Since we have different versions of Hadoop, sometimes we have to compile/deploy our codes against one but not the other. The ideal way is to setup profiles in maven to compile and create the artifacts accordingly.

Here is the profiles section defined in HBase project. You can create the same profiles in your pom.

To compile against one of these profiles,
mvn -Dhadoop.profile=1.1 clean compile

<profiles>
		<profile>
			<id>hadoop-1.1</id>
			<activation>
				<property>
					<name>hadoop.profile</name>
					<value>1.1</value>
				</property>
			</activation>
			<dependencies>
				<dependency>
					<groupId>org.apache.hadoop</groupId>
					<artifactId>hadoop-core</artifactId>
					<version>${hadoop-1.version}</version>
				</dependency>
				<dependency>
					<groupId>org.apache.hadoop</groupId>
					<artifactId>hadoop-test</artifactId>
					<version>${hadoop-1.version}</version>
				</dependency>
			</dependencies>
		</profile>
		<profile>
			<id>hadoop-1.0</id>
			<activation>
				<property>
					<name>hadoop.profile</name>
					<value>1.0</value>
				</property>
			</activation>
			<dependencies>
				<dependency>
					<groupId>org.apache.hadoop</groupId>
					<artifactId>hadoop-core</artifactId>
					<version>${hadoop-1.version}</version>
				</dependency>
				<dependency>
					<groupId>org.apache.hadoop</groupId>
					<artifactId>hadoop-test</artifactId>
					<version>${hadoop-1.version}</version>
				</dependency>
			</dependencies>
		</profile>
		<profile>
			<id>hadoop-2.0</id>
			<activation>
				<property>
					<name>!hadoop.profile</name>
				</property>
			</activation>
			<dependencyManagement>
				<dependencies>
					<dependency>
						<groupId>org.apache.hadoop</groupId>
						<artifactId>hadoop-mapreduce-client-core</artifactId>
						<version>${hadoop-2.version}</version>
					</dependency>
					<dependency>
						<groupId>org.apache.hadoop</groupId>
						<artifactId>hadoop-mapreduce-client-jobclient</artifactId>
						<version>${hadoop-2.version}</version>
					</dependency>
					<dependency>
						<groupId>org.apache.hadoop</groupId>
						<artifactId>hadoop-mapreduce-client-jobclient</artifactId>
						<version>${hadoop-2.version}</version>
						<type>test-jar</type>
						<scope>test</scope>
					</dependency>
					<dependency>
						<groupId>org.apache.hadoop</groupId>
						<artifactId>hadoop-hdfs</artifactId>
						<exclusions>
							<exclusion>
								<groupId>javax.servlet.jsp</groupId>
								<artifactId>jsp-api</artifactId>
							</exclusion>
							<exclusion>
								<groupId>javax.servlet</groupId>
								<artifactId>servlet-api</artifactId>
							</exclusion>
							<exclusion>
								<groupId>stax</groupId>
								<artifactId>stax-api</artifactId>
							</exclusion>
						</exclusions>
						<version>${hadoop-2.version}</version>
					</dependency>
					<dependency>
						<groupId>org.apache.hadoop</groupId>
						<artifactId>hadoop-hdfs</artifactId>
						<version>${hadoop-2.version}</version>
						<type>test-jar</type>
						<scope>test</scope>
						<exclusions>
							<exclusion>
								<groupId>javax.servlet.jsp</groupId>
								<artifactId>jsp-api</artifactId>
							</exclusion>
							<exclusion>
								<groupId>javax.servlet</groupId>
								<artifactId>servlet-api</artifactId>
							</exclusion>
							<exclusion>
								<groupId>stax</groupId>
								<artifactId>stax-api</artifactId>
							</exclusion>
						</exclusions>
					</dependency>
					<dependency>
						<groupId>org.apache.hadoop</groupId>
						<artifactId>hadoop-auth</artifactId>
						<version>${hadoop-2.version}</version>
					</dependency>
					<dependency>
						<groupId>org.apache.hadoop</groupId>
						<artifactId>hadoop-common</artifactId>
						<version>${hadoop-2.version}</version>
						<exclusions>
							<exclusion>
								<groupId>javax.servlet.jsp</groupId>
								<artifactId>jsp-api</artifactId>
							</exclusion>
							<exclusion>
								<groupId>javax.servlet</groupId>
								<artifactId>servlet-api</artifactId>
							</exclusion>
							<exclusion>
								<groupId>stax</groupId>
								<artifactId>stax-api</artifactId>
							</exclusion>
						</exclusions>
					</dependency>
					<dependency>
						<groupId>org.apache.hadoop</groupId>
						<artifactId>hadoop-client</artifactId>
						<version>${hadoop-2.version}</version>
					</dependency>
					<dependency>
						<groupId>org.apache.hadoop</groupId>
						<artifactId>hadoop-annotations</artifactId>
						<version>${hadoop-2.version}</version>
					</dependency>
					<!-- This was marked as test dep in earlier pom, but was scoped compile. 
						Where do we actually need it? -->
					<dependency>
						<groupId>org.apache.hadoop</groupId>
						<artifactId>hadoop-minicluster</artifactId>
						<version>${hadoop-2.version}</version>
						<exclusions>
							<exclusion>
								<groupId>javax.servlet.jsp</groupId>
								<artifactId>jsp-api</artifactId>
							</exclusion>
							<exclusion>
								<groupId>javax.servlet</groupId>
								<artifactId>servlet-api</artifactId>
							</exclusion>
							<exclusion>
								<groupId>stax</groupId>
								<artifactId>stax-api</artifactId>
							</exclusion>
						</exclusions>
					</dependency>
				</dependencies>
			</dependencyManagement>
		</profile>
	</profiles>