diff --git a/hyracks-fullstack/hyracks-fullstack-license/src/main/licenses/templates/hyracks-notice.ftl b/hyracks-fullstack/hyracks-fullstack-license/src/main/licenses/templates/hyracks-notice.ftl
index 8a2eb05..0cf9378 100644
--- a/hyracks-fullstack/hyracks-fullstack-license/src/main/licenses/templates/hyracks-notice.ftl
+++ b/hyracks-fullstack/hyracks-fullstack-license/src/main/licenses/templates/hyracks-notice.ftl
@@ -30,6 +30,9 @@
    <#assign noticeText = e.getKey()/>
    <#assign projects = e.getValue()/>
    <#list projects as p>
+     <#if p.shadowed>
+       <#continue/>
+     </#if>
 ${p.name} (${p.groupId}:${p.artifactId}:${p.version})
        <#list p.locations as loc>
 - ${loc}${p.jarName}
diff --git a/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/src/main/java/org/apache/hyracks/maven/license/DownloadLicensesMojo.java b/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/src/main/java/org/apache/hyracks/maven/license/DownloadLicensesMojo.java
index 293c08c..c8980cd 100644
--- a/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/src/main/java/org/apache/hyracks/maven/license/DownloadLicensesMojo.java
+++ b/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/src/main/java/org/apache/hyracks/maven/license/DownloadLicensesMojo.java
@@ -63,7 +63,7 @@
                 String fileName = entry.getLicense().getContentFile(false);
                 doDownload(timeoutMillis, i, url, fileName);
             });
-        } catch (ProjectBuildingException e) {
+        } catch (ProjectBuildingException | IOException e) {
             throw new MojoExecutionException("Unexpected exception: " + e, e);
         }
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/src/main/java/org/apache/hyracks/maven/license/GenerateFileMojo.java b/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/src/main/java/org/apache/hyracks/maven/license/GenerateFileMojo.java
index e69887c..b3a0bb2 100644
--- a/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/src/main/java/org/apache/hyracks/maven/license/GenerateFileMojo.java
+++ b/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/src/main/java/org/apache/hyracks/maven/license/GenerateFileMojo.java
@@ -39,6 +39,7 @@
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.Properties;
 import java.util.Set;
 import java.util.SortedMap;
 import java.util.SortedSet;
@@ -52,15 +53,22 @@
 import java.util.regex.Pattern;
 
 import org.apache.commons.io.IOUtils;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.commons.lang3.tuple.Pair;
 import org.apache.hyracks.maven.license.freemarker.IndentDirective;
 import org.apache.hyracks.maven.license.freemarker.LoadFileDirective;
 import org.apache.hyracks.maven.license.project.LicensedProjects;
 import org.apache.hyracks.maven.license.project.Project;
+import org.apache.maven.artifact.Artifact;
+import org.apache.maven.artifact.DefaultArtifact;
+import org.apache.maven.artifact.handler.ArtifactHandler;
+import org.apache.maven.artifact.handler.DefaultArtifactHandler;
 import org.apache.maven.plugin.MojoExecutionException;
 import org.apache.maven.plugin.MojoFailureException;
 import org.apache.maven.plugins.annotations.Mojo;
 import org.apache.maven.plugins.annotations.Parameter;
 import org.apache.maven.plugins.annotations.ResolutionScope;
+import org.apache.maven.project.MavenProject;
 import org.apache.maven.project.ProjectBuildingException;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
@@ -106,6 +114,9 @@
     @Parameter
     private boolean stripFoundationAssertionFromNotices = false;
 
+    @Parameter
+    private boolean validateShadowLicenses = false;
+
     private SortedMap<String, SortedSet<Project>> noticeMap;
 
     @java.lang.Override
@@ -139,11 +150,12 @@
         }
         licenseSpecs.addAll(urlToLicenseMap.values());
         for (LicenseSpec license : licenseSpecs) {
-            resolveArtifactContent(license, true);
+            resolveArtifactContent(license, true, false);
         }
     }
 
-    private String resolveArtifactContent(ArtifactSpec artifact, boolean bestEffort) throws IOException {
+    private String resolveArtifactContent(ArtifactSpec artifact, boolean bestEffort, boolean suppressWarning)
+            throws IOException {
         if (artifact.getContent() == null) {
             getLog().debug("Resolving content for " + artifact.getUrl() + " (" + artifact.getContentFile() + ")");
             File cFile = new File(artifact.getContentFile());
@@ -157,7 +169,9 @@
             }
             if (!cFile.exists()) {
                 if (!bestEffort) {
-                    getLog().warn("MISSING: content file (" + cFile + ") for url: " + artifact.getUrl());
+                    if (!suppressWarning) {
+                        getLog().warn("MISSING: content file (" + cFile + ") for url: " + artifact.getUrl());
+                    }
                     artifact.setContent("MISSING: " + artifact.getContentFile() + " (" + artifact.getUrl() + ")");
                 }
             } else {
@@ -264,10 +278,12 @@
             for (Project p : lps.getProjects()) {
                 String licenseText = p.getLicenseText();
                 if (licenseText == null) {
-                    warnUnlessFlag(p.gav(), IGNORE_MISSING_EMBEDDED_LICENSE,
-                            "Using license other than from within artifact: " + p.gav() + " (" + lps.getLicense()
-                                    + ")");
-                    licenseText = resolveArtifactContent(lps.getLicense(), false);
+                    if (validateProjectLicense(p)) {
+                        warnUnlessFlag(p.gav(), IGNORE_MISSING_EMBEDDED_LICENSE,
+                                "Using license other than from within artifact: " + p.gav() + " (" + lps.getLicense()
+                                        + ")");
+                    }
+                    licenseText = resolveArtifactContent(lps.getLicense(), false, !validateProjectLicense(p));
                 }
                 LicenseSpec spec = lps.getLicense();
                 if (spec.getDisplayName() == null) {
@@ -293,6 +309,10 @@
         licenseMap = licenseMap2;
     }
 
+    private boolean validateProjectLicense(Project p) {
+        return !p.isShadowed() || validateShadowLicenses;
+    }
+
     private Set<Project> getProjects() {
         Set<Project> projects = new HashSet<>();
         licenseMap.values().forEach(p -> projects.addAll(p.getProjects()));
@@ -305,9 +325,11 @@
             String noticeText = p.getNoticeText();
             if (noticeText == null && noticeOverrides.containsKey(p.gav())) {
                 String noticeUrl = noticeOverrides.get(p.gav());
-                warnUnlessFlag(p.gav(), IGNORE_NOTICE_OVERRIDE,
-                        "Using notice other than from within artifact: " + p.gav() + " (" + noticeUrl + ")");
-                p.setNoticeText(resolveArtifactContent(new NoticeSpec(noticeUrl), false));
+                if (validateProjectLicense(p)) {
+                    warnUnlessFlag(p.gav(), IGNORE_NOTICE_OVERRIDE,
+                            "Using notice other than from within artifact: " + p.gav() + " (" + noticeUrl + ")");
+                }
+                p.setNoticeText(resolveArtifactContent(new NoticeSpec(noticeUrl), false, p.isShadowed()));
             } else if (noticeText == null && !noticeOverrides.containsKey(p.gav())
                     && Boolean.TRUE.equals(getProjectFlag(p.gav(), IGNORE_NOTICE_OVERRIDE))) {
                 getLog().warn(p + " has IGNORE_NOTICE_OVERRIDE flag set, but no override defined...");
@@ -338,20 +360,20 @@
         // TODO(mblow): this will match *any* NOTICE[.txt] file located within the artifact- this seems way too liberal
         resolveArtifactFiles("NOTICE", IGNORE_MISSING_EMBEDDED_NOTICE, ALTERNATE_NOTICE_FILE,
                 entry -> entry.getName().matches("(.*/|^)" + "NOTICE" + "(.txt)?"), Project::setNoticeText,
-                text -> stripFoundationAssertionFromNotices ? FOUNDATION_PATTERN.matcher(text).replaceAll("") : text);
+                getNoticeFileContentTransformer(), !validateShadowLicenses);
     }
 
     private void resolveLicenseFiles() throws MojoExecutionException, IOException {
         // TODO(mblow): this will match *any* LICENSE[.txt] file located within the artifact- this seems way too liberal
         resolveArtifactFiles("LICENSE", IGNORE_MISSING_EMBEDDED_LICENSE, ALTERNATE_LICENSE_FILE,
                 entry -> entry.getName().matches("(.*/|^)" + "LICENSE" + "(.txt)?"), Project::setLicenseText,
-                UnaryOperator.identity());
+                UnaryOperator.identity(), !validateShadowLicenses);
     }
 
     private void resolveArtifactFiles(final String name, final ProjectFlag ignoreFlag,
             final ProjectFlag alternateFilenameFlag, final Predicate<JarEntry> filter,
-            final BiConsumer<Project, String> consumer, final UnaryOperator<String> contentTransformer)
-            throws MojoExecutionException, IOException {
+            final BiConsumer<Project, String> consumer, final UnaryOperator<String> contentTransformer,
+            boolean skipShadowed) throws MojoExecutionException, IOException {
         for (Project p : getProjects()) {
             File artifactFile = new File(p.getArtifactPath());
             if (!artifactFile.exists()) {
@@ -359,6 +381,9 @@
             } else if (!artifactFile.getName().endsWith(".jar")) {
                 getLog().info("Skipping unknown artifact file type: " + artifactFile);
                 continue;
+            } else if (skipShadowed && p.isShadowed()) {
+                getLog().info("Skipping shadowed project: " + p.gav());
+                continue;
             }
             String alternateFilename = (String) getProjectFlag(p.gav(), alternateFilenameFlag);
             Predicate<JarEntry> finalFilter =
@@ -404,4 +429,71 @@
         }
         return matches;
     }
+
+    private UnaryOperator<String> getNoticeFileContentTransformer() {
+        UnaryOperator<String> transformer;
+        if (stripFoundationAssertionFromNotices) {
+            transformer = text -> FOUNDATION_PATTERN.matcher(text).replaceAll("");
+        } else {
+            transformer = UnaryOperator.identity();
+        }
+        return transformer;
+    }
+
+    @java.lang.Override
+    protected void gatherProjectDependencies(MavenProject project,
+            Map<MavenProject, List<Pair<String, String>>> dependencyLicenseMap,
+            Map<String, MavenProject> dependencyGavMap) throws ProjectBuildingException, MojoExecutionException {
+        super.gatherProjectDependencies(project, dependencyLicenseMap, dependencyGavMap);
+        gatherShadowedDependencies(dependencyLicenseMap, dependencyGavMap);
+    }
+
+    @java.lang.Override
+    protected void processExtraDependencies(Map<MavenProject, List<Pair<String, String>>> dependencyLicenseMap,
+            Map<String, MavenProject> dependencyGavMap) throws ProjectBuildingException, MojoExecutionException {
+        super.processExtraDependencies(dependencyLicenseMap, dependencyGavMap);
+        gatherShadowedDependencies(dependencyLicenseMap, dependencyGavMap);
+    }
+
+    private void gatherShadowedDependencies(Map<MavenProject, List<Pair<String, String>>> dependencyLicenseMap,
+            Map<String, MavenProject> dependencyGavMap) throws MojoExecutionException, ProjectBuildingException {
+        Set<MavenProject> projects = new TreeSet<>(Comparator.comparing(MavenProject::getId));
+        projects.addAll(dependencyLicenseMap.keySet());
+        for (MavenProject p : projects) {
+            boolean finished = false;
+            File artifactFile = p.getArtifact().getFile();
+            if (!artifactFile.exists()) {
+                throw new MojoExecutionException("Artifact file " + artifactFile + " does not exist!");
+            } else if (!artifactFile.getName().endsWith(".jar")) {
+                getLog().info("Skipping unknown artifact file type: " + artifactFile);
+                finished = true;
+            }
+            if (!finished) {
+                try (JarFile jarFile = new JarFile(artifactFile)) {
+                    SortedMap<String, JarEntry> matches = gatherMatchingEntries(jarFile,
+                            entry -> entry.getName().matches("(.*/|^)" + "pom\\.properties"));
+                    if (!matches.isEmpty()) {
+                        for (JarEntry entry : matches.values()) {
+                            Properties props = new Properties();
+                            props.load(jarFile.getInputStream(entry));
+                            String groupId = props.getProperty("groupId");
+                            String artifactId = props.getProperty("artifactId");
+                            String version = props.getProperty("version");
+                            String gav = groupId + ":" + artifactId + ":" + version;
+                            if (!dependencyGavMap.containsKey(gav)) {
+                                getLog().info("adding " + gav + " (shadowed from " + p.getId() + ")");
+                                ArtifactHandler handler = new DefaultArtifactHandler("jar");
+                                String[] gavParts = StringUtils.split(gav, ':');
+                                Artifact manualDep = new DefaultArtifact(gavParts[0], gavParts[1], gavParts[2],
+                                        Artifact.SCOPE_COMPILE, "jar", null, handler);
+                                processArtifact(manualDep, dependencyLicenseMap, dependencyGavMap, true);
+                            }
+                        }
+                    }
+                } catch (IOException e) {
+                    throw new MojoExecutionException(e);
+                }
+            }
+        }
+    }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/src/main/java/org/apache/hyracks/maven/license/LicenseMojo.java b/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/src/main/java/org/apache/hyracks/maven/license/LicenseMojo.java
index 2206621..73cc695 100644
--- a/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/src/main/java/org/apache/hyracks/maven/license/LicenseMojo.java
+++ b/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/src/main/java/org/apache/hyracks/maven/license/LicenseMojo.java
@@ -70,6 +70,7 @@
 
 public abstract class LicenseMojo extends AbstractMojo {
 
+    private static final String SHADOWED_KEY = LicenseMojo.class.getName() + "_shadowed";
     @Parameter
     protected List<Override> overrides = new ArrayList<>();
 
@@ -249,7 +250,7 @@
         });
     }
 
-    protected void addDependenciesToLicenseMap() throws ProjectBuildingException {
+    protected void addDependenciesToLicenseMap() throws ProjectBuildingException, MojoExecutionException, IOException {
         Map<MavenProject, List<Pair<String, String>>> dependencyLicenseMap = gatherDependencies();
         dependencyLicenseMap.forEach((depProject, value) -> {
             Set<String> locations = dependencySets.isEmpty() ? Collections.singleton(location)
@@ -310,7 +311,9 @@
                 licenseUrl = fakeLicenseUrl;
             }
         }
-        addProject(new Project(depProject, depLocation, depProject.getArtifact().getFile()),
+        addProject(
+                new Project(depProject, depLocation, depProject.getArtifact().getFile(),
+                        Boolean.parseBoolean(String.valueOf(depProject.getContextValue(SHADOWED_KEY)))),
                 new LicenseSpec(licenseUrl, displayName), true);
     }
 
@@ -363,11 +366,13 @@
         }
     }
 
-    protected Map<MavenProject, List<Pair<String, String>>> gatherDependencies() throws ProjectBuildingException {
+    protected Map<MavenProject, List<Pair<String, String>>> gatherDependencies()
+            throws ProjectBuildingException, MojoExecutionException, IOException {
         Map<MavenProject, List<Pair<String, String>>> dependencyLicenseMap = new HashMap<>();
         Map<String, MavenProject> dependencyGavMap = new HashMap<>();
 
         gatherProjectDependencies(project, dependencyLicenseMap, dependencyGavMap);
+        processExtraDependencies(dependencyLicenseMap, dependencyGavMap);
         for (Override override : overrides) {
 
             // Collect both <gav></gav> and <gavs><gav></gav><gav></gav>...</gavs>
@@ -399,27 +404,40 @@
         return dependencyLicenseMap;
     }
 
-    private void gatherProjectDependencies(MavenProject project,
+    protected void gatherProjectDependencies(MavenProject project,
             Map<MavenProject, List<Pair<String, String>>> dependencyLicenseMap,
-            Map<String, MavenProject> dependencyGavMap) throws ProjectBuildingException {
+            Map<String, MavenProject> dependencyGavMap) throws ProjectBuildingException, MojoExecutionException {
         final Set<Artifact> dependencyArtifacts = project.getArtifacts();
         if (dependencyArtifacts != null) {
             for (Artifact depArtifact : dependencyArtifacts) {
-                processArtifact(depArtifact, dependencyLicenseMap, dependencyGavMap);
+                processArtifact(depArtifact, dependencyLicenseMap, dependencyGavMap, false);
             }
         }
-        for (String gav : extraDependencies) {
-            ArtifactHandler handler = new DefaultArtifactHandler("jar");
-            String[] gavParts = StringUtils.split(gav, ':');
-            Artifact manualDep = new DefaultArtifact(gavParts[0], gavParts[1], gavParts[2], Artifact.SCOPE_COMPILE,
-                    "jar", null, handler);
-            processArtifact(manualDep, dependencyLicenseMap, dependencyGavMap);
-        }
     }
 
-    private void processArtifact(Artifact depArtifact,
+    protected void processExtraDependencies(Map<MavenProject, List<Pair<String, String>>> dependencyLicenseMap,
+            Map<String, MavenProject> dependencyGavMap) throws ProjectBuildingException, MojoExecutionException {
+        for (String extraDependency : extraDependencies) {
+            String[] gavParts = StringUtils.split(extraDependency, ':');
+            String gav = gavParts[0] + ":" + gavParts[1] + ":" + gavParts[2];
+            if (!dependencyGavMap.containsKey(gav)) {
+                ArtifactHandler handler = new DefaultArtifactHandler("jar");
+                Artifact manualDep = new DefaultArtifact(gavParts[0], gavParts[1], gavParts[2], Artifact.SCOPE_COMPILE,
+                        "jar", null, handler);
+                boolean shadowed = false;
+                if (gavParts.length > 3) {
+                    shadowed = "shadowed".equals(gavParts[3]);
+                }
+                processArtifact(manualDep, dependencyLicenseMap, dependencyGavMap, shadowed);
+            } else {
+                getLog().warn("not adding extra dependency " + gav + " as it is already added");
+            }
+        }
+    }
+
+    protected void processArtifact(Artifact depArtifact,
             Map<MavenProject, List<Pair<String, String>>> dependencyLicenseMap,
-            Map<String, MavenProject> dependencyGavMap) throws ProjectBuildingException {
+            Map<String, MavenProject> dependencyGavMap, boolean shadowed) throws ProjectBuildingException {
         if (!excludedScopes.contains(depArtifact.getScope())) {
             MavenProject dep = resolveDependency(depArtifact);
             if (!depArtifact.isResolved()) {
@@ -442,6 +460,7 @@
                         : (license1.getName() != null ? license1.getName() : "LICENSE_EMPTY_NAME_URL");
                 licenseUrls.add(new ImmutablePair<>(url, license1.getName()));
             }
+            dep.setContextValue(SHADOWED_KEY, shadowed);
             dependencyLicenseMap.put(dep, licenseUrls);
         }
     }
diff --git a/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/src/main/java/org/apache/hyracks/maven/license/project/Project.java b/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/src/main/java/org/apache/hyracks/maven/license/project/Project.java
index e44914d..a755c05 100644
--- a/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/src/main/java/org/apache/hyracks/maven/license/project/Project.java
+++ b/hyracks-fullstack/hyracks/hyracks-maven-plugins/license-automation-plugin/src/main/java/org/apache/hyracks/maven/license/project/Project.java
@@ -41,6 +41,7 @@
     private String licenseText;
     private String sourcePointer;
     private String classifier;
+    private final boolean shadowed;
 
     @JsonIgnore
     private MavenProject mavenProject;
@@ -48,7 +49,7 @@
     public static final Comparator<Project> PROJECT_COMPARATOR =
             (o1, o2) -> o1.compareToken().compareTo(o2.compareToken());
 
-    public Project(MavenProject project, String location, File artifactPath) {
+    public Project(MavenProject project, String location, File artifactPath, boolean shadowed) {
         mavenProject = project;
         name = project.getName();
         groupId = project.getGroupId();
@@ -57,6 +58,7 @@
         url = project.getUrl();
         classifier = project.getArtifact().getClassifier();
         this.artifactPath = artifactPath.getPath();
+        this.shadowed = shadowed;
         setLocation(location);
     }
 
@@ -65,7 +67,8 @@
             @JsonProperty("artifactId") String artifactId, @JsonProperty("url") String url,
             @JsonProperty("version") String version, @JsonProperty("location") String location,
             @JsonProperty("artifactPath") String artifactPath, @JsonProperty("noticeText") String noticeText,
-            @JsonProperty("licenseText") String licenseText, @JsonProperty("classifier") String classifier) {
+            @JsonProperty("licenseText") String licenseText, @JsonProperty("classifier") String classifier,
+            @JsonProperty("shadowed") boolean shadowed) {
         this.name = name;
         this.groupId = groupId;
         this.artifactId = artifactId;
@@ -76,6 +79,7 @@
         this.noticeText = noticeText;
         this.licenseText = licenseText;
         this.classifier = classifier;
+        this.shadowed = shadowed;
     }
 
     public String getName() {
@@ -185,6 +189,10 @@
         this.sourcePointer = sourcePointer;
     }
 
+    public boolean isShadowed() {
+        return shadowed;
+    }
+
     @Override
     public String toString() {
         return "Project [" + gav() + "]";