HADOOP-18470. Hadoop 3.3.5 release wrap-up (#5558)

Post-release updates of the branches

* Add jdiff xml files from 3.3.5 release.
* Declare 3.3.5 as the latest stable release.
* Copy release notes.

Author: steveloughran

hadoop-common-project/hadoop-common/dev-support/jdiff/Apache_Hadoop_Common_3.3.5.xml

@@ -0,0 +1,89 @@
+
+<!---
+# 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  3.3.5 Release Notes
+
+These release notes cover new developer and user-facing incompatibilities, important issues, features, and major improvements.
+
+
+---
+
+* [HADOOP-17956](https://issues.apache.org/jira/browse/HADOOP-17956) | *Major* | **Replace all default Charset usage with UTF-8**
+
+All of the default charset usages have been replaced to UTF-8. If the default charset of your environment is not UTF-8, the behavior can be different.
+
+
+---
+
+* [HADOOP-15983](https://issues.apache.org/jira/browse/HADOOP-15983) | *Major* | **Use jersey-json that is built to use jackson2**
+
+Use modified jersey-json 1.20 in https://github.com/pjfanning/jersey-1.x/tree/v1.20 that uses Jackson 2.x. By this change, Jackson 1.x dependency has been removed from Hadoop.
+downstream applications which explicitly exclude jersey from transitive dependencies must now exclude com.github.pjfanning:jersey-json
+
+
+---
+
+* [HDFS-16595](https://issues.apache.org/jira/browse/HDFS-16595) | *Major* | **Slow peer metrics - add median, mad and upper latency limits**
+
+Namenode metrics that represent Slownode Json now include three important factors (median, median absolute deviation, upper latency limit) that can help user determine how urgently a given slownode requires manual intervention.
+
+
+---
+
+* [HADOOP-17833](https://issues.apache.org/jira/browse/HADOOP-17833) | *Minor* | **Improve Magic Committer Performance**
+
+S3A filesytem's createFile() operation supports an option to disable all safety checks when creating a file. Consult the documentation and use with care
+
+
+---
+
+* [HADOOP-18382](https://issues.apache.org/jira/browse/HADOOP-18382) | *Minor* | **Upgrade AWS SDK to V2 - Prerequisites**
+
+In preparation for an (incompatible but necessary) move to the AWS SDK v2, some uses of internal/deprecated uses of AWS classes/interfaces are logged as warnings, though only once during the life of a JVM. Set the log "org.apache.hadoop.fs.s3a.SDKV2Upgrade" to only log at INFO to hide these.
+
+
+---
+
+* [HADOOP-18442](https://issues.apache.org/jira/browse/HADOOP-18442) | *Major* | **Remove the hadoop-openstack module**
+
+The swift:// connector for openstack support has been removed. It had fundamental problems (swift's handling of files \> 4GB). A subset of the S3 protocol is now exported by almost all object store services -please use that through the s3a connector instead. The hadoop-openstack jar remains, only now it is empty of code. This is to ensure that projects which declare the JAR a dependency will still have successful builds.
+
+
+---
+
+* [HADOOP-17563](https://issues.apache.org/jira/browse/HADOOP-17563) | *Major* | **Update Bouncy Castle to 1.68 or later**
+
+bouncy castle 1.68+ is a multirelease JAR containing java classes compiled for different target JREs. older versions of asm.jar and maven shade plugin may have problems with these. fix: upgrade the dependencies
+
+
+---
+
+* [HADOOP-18528](https://issues.apache.org/jira/browse/HADOOP-18528) | *Major* | **Disable abfs prefetching by default**
+
+ABFS block prefetching has been disabled to avoid HADOOP-18521 and buffer sharing on multithreaded processes (Hive, Spark etc). This will have little/no performance impact on queries against Parquet or ORC data, but can slow down sequential stream processing, including CSV files -however, the read data will be correct.
+It may slow down distcp downloads, where the race condition does not arise. For maximum distcp performance re-enable the readahead by setting fs.abfs.enable.readahead to true.
+
+
+---
+
+* [HADOOP-18621](https://issues.apache.org/jira/browse/HADOOP-18621) | *Critical* | **CryptoOutputStream::close leak when encrypted zones + quota exceptions**
+
+**WARNING: No release note provided for this change.**
+
+
+