This is an automated email from the ASF dual-hosted git repository.
stevel pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/hadoop-release-support.git
commit bba572e146695c90eae19d0b5b76b949e9a248c1
Author: Steve Loughran <ste...@cloudera.com>
AuthorDate: Tue Feb 20 17:21:15 2024 +0000
HADOOP-19018. Improving design of release build file
Driven more by property files which are managed in git
---
README.md | 3 +-
build.xml | 304 +++++++++++++++++++++++-----------
pom.xml | 41 +++--
release.properties | 18 ++
src/releases/release-3.4.0.properties | 36 ++++
src/text/core-announcement.txt | 6 +-
6 files changed, 293 insertions(+), 115 deletions(-)
diff --git a/README.md b/README.md
index f6b37a3..9b4c3fd 100644
--- a/README.md
+++ b/README.md
@@ -316,7 +316,8 @@ ant cloudstore.build
[Big Data Interop](https://github.com/GoogleCloudPlatform/bigdata-interop).
-This is java 11+ only.
+* This is java 11+ only.
+* currently only builds against AWS v1 SDK.
Ideally, you should run the tests, or even better, run them before the RC is
up for review.
diff --git a/build.xml b/build.xml
index 5fb99c1..ad6f8bd 100644
--- a/build.xml
+++ b/build.xml
@@ -16,96 +16,131 @@
~ limitations under the License.
-->
-<project name="release-validator" default="init" basedir=".">
+<project name="hadoop-release" default="init" basedir=".">
<description>
build file to manage release and validation of artifacts.
- Maven is one of the targets here.
-
+ Maven is simply one of the targets here.
+
+ It loads three property files in order:
+ * build.properties: custom deployment options. User managed.
+ * release.properties: pointer to the real release file. SCM-managed.
+ * src/releases/${release.property.file}: the actual release properties
+ which contains things like git tag, release and RC version etc.
+ SCM-managed.
+
hadoop version is set in the property hadoop.version
build.properties is required to set source of RC tarball
- All the complex commands are done by executing the unix commands;
+ Most of the complex commands are done by executing the unix commands;
this build file sets them up by building the commands properly.
- for building other modules to work, this ant build must be on java11
+ For building other modules, this ant build must be on java11
+ and have the maven executable in the path.
+ Note: some libraries (e.g. Avro) have even higher requirements.
+ Enjoy.
+
+ Text announcement templates are in
+ src/text
+ These are expanded with property expansion.
- For validating artifacts put up as an an RC, use the http-artifacts target
- to retrieve, with http.source set to the url, e.g
- http.source=https://home.apache.org/~iwasakims/hadoop-2.10.2-RC0/
</description>
- <!-- set global properties for this build -->
+
+ <!-- set immutable properties for this build -->
<property name="src" location="src"/>
<property name="home" location="${user.home}"/>
<property name="target" location="target"/>
- <!--suppress AntResolveInspection -->
- <property file="build.properties"/>
-
-
-
<property name="downloads.dir" location="downloads"/>
<property name="dist.dir" location="${downloads.dir}/dist"/>
<property name="incoming.dir" location="${downloads.dir}/incoming"/>
+
+ <!-- foundational macro to fail if a property is unset-->
+ <macrodef name="require">
+ <attribute name="p" />
+ <sequential>
+ <fail unless="@{p}" message="unset property @{p}" />
+ </sequential>
+ </macrodef>
+
+ <!--
+ Load the user/installation specific properties.
+ As these fix the properties for the test of the build,
+ they allow for customization.
+ -->
+ <!--suppress AntResolveInspection -->
+ <property file="build.properties"/>
+
+ <!--
+ Load the release.properties file
+ This MUST contain an absolute/relative path to the release.properties
+ file if not set in build.properties.
+ -->
+ <loadproperties srcFile="release.properties"/>
+ <require p="release.property.file"/>
+ <!-- and load the file it referencves.-->
+ <loadproperties srcFile="${release.property.file}"/>
- <!-- base name of a release -->
- <property name="hadoop.version" value="3.4"/>
- <property name="rc" value="RC0"/>
- <property name="rc.name" value="${hadoop.version}-${rc}"/>
-
- <!-- previous version, used in annoucements -->
- <property name="previous.ver" value="3.3.6"/>
- <property name="release.branch" value="3.4"/>
+ <!--
+ Load all property files, validate the settings, build the ant
+ properties, define macros etc.
+ -->
+
+ <target name="init" description="initialize">
- <property name="git.commit.id" value="706d88266ab"/>
- <property name="jira.id" value="HADOOP-18470"/>
+ <!-- base name of a release -->
+ <require p="hadoop.version"/>
+ <!-- release candidate number-->
+ <require p="rc"/>
+ <!-- commit id of the RC -->
+ <require p="git.commit.id"/>
+ <!-- JIRA ID of the release -->
+ <require p="jira.id"/>
+ <!-- branch this release is from -->
+ <require p="release.branch"/>
- <!-- for spark builds -->
- <property name="spark.version" value="3.5.0-SNAPSHOT"/>
- <!-- spark excludes hadoop-aws dependency and forces in their own
- this fixes it to be in sync with hadoop
- see https://issues.apache.org/jira/browse/SPARK-39969
- -->
- <property name="spark.aws.version" value="1.12.316"/>
+ <property name="rc.name" value="${hadoop.version}-${rc}"/>
+ <!-- previous version, used in announcements -->
+ <require p="previous.version"/>
- <property name="release" value="hadoop-${hadoop.version}"/>
- <property name="rc.dirname" value="${release}-${rc}"/>
- <property name="release.dir" location="${downloads.dir}/${rc.dirname}"/>
- <property name="tag.name" value="release-${rc.name}"/>
-<!-- <property name="nexus.staging.url"
- value=""/>-->
- <property name="release.untar.dir" location="${downloads.dir}/untar"/>
- <property name="release.source.dir" location="${release.untar.dir}/source"/>
- <property name="release.site.dir" location="${release.untar.dir}/site"/>
- <property name="site.dir"
location="${release.untar.dir}/site/r${hadoop.version}"/>
- <property name="release.bin.dir" location="${release.untar.dir}/bin"/>
- <property name="check.native.binaries" value="true"/>
- <property name="arm.artifact.dir"
location="${arm.hadoop.dir}/target/artifacts/" />
- <property name="arm.dir" location="${downloads.dir}/arm" />
- <property name="arm.binary.src"
location="${arm.artifact.dir}/hadoop-${hadoop.version}.tar.gz" />
- <property name="arm.binary.prefix" value="hadoop-${hadoop.version}-aarch64"
/>
- <property name="arm.binary.filename" value="${arm.binary.prefix}.tar.gz" />
- <property name="arm.binary" location="${arm.dir}/${arm.binary.filename}" />
- <property name="arm.binary.sha512" location="${arm.binary}.sha512" />
- <property name="arm.binary.asc" location="${arm.binary}.asc" />
+ <property name="release" value="hadoop-${hadoop.version}"/>
+ <property name="rc.dirname" value="${release}-${rc}"/>
+ <property name="release.dir" location="${downloads.dir}/${rc.dirname}"/>
- <property name="staged.artifacts.dir"
location="${staging.dir}/${rc.dirname}"/>
+ <property name="tag.name" value="release-${rc.name}"/>
+ <!-- <property name="asf.staging.url"
+ value=""/>-->
+ <property name="release.untar.dir" location="${downloads.dir}/untar"/>
+ <property name="release.source.dir"
location="${release.untar.dir}/source"/>
+ <property name="release.site.dir" location="${release.untar.dir}/site"/>
+ <property name="site.dir"
location="${release.untar.dir}/site/r${hadoop.version}"/>
+ <property name="release.bin.dir" location="${release.untar.dir}/bin"/>
+ <property name="check.native.binaries" value="true"/>
+ <property name="arm.artifact.dir"
location="${arm.hadoop.dir}/target/artifacts/" />
+ <property name="arm.dir" location="${downloads.dir}/arm" />
+ <property name="arm.binary.src"
location="${arm.artifact.dir}/hadoop-${hadoop.version}.tar.gz" />
+ <property name="arm.binary.prefix"
value="hadoop-${hadoop.version}-aarch64" />
+ <property name="arm.binary.filename" value="${arm.binary.prefix}.tar.gz" />
+ <property name="arm.binary" location="${arm.dir}/${arm.binary.filename}" />
+ <property name="arm.binary.sha512" location="${arm.binary}.sha512" />
+ <property name="arm.binary.asc" location="${arm.binary}.asc" />
- <property name="staging.commit.msg" value="${jira.id}. Hadoop ${rc.name}
built from ${git.commit.id}" />
+ <property name="staged.artifacts.dir"
location="${staging.dir}/${rc.dirname}"/>
- <property name="svn.apache.dist" value="https://dist.apache.org/"/>
- <property name="svn.staging.url"
value="${svn.apache.dist}/repos/dist/dev/hadoop/${rc.dirname}"/>
- <property name="svn.production.url"
value="${svn.apache.dist}/repos/dist/release/hadoop/common/${release}"/>
- <property name="production.commit.msg" value="${jira.id}. Releasing Hadoop
${hadoop.version}" />
+ <property name="staging.commit.msg" value="${jira.id}. Hadoop ${rc.name}
built from ${git.commit.id}" />
- <property name="bin-untar.dir" location="target/bin-untar/${release}"/>
+ <property name="svn.apache.dist" value="https://dist.apache.org/"/>
+ <property name="svn.staging.url"
value="${svn.apache.dist}/repos/dist/dev/hadoop/${rc.dirname}"/>
+ <property name="svn.production.url"
value="${svn.apache.dist}/repos/dist/release/hadoop/common/${release}"/>
+ <property name="production.commit.msg" value="${jira.id}. Releasing Hadoop
${hadoop.version}" />
- <target name="init">
+ <property name="bin-untar.dir" location="target/bin-untar/${release}"/>
+ <!-- exec() where failures fail the build. -->
<presetdef name="x">
<exec failonerror="true"/>
</presetdef>
@@ -131,43 +166,35 @@
<!-- require a dir to exist. -->
<macrodef name="require-dir">
<attribute name="path" />
- <sequential>
- <fail message="dir missing: @{path}">
- <condition>
- <not>
- <available file="@{path}"/>
- </not>
- </condition>
- </fail>
- </sequential>
+ <sequential>
+ <fail message="dir missing: @{path}">
+ <condition>
+ <not>
+ <available file="@{path}"/>
+ </not>
+ </condition>
+ </fail>
+ </sequential>
</macrodef>
<!-- require a file to exist -->
<macrodef name="require-file">
<attribute name="path" />
- <sequential>
- <fail message="file missing: @{path}">
- <condition>
- <not>
- <available file="@{path}"/>
- </not>
- </condition>
- </fail>
- </sequential>
+ <sequential>
+ <fail message="file missing: @{path}">
+ <condition>
+ <not>
+ <available file="@{path}"/>
+ </not>
+ </condition>
+ </fail>
+ </sequential>
</macrodef>
<presetdef name="verify-release-dir">
<require-dir path="${release.dir}" />
</presetdef>
- <macrodef name="require">
- <attribute name="p" />
- <sequential>
- <fail unless="@{p}" message="unset property @{p}" />
- </sequential>
- </macrodef>
-
-
<mkdir dir="${downloads.dir}"/>
<property name="scp.source"
@@ -184,7 +211,7 @@
Fetching and validating artifacts in ${release.dir}
release.dir=${release.dir}
- nexus.staging.url=${nexus.staging.url}
+ asf.staging.url=${asf.staging.url}
scp.source=${scp.source}
http.source=${http.source}
@@ -205,6 +232,13 @@
</echo>
</target>
+ <!--
+ This is just here to stop problems if you double type ant.
+ -->
+ <target name="ant">
+ <echo>duplicate ant on the command line</echo>
+ </target>
+
<target name="clean"
description="clean up target/ dir">
<!-- Delete the ${dist} directory trees -->
@@ -212,10 +246,6 @@
<delete dir="${downloads.dir}"/>
</target>
- <target name="ant">
- <echo>duplicate ant on the command line</echo>
- </target>
-
<target name="purge-from-maven" depends="init"
description="purge all artifacts from the maven repo">
<property name="mvn.repo"
@@ -339,10 +369,14 @@
</target>
+ <!-- ========================================================= -->
+ <!-- Staging operations -->
+ <!-- ========================================================= -->
+
<target name="stage" depends="init"
description="move the RC to the svn staging dir">
- <fail message="unset: staging.dir" unless="staging.dir"/>
+ <require p="staging.dir"/>
<echo>moving ${release.dir} to ${staging.dir}</echo>
<move
@@ -364,8 +398,8 @@
<target name="staging-init"
description="init svn staging"
depends="init">
- <fail unless="jira.id"/>
- <fail unless="git.commit.id"/>
+ <require p="jira.id"/>
+ <require p="git.commit.id"/>
<echo>
staging.commit.msg = ${staging.commit.msg}
production.commit.msg = ${production.commit.msg}
@@ -490,8 +524,8 @@
Set the git commit number in git.commit.id
</fail>
- <fail unless="nexus.staging.url">
- Set the nexus staging repository URL in nexus.staging.url
+ <fail unless="asf.staging.url">
+ Set the apache staging URL in asf.staging.url
</fail>
<loadfile property="message.txt"
@@ -512,8 +546,30 @@ Message is in file ${message.out}
</target>
+ <!-- ========================================================= -->
+ <!-- Spark -->
+ <!-- ========================================================= -->
+
+
+ <!--
+ spark-specific init options etc
+ -->
+ <target name="spark.init" if="spark.dir"
+ depends="init">
+
+
+ <!-- for spark builds -->
+ <property name="spark.version" value="3.5.0-SNAPSHOT"/>
+ <!-- spark excludes hadoop-aws dependency and forces in their own
+ this fixes it to be in sync with hadoop
+ see https://issues.apache.org/jira/browse/SPARK-39969
+ -->
+ <property name="spark.aws.version" value="1.12.316"/>
+
+ </target>
+
<target name="spark.build" if="spark.dir"
- depends="init"
+ depends="spark.init"
description="build the spark release in spark.dir">
<echo>
@@ -601,6 +657,10 @@ Message is in file ${message.out}
</mvn>
</target>
+ <!-- ========================================================= -->
+ <!-- Google GCS. Java 11+ -->
+ <!-- ========================================================= -->
+
<target name="gcs.build" if="bigdata-interop.dir"
depends="init"
@@ -638,6 +698,12 @@ Message is in file ${message.out}
</mvn>
</target>
+ <!-- ========================================================= -->
+ <!-- HBoss: hbase filesystem wrapper -->
+ <!-- uses aws sdk APIs for its mocking -->
+ <!-- ========================================================= -->
+
+
<target name="hboss.build" if="hboss.dir"
depends="init"
description="Build the hboss artifacts">
@@ -658,6 +724,7 @@ Message is in file ${message.out}
<arg value="-DskipTests"/>
</mvn>
</target>
+
<target name="hboss.test" if="hboss.dir"
depends="init"
description="Build and test the hboss artifacts">
@@ -679,6 +746,10 @@ Message is in file ${message.out}
</mvn>
</target>
+ <!-- ========================================================= -->
+ <!-- https://github.com/steveloughran/cloudstore -->
+ <!-- ========================================================= -->
+
<target name="cloudstore.build" if="cloudstore.dir"
depends="init"
@@ -688,15 +759,22 @@ Message is in file ${message.out}
if this is done with java11, it shouldn't be released.
</echo>
+ <require p="cloudstore.profile"/>
+
<mvn dir="${cloudstore.dir}">
<arg value="-Psnapshots-and-staging"/>
- <arg value="-Pextra"/>
+ <arg value="-P${cloudstore.profile}"/>
<arg value="-Dhadoop.version=${hadoop.version}"/>
<arg value="clean"/>
<arg value="package"/>
+ <arg value="test"/>
</mvn>
</target>
+ <!-- ========================================================= -->
+ <!-- Hadoop FS API shim WiP -->
+ <!-- ========================================================= -->
+
<target name="fsapi.test" if="fs-api-shim.dir"
depends="init"
@@ -714,6 +792,10 @@ Message is in file ${message.out}
</mvn>
</target>
+ <!-- ========================================================= -->
+ <!-- Parquet -->
+ <!-- ========================================================= -->
+
<target name="parquet.build" if="parquet.dir"
depends="init"
description="Build parquet">
@@ -725,8 +807,8 @@ Message is in file ${message.out}
<mvn dir="${parquet.dir}">
<arg value="-Dhadoop.version=${hadoop.version}"/>
<arg value="-Pasf-staging"/>
- <arg value="--pl"/>
- <arg value="parquet-hadoop"/>
+<!-- <arg value="--pl"/>
+ <arg value="parquet-hadoop"/>-->
<arg value="clean"/>
<arg value="install"/>
<arg value="-DskipTests"/>
@@ -734,7 +816,7 @@ Message is in file ${message.out}
</target>
<target name="parquet.test" if="parquet.dir"
- depends="init"
+ depends="parquet.build"
description="Build and test the parquet-hadoop module">
<echo>
Build and test parquet-hadoop.
@@ -749,12 +831,18 @@ Message is in file ${message.out}
</mvn>
</target>
+ <!-- ========================================================= -->
+ <!-- Avro. Needs lots of jdk installations. -->
+ <!-- ========================================================= -->
+
<target name="avro.build" if="avro.dir"
depends="init"
description="Build avro">
<echo>
Build avro.
- Relies on the user having an asf-staging profile.
+ * Relies on the user having an asf-staging profile.
+ * needs a java8 toolchain set up
+ https://maven.apache.org/guides/mini/guide-using-toolchains.html
</echo>
<mvn dir="${avro.dir}/lang/java">
<arg value="-Dhadoop.version=${hadoop.version}"/>
@@ -765,6 +853,10 @@ Message is in file ${message.out}
</mvn>
</target>
+ <!-- ========================================================= -->
+ <!-- Release targets -->
+ <!-- ========================================================= -->
+
<!-- Fetch the artifacts from an http repo, for validating someone else's
release.
the download is into incoming.dir, then after a cleanup copied into
release.dir; -->
@@ -798,6 +890,16 @@ Message is in file ${message.out}
<echo>copied http downloaded artifacts to ${release.dir}</echo>
</target>
+ <target name="release.fetch.arm" depends="init"
+ description="fetch the arm artifacts from a remote http site">
+ <fail unless="http.source"/>
+ <mkdir dir="${incoming.dir}"/>
+ <get src="${http.source}/${arm.binary.filename}"
+ dest="${incoming.dir}"
+ verbose="true"
+ usetimestamp="true"/>
+ </target>
+
<target name="release.site.untar" depends="release.dir.check"
description="untar the release site">
<echo>untarring site ${release.dir}/${release}-site.tar.gz</echo>
diff --git a/pom.xml b/pom.xml
index a21de82..13dffbc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -37,7 +37,7 @@
<file.encoding>UTF-8</file.encoding>
<javac.version>1.8</javac.version>
<enforced.java.version>${javac.version}</enforced.java.version>
- <maven-antrun-plugin.version>1.7</maven-antrun-plugin.version>
+ <maven-antrun-plugin.version>3.1.0</maven-antrun-plugin.version>
<hadoop.version>3.4.0</hadoop.version>
@@ -278,48 +278,69 @@
<!-- clean lifecycle, see
https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle
-->
<plugin>
<artifactId>maven-clean-plugin</artifactId>
- <version>3.1.0</version>
+ <version>3.3.2</version>
</plugin>
<!-- default lifecycle, jar packaging: see
https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging
-->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
- <version>3.0.2</version>
+ <version>3.3.1</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
- <version>3.8.0</version>
+ <version>3.12.1</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
- <version>2.22.1</version>
+ <version>3.2.5</version>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
- <version>3.0.2</version>
+ <version>3.3.0</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
- <version>2.5.2</version>
+ <version>3.1.1</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
- <version>2.8.2</version>
+ <version>3.1.1</version>
</plugin>
<!-- site lifecycle, see
https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle
-->
<plugin>
<artifactId>maven-site-plugin</artifactId>
- <version>3.7.1</version>
+ <version>4.0.0-M13</version>
</plugin>
<plugin>
<artifactId>maven-project-info-reports-plugin</artifactId>
- <version>3.0.0</version>
+ <version>3.5.0</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<version>${maven-antrun-plugin.version}</version>
</plugin>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-enforcer-plugin</artifactId>
+ <version>3.4.1</version>
+ <executions>
+ <execution>
+ <id>enforce-maven</id>
+ <goals>
+ <goal>enforce</goal>
+ </goals>
+ <configuration>
+ <rules>
+ <requireMavenVersion>
+ <version>3.4.0</version>
+ </requireMavenVersion>
+ </rules>
+ </configuration>
+ </execution>
+ </executions>
+ </plugin>
</plugins>
+
</pluginManagement>
</build>
diff --git a/release.properties b/release.properties
new file mode 100644
index 0000000..bb7dbf4
--- /dev/null
+++ b/release.properties
@@ -0,0 +1,18 @@
+# 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
+#
+# https://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.
+
+# File to git-managed release info.
+release.property.file=src/releases/release-3.4.0.properties
\ No newline at end of file
diff --git a/src/releases/release-3.4.0.properties
b/src/releases/release-3.4.0.properties
new file mode 100644
index 0000000..f874372
--- /dev/null
+++ b/src/releases/release-3.4.0.properties
@@ -0,0 +1,36 @@
+# 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
+#
+# https://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.
+
+# property file for 3.4.0
+jira.id=HADOOP-19018
+jira.title=Release 3.4.0
+hadoop.version=3.4.0
+rc=RC2
+previous.version=3.3.6
+release.branch=3.4
+git.commit.id=88fbe62f27e
+amd.src.dir=https://dist.apache.org/repos/dist/dev/hadoop/hadoop-3.4.0-RC2/
+arm.src.dir=${amd.src.dir}
+http.source=${amd.src.dir}
+
+release.short=hadoop-${hadoop.version}
+release=hadoop-${hadoop.version}
+rc.dirname=${release}
+
+staging.url=https://repository.apache.org/content/repositories/orgapachehadoop-1402
+
+cloudstore.profile=sdk2
+
diff --git a/src/text/core-announcement.txt b/src/text/core-announcement.txt
index 524f5db..683af9f 100644
--- a/src/text/core-announcement.txt
+++ b/src/text/core-announcement.txt
@@ -15,14 +15,14 @@ Key changes include
release -and therefore the maven artifacts.
* Security fixes in Hadoop's own code.
-Users of Apache Hadoop ${previous.ver} and earlier should upgrade to
+Users of Apache Hadoop ${previous.version} and earlier should upgrade to
this release.
All users are encouraged to read the [overview of major changes][1]
-since release ${previous.ver}.
+since release ${previous.version}.
For details of bug fixes, improvements, and other enhancements since
-the previous ${previous.ver} release, please check [release notes][2]
+the previous ${previous.version} release, please check [release notes][2]
and [changelog][3].
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