HADOOP-14089. Automated checking for malformed client. Contributed by Sean Busbey.

hadoop-client-modules/hadoop-client-api/pom.xml

@@ -182,6 +182,21 @@
                         <exclude>io/serializations</exclude>
                       </excludes>
                     </relocation>
+                    <!-- JSRs that haven't made it to inclusion in J2SE -->
+                    <relocation>
+                      <pattern>javax/el/</pattern>
+                      <shadedPattern>${shaded.dependency.prefix}.javax.el.</shadedPattern>
+                      <excludes>
+                        <exclude>**/pom.xml</exclude>
+                      </excludes>
+                    </relocation>
+                    <relocation>
+                      <pattern>javax/cache/</pattern>
+                      <shadedPattern>${shaded.dependency.prefix}.javax.cache.</shadedPattern>
+                      <excludes>
+                        <exclude>**/pom.xml</exclude>
+                      </excludes>
+                    </relocation>
                     <relocation>
                       <pattern>javax/servlet/</pattern>
                       <shadedPattern>${shaded.dependency.prefix}.javax.servlet.</shadedPattern>
@@ -189,6 +204,13 @@
                         <exclude>**/pom.xml</exclude>
                       </excludes>
                     </relocation>
+                    <relocation>
+                      <pattern>javax/ws/</pattern>
+                      <shadedPattern>${shaded.dependency.prefix}.javax.ws.</shadedPattern>
+                      <excludes>
+                        <exclude>**/pom.xml</exclude>
+                      </excludes>
+                    </relocation>
                     <relocation>
                       <pattern>net/</pattern>
                       <shadedPattern>${shaded.dependency.prefix}.net.</shadedPattern>
@@ -199,6 +221,11 @@
                         <exclude>net/topology/**/*</exclude>
                       </excludes>
                     </relocation>
+                    <!-- okio declares a top level package instead of nested -->
+                    <relocation>
+                      <pattern>okio/</pattern>
+                      <shadedPattern>${shaded.dependency.prefix}.okio.</shadedPattern>
+                    </relocation>
                   </relocations>
                   <transformers>
                     <!-- Needed until MSHADE-182 -->

hadoop-client-modules/hadoop-client-check-invariants/pom.xml

@@ -25,7 +25,13 @@
   <version>3.1.0-SNAPSHOT</version>
   <packaging>pom</packaging>
 
-  <description>Enforces our invariants for the api and runtime client modules.</description>
+  <description>
+  Enforces our invariants for the api and runtime client modules.
+  E.g. that modules have a specific set of transitive dependencies
+  and shaded artifacts only contain classes that are in particular
+  packages. Does the enforcement through the maven-enforcer-plugin
+  and an integration test.
+  </description>
   <name>Apache Hadoop Client Packaging Invariants</name>
 
   <properties>
@@ -82,6 +88,8 @@
                     <exclude>commons-logging:commons-logging</exclude>
                     <!-- Leave log4j unshaded so downstream users can configure logging. -->
                     <exclude>log4j:log4j</exclude>
+                    <!-- Leave javax annotations we need exposed -->
+                    <exclude>com.google.code.findbugs:jsr305</exclude>
                   </excludes>
                 </banTransitiveDependencies>
                 <banDuplicateClasses>
@@ -97,7 +105,6 @@
                   </dependencies>
                 </banDuplicateClasses>
               </rules>
-<!-- TODO we need a rule for "we don't have classes that are outside of the org.apache.hadoop package" -->
 <!-- TODO we need a rule for "the constants in this set of classes haven't been shaded / don't have this prefix"
      Manually checking the set of Keys that look like packages we relocate:
 
@@ -116,6 +123,69 @@
           </execution>
         </executions>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-resources-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>test-resources</id>
+            <phase>pre-integration-test</phase>
+            <goals>
+              <goal>testResources</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-dependency-plugin</artifactId>
+        <executions>
+          <!-- create a maven pom property that has all of our dependencies.
+             below in the integration-test phase we'll pass this list
+             of paths to our jar checker script.
+          -->
+          <execution>
+            <id>put-client-artifacts-in-a-property</id>
+            <phase>pre-integration-test</phase>
+            <goals>
+              <goal>build-classpath</goal>
+            </goals>
+            <configuration>
+              <excludeTransitive>true</excludeTransitive>
+              <outputProperty>hadoop-client-artifacts</outputProperty>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+      <!--
+        Check that we actually relocated everything we included.
+        It's critical that we don't ship third party dependencies that haven't
+        been relocated under our pacakge space, since this will lead to
+        difficult to debug classpath errors for downstream. Unfortunately, that
+        means inspecting all the jars.
+        -->
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>exec-maven-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>check-jar-contents</id>
+            <phase>integration-test</phase>
+            <goals>
+              <goal>exec</goal>
+            </goals>
+            <configuration>
+              <executable>${shell-executable}</executable>
+              <workingDirectory>${project.build.testOutputDirectory}</workingDirectory>
+              <requiresOnline>false</requiresOnline>
+              <arguments>
+                <argument>ensure-jars-have-correct-contents.sh</argument>
+                <argument>${hadoop-client-artifacts}</argument>
+              </arguments>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
     </plugins>
   </build>
 

hadoop-client-modules/hadoop-client-check-invariants/src/test/resources/ensure-jars-have-correct-contents.sh

@@ -0,0 +1,82 @@
+#!/usr/bin/env bash
+# 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.
+
+# Usage: $0 [/path/to/some/example.jar:/path/to/another/example/created.jar]
+#
+# accepts a single command line argument with a colon separated list of
+# paths to jars to check. Iterates through each such passed jar and checks
+# all the contained paths to make sure they follow the below constructed
+# safe list.
+
+# we have to allow the directories that lead to the org/apache/hadoop dir
+allowed_expr="(^org/$|^org/apache/$"
+# We allow the following things to exist in our client artifacts:
+#   * classes in packages that start with org.apache.hadoop, which by
+#     convention should be in a path that looks like org/apache/hadoop
+allowed_expr+="|^org/apache/hadoop/"
+#   * whatever in the "META-INF" directory
+allowed_expr+="|^META-INF/"
+#   * whatever under the "webapps" directory; for things shipped by yarn
+allowed_expr+="|^webapps/"
+#   * Hadoop's default configuration files, which have the form
+#     "_module_-default.xml"
+allowed_expr+="|^[^-]*-default.xml$"
+#   * Hadoop's versioning properties files, which have the form
+#     "_module_-version-info.properties"
+allowed_expr+="|^[^-]*-version-info.properties$"
+#   * Hadoop's application classloader properties file.
+allowed_expr+="|^org.apache.hadoop.application-classloader.properties$"
+# public suffix list used by httpcomponents
+allowed_expr+="|^mozilla/$"
+allowed_expr+="|^mozilla/public-suffix-list.txt$"
+# Comes from commons-configuration, not sure if relocatable.
+allowed_expr+="|^properties.dtd$"
+allowed_expr+="|^PropertyList-1.0.dtd$"
+# Comes from Ehcache, not relocatable at top level due to limitation
+# of shade plugin AFAICT
+allowed_expr+="|^ehcache-core.xsd$"
+allowed_expr+="|^ehcache-107ext.xsd$"
+# Comes from kerby's kerb-simplekdc, not relocatable since at top level
+allowed_expr+="|^krb5-template.conf$"
+allowed_expr+="|^krb5_udp-template.conf$"
+# Jetty uses this style sheet for directory listings. TODO ensure our
+# internal use of jetty disallows directory listings and remove this.
+allowed_expr+="|^jetty-dir.css$"
+
+allowed_expr+=")"
+declare -i bad_artifacts=0
+declare -a bad_contents
+IFS=: read -r -d '' -a artifact_list < <(printf '%s\0' "$1")
+for artifact in "${artifact_list[@]}"; do
+  bad_contents=($(jar tf "${artifact}" | grep -v -E "${allowed_expr}"))
+  if [ ${#bad_contents[@]} -gt 0 ]; then
+    echo "[ERROR] Found artifact with unexpected contents: '${artifact}'"
+    echo "    Please check the following and either correct the build or update"
+    echo "    the allowed list with reasoning."
+    echo ""
+    for bad_line in "${bad_contents[@]}"; do
+      echo "    ${bad_line}"
+    done
+    bad_artifacts=${bad_artifacts}+1
+  else
+    echo "[INFO] Artifact looks correct: '$(basename "${artifact}")'"
+  fi
+done
+
+if [ "${bad_artifacts}" -gt 0 ]; then
+  exit 1
+fi

hadoop-client-modules/hadoop-client-check-test-invariants/pom.xml

@@ -25,7 +25,13 @@
   <version>3.1.0-SNAPSHOT</version>
   <packaging>pom</packaging>
 
-  <description>Enforces our invariants for the testing client modules.</description>
+  <description>
+  Enforces our invariants for the test client modules.
+  E.g. that modules have a specific set of transitive dependencies
+  and shaded artifacts only contain classes that are in particular
+  packages. Does the enforcement through the maven-enforcer-plugin
+  and an integration test.
+  </description>
   <name>Apache Hadoop Client Packaging Invariants for Test</name>
 
   <properties>
@@ -90,6 +96,8 @@
                     <exclude>junit:junit</exclude>
                     <!-- JUnit brings in hamcrest -->
                     <exclude> org.hamcrest:hamcrest-core</exclude>
+                    <!-- Leave javax annotations we need exposed -->
+                    <exclude>com.google.code.findbugs:jsr305</exclude>
                   </excludes>
                 </banTransitiveDependencies>
                 <banDuplicateClasses>
@@ -105,7 +113,6 @@
                   </dependencies>
                 </banDuplicateClasses>
               </rules>
-<!-- TODO we need a rule for "we don't have classes that are outside of the org.apache.hadoop package" -->
 <!-- TODO we need a rule for "the constants in this set of classes haven't been shaded / don't have this prefix"
      Manually checking the set of Keys that look like packages we relocate:
 
@@ -124,6 +131,71 @@
           </execution>
         </executions>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-resources-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>test-resources</id>
+            <phase>pre-integration-test</phase>
+            <goals>
+              <goal>testResources</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+      <!-- create a maven pom property that has all of our dependencies.
+         below in the integration-test phase we'll pass this list
+         of paths to our jar checker script.
+      -->
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-dependency-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>put-client-artifacts-in-a-property</id>
+            <phase>pre-integration-test</phase>
+            <goals>
+              <goal>build-classpath</goal>
+            </goals>
+            <configuration>
+              <!-- these two get covered in our non-test invariant check -->
+              <excludeArtifactIds>hadoop-client-api,hadoop-client-runtime</excludeArtifactIds>
+              <excludeTransitive>true</excludeTransitive>
+              <outputProperty>hadoop-client-artifacts</outputProperty>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+      <!--
+        Check that we actually relocated everything we included.
+        It's critical that we don't ship third party dependencies that haven't
+        been relocated under our pacakge space, since this will lead to
+        difficult to debug classpath errors for downstream. Unfortunately, that
+        means inspecting all the jars.
+        -->
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>exec-maven-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>check-jar-contents</id>
+            <phase>integration-test</phase>
+            <goals>
+              <goal>exec</goal>
+            </goals>
+            <configuration>
+              <executable>${shell-executable}</executable>
+              <workingDirectory>${project.build.testOutputDirectory}</workingDirectory>
+              <requiresOnline>false</requiresOnline>
+              <arguments>
+                <argument>ensure-jars-have-correct-contents.sh</argument>
+                <argument>${hadoop-client-artifacts}</argument>
+              </arguments>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
     </plugins>
   </build>
 

hadoop-client-modules/hadoop-client-check-test-invariants/src/test/resources/ensure-jars-have-correct-contents.sh

@@ -0,0 +1,70 @@
+#!/usr/bin/env bash
+# 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.
+
+# Usage: $0 [/path/to/some/example.jar:/path/to/another/example/created.jar]
+#
+# accepts a single command line argument with a colon separated list of
+# paths to jars to check. Iterates through each such passed jar and checks
+# all the contained paths to make sure they follow the below constructed
+# safe list.
+
+# we have to allow the directories that lead to the org/apache/hadoop dir
+allowed_expr="(^org/$|^org/apache/$"
+# We allow the following things to exist in our client artifacts:
+#   * classes in packages that start with org.apache.hadoop, which by
+#     convention should be in a path that looks like org/apache/hadoop
+allowed_expr+="|^org/apache/hadoop/"
+#   * whatever in the "META-INF" directory
+allowed_expr+="|^META-INF/"
+#   * whatever under the "webapps" directory; for minicluster UIs
+allowed_expr+="|^webapps/"
+#   * Hadoop's default configuration files, which have the form
+#     "_module_-default.xml"
+allowed_expr+="|^[^-]*-default.xml$"
+#   * Hadoop's versioning properties files, which have the form
+#     "_module_-version-info.properties"
+allowed_expr+="|^[^-]*-version-info.properties$"
+#   * Hadoop's application classloader properties file.
+allowed_expr+="|^org.apache.hadoop.application-classloader.properties$"
+#   * Used by JavaSandboxLinuxContainerRuntime as a default, loaded
+#     from root, so can't relocate. :(
+allowed_expr+="|^java.policy$"
+
+
+allowed_expr+=")"
+declare -i bad_artifacts=0
+declare -a bad_contents
+IFS=: read -r -d '' -a artifact_list < <(printf '%s\0' "$1")
+for artifact in "${artifact_list[@]}"; do
+  bad_contents=($(jar tf "${artifact}" | grep -v -E "${allowed_expr}"))
+  if [ ${#bad_contents[@]} -gt 0 ]; then
+    echo "[ERROR] Found artifact with unexpected contents: '${artifact}'"
+    echo "    Please check the following and either correct the build or update"
+    echo "    the allowed list with reasoning."
+    echo ""
+    for bad_line in "${bad_contents[@]}"; do
+      echo "    ${bad_line}"
+    done
+    bad_artifacts=${bad_artifacts}+1
+  else
+    echo "[INFO] Artifact looks correct: '$(basename "${artifact}")'"
+  fi
+done
+
+if [ "${bad_artifacts}" -gt 0 ]; then
+  exit 1
+fi

hadoop-client-modules/hadoop-client-minicluster/pom.xml

@@ -348,11 +348,6 @@
           <artifactId>jersey-servlet</artifactId>
       <optional>true</optional>
     </dependency>
-    <dependency>
-      <groupId>org.eclipse.jdt</groupId>
-      <artifactId>core</artifactId>
-      <optional>true</optional>
-    </dependency>
     <!-- skip org.apache.avro:avro-ipc because it doesn't look like hadoop-common actually uses it -->
     <dependency>
       <groupId>net.sf.kosmosfs</groupId>
@@ -595,6 +590,7 @@
                       <exclude>org.slf4j:slf4j-api</exclude>
                       <exclude>commons-logging:commons-logging</exclude>
                       <exclude>junit:junit</exclude>
+                      <exclude>com.google.code.findbugs:jsr305</exclude>
                       <!-- Keep optional runtime deps out of the shading -->
                       <exclude>org.apache.hadoop:hadoop-yarn-server-timelineservice</exclude>
                       <exclude>log4j:log4j</exclude>
@@ -656,6 +652,41 @@
                         <exclude>org/hamcrest/*.class</exclude>
                       </excludes>
                     </filter>
+                    <!-- skip grizzly internals we don't need to run. -->
+                    <filter>
+                      <artifact>org.glassfish.grizzly:grizzly-http-servlet</artifact>
+                      <excludes>
+                        <exclude>catalog.cat</exclude>
+                        <exclude>javaee_5.xsd</exclude>
+                        <exclude>javaee_6.xsd</exclude>
+                        <exclude>javaee_web_services_client_1_2.xsd</exclude>
+                        <exclude>javaee_web_services_client_1_3.xsd</exclude>
+                        <exclude>jsp_2_1.xsd</exclude>
+                        <exclude>jsp_2_2.xsd</exclude>
+                        <exclude>web-app_2_5.xsd</exclude>
+                        <exclude>web-app_3_0.xsd</exclude>
+                        <exclude>web-common_3_0.xsd</exclude>
+                        <exclude>xml.xsd</exclude>
+                      </excludes>
+                    </filter>
+                    <filter>
+                      <!-- skip jetty license info already incorporated into LICENSE/NOTICE -->
+                      <artifact>org.eclipse.jetty:*</artifact>
+                      <excludes>
+                        <exclude>about.html</exclude>
+                      </excludes>
+                    </filter>
+                    <filter>
+                      <artifact>org.apache.hadoop:*</artifact>
+                      <excludes>
+                        <!-- No shipping log4j configs in a downstream facing library -->
+                        <exclude>log4j.properties</exclude>
+                        <exclude>container-log4j.properties</exclude>
+                        <!-- keep optional runtime configuration out of the jar; downstream can provide -->
+                        <exclude>capacity-scheduler.xml</exclude>
+                        <exclude>krb5.conf</exclude>
+                      </excludes>
+                    </filter>
                   </filters>
                   <relocations>
                     <relocation>
@@ -738,6 +769,7 @@
                         <exclude>**/pom.xml</exclude>
                       </excludes>
                     </relocation>
+                    <!-- JSRs that haven't made it to inclusion in J2SE -->
                     <relocation>
                       <pattern>javax/el/</pattern>
                       <shadedPattern>${shaded.dependency.prefix}.javax.el.</shadedPattern>
@@ -745,6 +777,13 @@
                         <exclude>**/pom.xml</exclude>
                       </excludes>
                     </relocation>
+                    <relocation>
+                      <pattern>javax/cache/</pattern>
+                      <shadedPattern>${shaded.dependency.prefix}.javax.cache.</shadedPattern>
+                      <excludes>
+                        <exclude>**/pom.xml</exclude>
+                      </excludes>
+                    </relocation>
                     <relocation>
                       <pattern>javax/inject/</pattern>
                       <shadedPattern>${shaded.dependency.prefix}.javax.inject.</shadedPattern>
@@ -759,6 +798,13 @@
                         <exclude>**/pom.xml</exclude>
                       </excludes>
                     </relocation>
+                    <relocation>
+                      <pattern>javax/ws/</pattern>
+                      <shadedPattern>${shaded.dependency.prefix}.javax.ws.</shadedPattern>
+                      <excludes>
+                        <exclude>**/pom.xml</exclude>
+                      </excludes>
+                    </relocation>
                     <relocation>
                       <pattern>jersey/</pattern>
                       <shadedPattern>${shaded.dependency.prefix}.jersey.</shadedPattern>
@@ -776,6 +822,11 @@
                         <exclude>net/topology/**/*</exclude>
                       </excludes>
                     </relocation>
+                    <!-- okio declares a top level package instead of nested -->
+                    <relocation>
+                      <pattern>okio/</pattern>
+                      <shadedPattern>${shaded.dependency.prefix}.okio.</shadedPattern>
+                    </relocation>
                   </relocations>
                   <transformers>
                     <!-- Needed until MSHADE-182 -->

hadoop-client-modules/hadoop-client-runtime/pom.xml

@@ -94,6 +94,11 @@
       <artifactId>commons-logging</artifactId>
       <scope>runtime</scope>
     </dependency>
+    <dependency>
+      <groupId>com.google.code.findbugs</groupId>
+      <artifactId>jsr305</artifactId>
+      <scope>runtime</scope>
+    </dependency>
     <!-- Move log4j to optional, since it is needed for some pieces folks might not use:
          * one of the three custom log4j appenders we have
       -->
@@ -149,6 +154,9 @@
                       <exclude>commons-logging:commons-logging</exclude>
                       <!-- Leave log4j unshaded so downstream users can configure logging. -->
                       <exclude>log4j:log4j</exclude>
+                      <!-- Leave javax APIs that are stable -->
+                      <!-- the jdk ships part of the javax.annotation namespace, so if we want to relocate this we'll have to care it out by class :( -->
+                      <exclude>com.google.code.findbugs:jsr305</exclude>
                     </excludes>
                   </artifactSet>
                   <filters>
@@ -181,6 +189,28 @@
                         <exclude>META-INF/services/javax.*</exclude>
                       </excludes>
                     </filter>
+                    <filter>
+                      <!-- skip french localization -->
+                      <artifact>org.apache.commons:commons-math3</artifact>
+                      <excludes>
+                        <exclude>assets/org/apache/commons/math3/**/*</exclude>
+                      </excludes>
+                    </filter>
+                    <filter>
+                      <!-- skip jetty license info already incorporated into LICENSE/NOTICE -->
+                      <artifact>org.eclipse.jetty:*</artifact>
+                      <excludes>
+                        <exclude>about.html</exclude>
+                      </excludes>
+                    </filter>
+                    <filter>
+                      <!-- skip docs on formats used in kerby -->
+                      <artifact>org.apache.kerby:kerb-util</artifact>
+                      <excludes>
+                        <exclude>keytab.txt</exclude>
+                        <exclude>ccache.txt</exclude>
+                      </excludes>
+                    </filter>
                   </filters>
                   <relocations>
                     <relocation>
@@ -245,6 +275,7 @@
                         <exclude>io/serializations</exclude>
                       </excludes>
                     </relocation>
+                    <!-- JSRs that haven't made it to inclusion in J2SE -->
                     <relocation>
                       <pattern>javax/el/</pattern>
                       <shadedPattern>${shaded.dependency.prefix}.javax.el.</shadedPattern>
@@ -252,6 +283,13 @@
                         <exclude>**/pom.xml</exclude>
                       </excludes>
                     </relocation>
+                    <relocation>
+                      <pattern>javax/cache/</pattern>
+                      <shadedPattern>${shaded.dependency.prefix}.javax.cache.</shadedPattern>
+                      <excludes>
+                        <exclude>**/pom.xml</exclude>
+                      </excludes>
+                    </relocation>
                     <relocation>
                       <pattern>javax/servlet/</pattern>
                       <shadedPattern>${shaded.dependency.prefix}.javax.servlet.</shadedPattern>
@@ -259,6 +297,13 @@
                         <exclude>**/pom.xml</exclude>
                       </excludes>
                     </relocation>
+                    <relocation>
+                      <pattern>javax/ws/</pattern>
+                      <shadedPattern>${shaded.dependency.prefix}.javax.ws.</shadedPattern>
+                      <excludes>
+                        <exclude>**/pom.xml</exclude>
+                      </excludes>
+                    </relocation>
                     <relocation>
                       <pattern>net/</pattern>
                       <shadedPattern>${shaded.dependency.prefix}.net.</shadedPattern>
@@ -269,6 +314,11 @@
                         <exclude>net/topology/**/*</exclude>
                       </excludes>
                     </relocation>
+                    <!-- okio declares a top level package instead of nested -->
+                    <relocation>
+                      <pattern>okio/</pattern>
+                      <shadedPattern>${shaded.dependency.prefix}.okio.</shadedPattern>
+                    </relocation>
                     <!-- probably not. -->
     <!--
                     <relocation>

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-shuffle/pom.xml

@@ -35,6 +35,13 @@
     <dependency>
       <groupId>org.apache.hadoop</groupId>
       <artifactId>hadoop-yarn-server-common</artifactId>
+      <!-- Not needed for client side -->
+      <exclusions>
+        <exclusion>
+          <groupId>com.microsoft.sqlserver</groupId>
+          <artifactId>mssql-jdbc</artifactId>
+        </exclusion>
+      </exclusions>
     </dependency>
     <dependency>
       <groupId>org.apache.hadoop</groupId>