapacityVolumeChoosingPolicy. > hdds.datanode.volume.min.free.space: Default changed from 5GB to 20GB. > hdds.datanode.volume.min.free.space.percent: Default changed to 0.1%. > hdds.datanode.block.deleting.limit.per.interval: Default is now 20,000 > blocks per interval. > hdds.scm.safemode.min.datanode: Default changed from 1 to 3. > hdds.secret.key.expiry.duration: Default is now 9 days. This change ensures > that tokens remain valid for their full configured duration, preventing > premature key invalidation and improving stable authentication. > fs.trash.classname: Class name updated to > org.apache.hadoop.fs.ozone.OzoneTrashPolicy. > ozone.key.deleting.limit.per.task: Default is now 50,000 keys per task. > ozone.s3g.https-address: Default changed from None to 0.0.0.0:9879. > ozone.om.fs.snapshot.max.limit: Default is now 10,000 snapshots. > ozone.om.ratis.segment.size: Default is now 64MB (was 4MB). > ozone.scm.ha.dbtransactionbuffer.flush.interval: Default is now 1 min. > ozone.scm.ha.ratis.segment.size: Default is now 64MB (was 4MB). > > Removed Configurations: > hdds.rest.http-address: This configuration is removed since HDDS-12761. > hdds.scm.safemode.pipeline-availability.check: This configuration is > removed since HDDS-11799. > > Getting Started: > Download Apache Ozone 2.1.0 https://ozone.apache.org/downloads/ > Documentation https://ozone.apache.org/docs/2.1.0/ > > Thank you for your continued support, and we look forward to your feedback > on this release! >
