DRILL-8533: Remove Hadoop 2 Support (#3018)

Author: cgivre

contrib/storage-phoenix/pom.xml

@@ -386,22 +386,6 @@
     </plugins>
   </build>
   <profiles>
-    <profile>
-      <id>hadoop-2</id>
-      <properties>
-        <skipTests>true</skipTests>
-      </properties>
-      <build>
-        <plugins>
-          <plugin>
-            <groupId>org.apache.felix</groupId>
-            <artifactId>maven-bundle-plugin</artifactId>
-            <version>5.1.9</version>
-            <extensions>true</extensions>
-          </plugin>
-        </plugins>
-      </build>
-    </profile>
     <profile>
       <!-- Disable unit tests for JDK 14+ until Phoenix 5.2.0+ is released.
       See PHOENIX-6723 for details.-->

docs/dev/Maven.md

@@ -31,11 +31,11 @@ Please make sure the names are concise, unique and easy to read.
 
 ## drill-jdbc-all JAR maxsize
 
-The file drill-jdbc-all-${project.version}.jar is outside the expected size range. 
-This is likely due to you adding new dependencies to a java-exec and not updating the excludes in this module. 
+The file drill-jdbc-all-${project.version}.jar is outside the expected size range.
+This is likely due to you adding new dependencies to a java-exec and not updating the excludes in this module.
 This is important as it minimizes the size of the dependency of Drill application users.
 
-The maxsize of the jar can be configured via `jdbc-all-jar.maxsize` property 
+The maxsize of the jar can be configured via `jdbc-all-jar.maxsize` property
 in [drill-jdbc-all](../../exec/jdbc-all/pom.xml)
 
 ## Maven profiles
@@ -49,15 +49,3 @@ To check the list of active Maven profiles:<br>
 ```
 mvn help:active-profiles
 ```
-
-### Hadoop 2
-
-To run Apache Drill on the Hadoop2 cluster [r2.4.1-r2.9.2](https://hadoop.apache.org/docs/) need to prepare 
-the Drill distribution by building the project with `hadoop-2` profile:
-```
-mvn clean install -Phadoop-2
-```
-or
-```
-mvn clean install -P hadoop-2
-```

exec/java-exec/pom.xml

@@ -668,28 +668,6 @@
         </dependency>
       </dependencies>
     </profile>
-    <profile>
-      <id>hadoop-2</id>
-      <build>
-        <plugins>
-          <plugin>
-            <groupId>org.apache.maven.plugins</groupId>
-            <artifactId>maven-surefire-plugin</artifactId>
-              <configuration>
-                <excludes>
-                  <!-- The following tests are flaky when run in the full Hadoop 2 CI. -->
-                  <exclude>**/TestBitBitKerberos.java</exclude>
-                  <exclude>**/TestUserBitKerberos.java</exclude>
-                  <exclude>**/TestUserBitKerberosEncryption.java</exclude>
-                  <exclude>**/TestDrillSpnegoAuthenticator.java</exclude>
-                  <exclude>**/TestSpnegoAuthentication.java</exclude>
-                  <exclude>**/TestSpnegoConfig.java</exclude>
-                </excludes>
-              </configuration>
-          </plugin>
-        </plugins>
-      </build>
-    </profile>
     <profile>
       <id>hdp</id>
       <dependencies>

exec/jdbc-all/pom.xml

@@ -900,12 +900,6 @@
         </plugins>
       </build>
     </profile>
-    <profile>
-      <id>hadoop-2</id>
-      <properties>
-        <jdbc-all-jar.maxsize>55000000</jdbc-all-jar.maxsize>
-      </properties>
-    </profile>
   </profiles>
 
 </project>