Hi community, This is the release candidate RC1 of Apache Hadoop 3.3.1 line. All blocker issues have been resolved.
It contains 697 fixed jira issues [2] since 3.3.0 which include a lot of features and improvements(read the full set of release notes). Below feature additions are the highlights of the release. Using lz4-java in Lz4Codec <https://issues.apache.org/jira/browse/HADOOP-17292> Using snappy-java in SnappyCodec <https://issues.apache.org/jira/browse/HADOOP-17125> Provide Regex Based Mount Point In Inode Tree <https://issues.apache.org/jira/browse/HADOOP-15891> Add Public IOStatistics API <https://issues.apache.org/jira/browse/HADOOP-16830> ABFS: Delegation SAS Generator Updates <https://issues.apache.org/jira/browse/HADOOP-17076> ABFS: Delegation SAS generator for integration with Ranger <https://issues.apache.org/jira/browse/HADOOP-16916> Über-jira: S3A Hadoop 3.3.1 features <https://issues.apache.org/jira/browse/HADOOP-16829> Add Metrics to HttpFS Server <https://issues.apache.org/jira/browse/HDFS-15711> EC: Verify EC reconstruction correctness on DataNode <https://issues.apache.org/jira/browse/HDFS-15759> Standby NameNode process getBlocks request to reduce Active load <https://issues.apache.org/jira/browse/HDFS-13183> LocatedFileStatusFetcher to collect/publish IOStatistics <https://issues.apache.org/jira/browse/MAPREDUCE-7315> *RC tag is release-3.3.1-RC1 https://github.com/apache/hadoop/releases/tag/release-3.3.1-RC1 *The RC1 artifacts are at*: https://home.apache.org/~weichiu/hadoop-3.3.1-RC1/ ARM artifacts: https://home.apache.org/~weichiu/hadoop-3.3.1-RC1-arm/ *The maven artifacts are hosted here:* https://repository.apache.org/content/repositories/orgapachehadoop-1314/ *My public key is available here:* https://dist.apache.org/repos/dist/release/hadoop/common/KEYS [1] https://issues.apache.org/jira/issues/?filter=12350491 [2] https://issues.apache.org/jira/issues/?jql=project%20in%20(YARN%2C%20HADOOP%2C%20MAPREDUCE%2C%20HDFS)%20AND%20fixVersion%20in%20( 3.3.1)%20AND%20status%20%3D%20Resolved%20ORDER%20BY%0AfixVersion%20ASC My ask: (1) please use the bits to test downstream applications. I am aware of a number of API changes between 3.1.x and 3.3.1 and even between 3.3.0 and 3.3 .1. You should use this as an opportunity to test out applications and be ready for it. (2) please check out the release notes and change log, find out if anything important should be included in 3.3.1. Please try the release and vote. The vote will run for 5 days until 2021/05/30 at 00:00 CST. Things I've verified: * all blocker issues targeting 3.3.1 have been resolved. * stable/evolving API changes between 3.3.0 and 3.3.1 are compatible. * LICENSE and NOTICE files checked * RELEASENOTES and CHANGELOG * rat check passed. Regards, Weichiu
