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diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/2.9.1/RELEASENOTES.2.9.1.md b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.9.1/RELEASENOTES.2.9.1.md new file mode 100644 index 0000000000..bed70b14e1 --- /dev/null +++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.9.1/RELEASENOTES.2.9.1.md @@ -0,0 +1,88 @@ + +<!--- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +--> +# "Apache Hadoop" 2.9.1 Release Notes + +These release notes cover new developer and user-facing incompatibilities, important issues, features, and major improvements. + + +--- + +* [HADOOP-12756](https://issues.apache.org/jira/browse/HADOOP-12756) | *Major* | **Incorporate Aliyun OSS file system implementation** + +Aliyun OSS is widely used among China’s cloud users and this work implemented a new Hadoop compatible filesystem AliyunOSSFileSystem with oss scheme, similar to the s3a and azure support. + + +--- + +* [HADOOP-14964](https://issues.apache.org/jira/browse/HADOOP-14964) | *Major* | **AliyunOSS: backport Aliyun OSS module to branch-2** + +Aliyun OSS is widely used among China’s cloud users and this work implemented a new Hadoop compatible filesystem AliyunOSSFileSystem with oss:// scheme, similar to the s3a and azure support. + + +--- + +* [HDFS-12883](https://issues.apache.org/jira/browse/HDFS-12883) | *Major* | **RBF: Document Router and State Store metrics** + +This JIRA makes following change: +Change Router metrics context from 'router' to 'dfs'. + + +--- + +* [HDFS-12895](https://issues.apache.org/jira/browse/HDFS-12895) | *Major* | **RBF: Add ACL support for mount table** + +Mount tables support ACL, The users won't be able to modify their own entries (we are assuming these old (no-permissions before) mount table with owner:superuser, group:supergroup, permission:755 as the default permissions). The fix way is login as superuser to modify these mount table entries. + + +--- + +* [YARN-7190](https://issues.apache.org/jira/browse/YARN-7190) | *Major* | **Ensure only NM classpath in 2.x gets TSv2 related hbase jars, not the user classpath** + +Ensure only NM classpath in 2.x gets TSv2 related hbase jars, not the user classpath. + + +--- + +* [HADOOP-15156](https://issues.apache.org/jira/browse/HADOOP-15156) | *Major* | **backport HADOOP-15086 rename fix to branch-2** + +[WASB] Fix Azure implementation of Filesystem.rename to ensure that at most one operation succeeds when there are multiple, concurrent rename operations targeting the same destination file. + + +--- + +* [HADOOP-15027](https://issues.apache.org/jira/browse/HADOOP-15027) | *Major* | **AliyunOSS: Support multi-thread pre-read to improve sequential read from Hadoop to Aliyun OSS performance** + +Support multi-thread pre-read in AliyunOSSInputStream to improve the sequential read performance from Hadoop to Aliyun OSS. + + +--- + +* [HDFS-13083](https://issues.apache.org/jira/browse/HDFS-13083) | *Major* | **RBF: Fix doc error setting up client** + +Fix the document error of setting up HFDS Router Federation + + +--- + +* [HDFS-13099](https://issues.apache.org/jira/browse/HDFS-13099) | *Minor* | **RBF: Use the ZooKeeper as the default State Store** + +Change default State Store from local file to ZooKeeper. This will require additional zk address to be configured. + + + |