HDDS-11956. Deprecate/remove Hadoop 2 support

hadoop-hdds/docs/content/feature/Reconfigurability.md

@@ -108,8 +108,6 @@ Currently, only Datanode supports batch operations<br>
 > $ `ozone admin reconfig --service=DATANODE --in-service-datanodes properties`<br>
 Datanode: Node [hadoop1:19864] Reconfigurable properties:<br>
 ozone.example.config<br>
-Datanode: Node [hadoop2:19864] Reconfigurable properties:<br>
-ozone.example.config<br>
 Datanode: Node [hadoop3:19864] Reconfigurable properties:<br>
 ozone.example.config<br>
 Reconfig successfully 3 nodes, failure 0 nodes.<br>

hadoop-hdds/docs/content/feature/Reconfigurability.zh.md

@@ -108,8 +108,6 @@ ozone.example.config
 > $ `ozone admin reconfig --service=DATANODE --in-service-datanodes properties`<br>
 Datanode: Node [hadoop1:19864] Reconfigurable properties:<br>
 ozone.example.config<br>
-Datanode: Node [hadoop2:19864] Reconfigurable properties:<br>
-ozone.example.config<br>
 Datanode: Node [hadoop3:19864] Reconfigurable properties:<br>
 ozone.example.config<br>
 Reconfig successfully 3 nodes, failure 0 nodes.<br>

hadoop-hdds/docs/content/interface/O3fs.md

@@ -79,8 +79,6 @@ You also need to add the ozone-filesystem-hadoop3.jar file to the classpath:
 export HADOOP_CLASSPATH=/opt/ozone/share/ozone/lib/ozone-filesystem-hadoop3-*.jar:$HADOOP_CLASSPATH
 {{< /highlight >}}
 
-(Note: with Hadoop 2.x, use the `ozone-filesystem-hadoop2-*.jar`)
-
 Once the default Filesystem has been setup, users can run commands like ls, put, mkdir, etc.
 For example,
 

hadoop-hdds/docs/content/interface/O3fs.zh.md

@@ -75,8 +75,6 @@ ozone sh bucket create /volume/bucket
 export HADOOP_CLASSPATH=/opt/ozone/share/ozone/lib/ozone-filesystem-hadoop3-*.jar:$HADOOP_CLASSPATH
 {{< /highlight >}}
 
-(注意：当使用Hadoop 2.x时，应该在classpath上添加ozone-filesystem-hadoop2-*.jar)
-
 当配置了默认的文件系统之后，用户可以运行 ls、put、mkdir 等命令，比如：
 
 {{< highlight bash >}}
@@ -148,8 +146,6 @@ hdfs dfs -ls o3fs://bucket.volume.om-host.example.com:6789/key
 export HADOOP_CLASSPATH=/opt/ozone/share/ozone/lib/ozone-filesystem-hadoop3-*.jar:$HADOOP_CLASSPATH
 {{< /highlight >}}
 
-(注意：当使用Hadoop 2.x时，应该在classpath上添加ozone-filesystem-hadoop2-*.jar)
-
 当配置了默认的文件系统之后，用户可以运行 ls、put、mkdir 等命令，比如：
 
 {{< highlight bash >}}

hadoop-hdds/docs/content/interface/Ofs.md

@@ -85,8 +85,6 @@ You also need to add the ozone-filesystem-hadoop3.jar file to the classpath:
 export HADOOP_CLASSPATH=/opt/ozone/share/ozone/lib/ozone-filesystem-hadoop3-*.jar:$HADOOP_CLASSPATH
 {{< /highlight >}}
 
-(Note: with Hadoop 2.x, use the `ozone-filesystem-hadoop2-*.jar`)
-
 Once the default Filesystem has been setup, users can run commands like ls, put, mkdir, etc.
 For example:
 

hadoop-hdds/docs/content/interface/Ofs.zh.md

@@ -78,8 +78,6 @@ ofs://omservice/tmp/key1
 export HADOOP_CLASSPATH=/opt/ozone/share/ozone/lib/ozone-filesystem-hadoop3-*.jar:$HADOOP_CLASSPATH
 {{< /highlight >}}
 
-(请注意: 在 Hadoop 2.x 中, 请使用 `ozone-filesystem-hadoop2-*.jar`)
-
 当默认的文件系统被建立，用户可以运行命令例如ls，put，mkdir等。
 例如：
 

hadoop-ozone/dev-support/checks/coverage.sh

@@ -45,7 +45,7 @@ mkdir -p target/coverage-classes
 
 #Unzip all the classes from the last build
 find hadoop-ozone/dist/target/*/share/ozone/lib -name 'hdds-*.jar' -or -name 'ozone-*.jar' | \
-    grep -v -E 'shaded|hadoop2|hadoop3|tests' | \
+    grep -v -E 'shaded|hadoop3|tests' | \
     xargs -n1 unzip -o -q -d target/coverage-classes
 
 #Exclude some classes from the coverage

hadoop-ozone/dist/pom.xml

@@ -225,10 +225,6 @@
         </property>
       </activation>
       <dependencies>
-        <dependency>
-          <groupId>org.apache.ozone</groupId>
-          <artifactId>ozone-filesystem-hadoop2</artifactId>
-        </dependency>
         <dependency>
           <groupId>org.apache.ozone</groupId>
           <artifactId>ozone-filesystem-hadoop3</artifactId>

hadoop-ozone/dist/src/main/compose/common/hadoop-test.sh

@@ -25,8 +25,7 @@ export COMPOSE_FILE="${COMPOSE_FILE:-docker-compose.yaml}":../common/${extra_com
 : ${HADOOP_TEST_IMAGES:=""}
 
 if [[ -z "${HADOOP_TEST_IMAGES}" ]]; then
-  # hadoop2 and flokkr images are only available from Docker Hub
-  HADOOP_TEST_IMAGES="${HADOOP_TEST_IMAGES} apache/hadoop:${hadoop2.version}"
+  # flokkr images are only available from Docker Hub
   HADOOP_TEST_IMAGES="${HADOOP_TEST_IMAGES} flokkr/hadoop:3.1.2"
   HADOOP_TEST_IMAGES="${HADOOP_TEST_IMAGES} ${HADOOP_IMAGE}:${hadoop.version}"
 fi

hadoop-ozone/dist/src/main/license/jar-report.txt

@@ -221,7 +221,6 @@ share/ozone/lib/ozone-common.jar
 share/ozone/lib/ozone-csi.jar
 share/ozone/lib/ozone-datanode.jar
 share/ozone/lib/ozone-filesystem-common.jar
-share/ozone/lib/ozone-filesystem-hadoop2.jar
 share/ozone/lib/ozone-filesystem-hadoop3.jar
 share/ozone/lib/ozone-filesystem.jar
 share/ozone/lib/ozone-httpfsgateway.jar