diff --git a/doc/MIGRATION-v6.md b/doc/MIGRATION-v6.md
index 051d8f19eff..447a5ee0cd3 100644
--- a/doc/MIGRATION-v6.md
+++ b/doc/MIGRATION-v6.md
@@ -13,6 +13,8 @@
 - [Adapt Changes](#adapt-changes)
 - [Deprecations](#deprecations)
 - [Object sorting](#object-sorting)
+- [Boolean Changes](#boolean-changes)
+- [evict Changes](#evict-changes)
 
 ## Namespace Changes
 
@@ -164,4 +166,12 @@ Client.isAdaptable and Client.adapt will check first if the existing instance is
 
 ## Object Sorting
 
-KubernetesList and Template will no longer automatically sort their objects by default.  You may use the HasMetadataComparator to sort the items as needed.
\ No newline at end of file
+KubernetesList and Template will no longer automatically sort their objects by default.  You may use the HasMetadataComparator to sort the items as needed.
+
+## Boolean Changes
+
+The usage of Boolean in the api was removed where it was not a nullable value.  Please expect a boolean primitive from methods such as delete, copy, or as an argument in Loggable.getLog
+
+## Evict Changes
+
+Evictable.evict will throw an exception rather than returning false if the pod is not found.  This ensures that false strictly means that the evict failed.
\ No newline at end of file
diff --git a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/ContainerResource.java b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/ContainerResource.java
index 36c05e57ca4..ee0f9e4af23 100644
--- a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/ContainerResource.java
+++ b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/ContainerResource.java
@@ -16,8 +16,8 @@
 package io.fabric8.kubernetes.client.dsl;
 
 
-public interface ContainerResource<W, I, PI, O, PO, X, T, B, IS, UB>
+public interface ContainerResource<W, I, PI, O, PO, X, T, IS>
         extends TtyExecInputOutputErrorable<X, O, PO, I, PI, T>,
-                FileSelector<CopyOrReadable<B, IS, UB>>,
+                FileSelector<CopyOrReadable<IS>>,
   TimestampBytesLimitTerminateTimeTailPrettyLoggable<W> {
 }
diff --git a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Copiable.java b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Copiable.java
index 1988c466e3d..7a308bea324 100644
--- a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Copiable.java
+++ b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Copiable.java
@@ -17,7 +17,7 @@
 
 import java.nio.file.Path;
 
-public interface Copiable<T> {
-  
-  T copy(Path destination);
+public interface Copiable {
+
+  boolean copy(Path destination);
 }
diff --git a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/CopyOrReadable.java b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/CopyOrReadable.java
index 0312ccf7249..7ecca34387d 100644
--- a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/CopyOrReadable.java
+++ b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/CopyOrReadable.java
@@ -15,6 +15,6 @@
  */
 package io.fabric8.kubernetes.client.dsl;
 
-public interface CopyOrReadable<B, I, UB> extends Copiable<B>, Readable<I>, Uploadable<UB> {
+public interface CopyOrReadable<I> extends Copiable, Readable<I>, Uploadable {
 
 }
diff --git a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Deletable.java b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Deletable.java
index 733fa30b6b1..0d0b0166d2a 100644
--- a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Deletable.java
+++ b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Deletable.java
@@ -22,6 +22,6 @@ public interface Deletable {
    * @return value indicating object was deleted or not
    * @throws io.fabric8.kubernetes.client.KubernetesClientException if an error occurs.
    */
-  Boolean delete();
+  boolean delete();
 
 }
diff --git a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Evictable.java b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Evictable.java
index 859bc5a97ff..33ec54ee6a5 100644
--- a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Evictable.java
+++ b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Evictable.java
@@ -17,20 +17,20 @@
 
 import io.fabric8.kubernetes.api.model.policy.v1.Eviction;
 
-public interface Evictable<B> {
+public interface Evictable {
   /**
    * Evicts resource, respecting {@link io.fabric8.kubernetes.api.model.policy.v1beta1.PodDisruptionBudget}
    * @return value indicating object was evicted or not
-   * @throws io.fabric8.kubernetes.client.KubernetesClientException if an error occurs.
+   * @throws io.fabric8.kubernetes.client.KubernetesClientException if an error occurs, including if the Pod is not found.
    */
-  B evict();
+  boolean evict();
 
   /**
    * Evicts a pod from its node subject to certain policies and safety constraints.
    *
    * @param eviction Eviction object
    * @return value indicating object was evicted or not
-   * @throws io.fabric8.kubernetes.client.KubernetesClientException if an error occurs.
+   * @throws io.fabric8.kubernetes.client.KubernetesClientException if an error occurs, including if the Pod is not found.
    */
-  B evict(Eviction eviction);
+  boolean evict(Eviction eviction);
 }
diff --git a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Loggable.java b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Loggable.java
index af310bbb051..6d147f754b0 100644
--- a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Loggable.java
+++ b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Loggable.java
@@ -39,7 +39,7 @@ public interface Loggable<W> {
    * @param isPretty whether we need logs with pretty output or not
    * @return logs as string
    */
-  String getLog(Boolean isPretty);
+  String getLog(boolean isPretty);
 
   /**
    * Get a Reader for reading logs
diff --git a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/MultiDeleteable.java b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/MultiDeleteable.java
index 5c920eff2c3..34fd72ed86b 100644
--- a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/MultiDeleteable.java
+++ b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/MultiDeleteable.java
@@ -20,7 +20,7 @@
 
 public interface MultiDeleteable<T> {
 
-  Boolean delete(T... items);
+  boolean delete(T... items);
 
-  Boolean delete(List<T> items);
+  boolean delete(List<T> items);
 }
diff --git a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/PodResource.java b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/PodResource.java
index c11ca191ec5..42b01e374bd 100644
--- a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/PodResource.java
+++ b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/PodResource.java
@@ -15,6 +15,9 @@
  */
 package io.fabric8.kubernetes.client.dsl;
 
+import io.fabric8.kubernetes.client.LocalPortForward;
+import io.fabric8.kubernetes.client.PortForward;
+
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.io.PipedInputStream;
@@ -22,13 +25,10 @@
 import java.nio.channels.ReadableByteChannel;
 import java.nio.channels.WritableByteChannel;
 
-import io.fabric8.kubernetes.client.LocalPortForward;
-import io.fabric8.kubernetes.client.PortForward;
-
 public interface PodResource<T> extends Resource<T>,
         Loggable<LogWatch>,
-        Containerable<String, ContainerResource<LogWatch, InputStream, PipedOutputStream, OutputStream, PipedInputStream, String, ExecWatch, Boolean, InputStream, Boolean>>,
-        ContainerResource<LogWatch, InputStream, PipedOutputStream, OutputStream, PipedInputStream, String, ExecWatch, Boolean, InputStream, Boolean>,
+        Containerable<String, ContainerResource<LogWatch, InputStream, PipedOutputStream, OutputStream, PipedInputStream, String, ExecWatch, InputStream>>,
+        ContainerResource<LogWatch, InputStream, PipedOutputStream, OutputStream, PipedInputStream, String, ExecWatch, InputStream>,
         PortForwardable<PortForward, LocalPortForward, ReadableByteChannel, WritableByteChannel>,
-        Evictable<Boolean>{
+        Evictable{
 }
diff --git a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Uploadable.java b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Uploadable.java
index eecda26edbc..1c57a8dc3c1 100644
--- a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Uploadable.java
+++ b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/dsl/Uploadable.java
@@ -18,7 +18,7 @@
 import java.io.InputStream;
 import java.nio.file.Path;
 
-public interface Uploadable<T> {
+public interface Uploadable {
 
   /**
    * Upload file located at specified {@link Path} to Pod
@@ -26,7 +26,7 @@ public interface Uploadable<T> {
    * @param path path of the file which needs to be uploaded
    * @return boolean value regarding upload was successful or not.
    */
-  T upload(Path path);
+  boolean upload(Path path);
 
   /**
    * Upload file extracted from provided InputStream to Pod
@@ -34,5 +34,5 @@ public interface Uploadable<T> {
    * @param inputStream {@link InputStream} which will be uploaded
    * @return boolean value regarding upload was successful or not.
    */
-  T upload(InputStream inputStream);
+  boolean upload(InputStream inputStream);
 }
diff --git a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/extension/ResourceAdapter.java b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/extension/ResourceAdapter.java
index 6abc22e2439..9dfb8d03e85 100644
--- a/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/extension/ResourceAdapter.java
+++ b/kubernetes-client-api/src/main/java/io/fabric8/kubernetes/client/extension/ResourceAdapter.java
@@ -62,7 +62,7 @@ public ResourceAdapter(Resource<T> resource) {
   }
 
   @Override
-  public Boolean delete() {
+  public boolean delete() {
     return resource.delete();
   }
 
diff --git a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/BaseOperation.java b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/BaseOperation.java
index bb63f58953d..506bd206907 100755
--- a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/BaseOperation.java
+++ b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/BaseOperation.java
@@ -439,7 +439,7 @@ private ListOptions defaultListOptions(ListOptions options, Boolean watch) {
   }
 
   @Override
-  public Boolean delete() {
+  public boolean delete() {
     if (item != null || (name != null && !name.isEmpty())) {
       try {
         deleteThis();
@@ -465,12 +465,12 @@ public Boolean delete() {
 
   @SafeVarargs
   @Override
-  public final Boolean delete(T... items) {
+  public final boolean delete(T... items) {
     return delete(Arrays.asList(items));
   }
 
   @Override
-  public Boolean delete(List<T> items) {
+  public boolean delete(List<T> items) {
     boolean deleted = true;
     if (items != null) {
       for (T toDelete : items) {
diff --git a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/NamespaceVisitFromServerGetWatchDeleteRecreateWaitApplicableListImpl.java b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/NamespaceVisitFromServerGetWatchDeleteRecreateWaitApplicableListImpl.java
index dcea524781a..9b817c77079 100644
--- a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/NamespaceVisitFromServerGetWatchDeleteRecreateWaitApplicableListImpl.java
+++ b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/NamespaceVisitFromServerGetWatchDeleteRecreateWaitApplicableListImpl.java
@@ -228,9 +228,9 @@ public Waitable<List<HasMetadata>, HasMetadata> createOrReplaceAnd() {
   }
 
   @Override
-  public Boolean delete() {
+  public boolean delete() {
     for (Resource<HasMetadata> impl :  getResources()) {
-      if (Boolean.FALSE.equals(impl.delete())) {
+      if (!impl.delete()) {
         return false;
       }
     }
diff --git a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/apps/v1/DeploymentOperationsImpl.java b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/apps/v1/DeploymentOperationsImpl.java
index fcde82a2479..4ba958fd105 100644
--- a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/apps/v1/DeploymentOperationsImpl.java
+++ b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/apps/v1/DeploymentOperationsImpl.java
@@ -267,7 +267,7 @@ private void waitUntilDeploymentIsScaled(final int count) {
   }
 
   @Override
-  public String getLog(Boolean isPretty) {
+  public String getLog(boolean isPretty) {
     StringBuilder stringBuilder = new StringBuilder();
     List<RollableScalableResource<ReplicaSet>> rcList = doGetLog();
     for (RollableScalableResource<ReplicaSet> rcOperation : rcList) {
diff --git a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/apps/v1/ReplicaSetOperationsImpl.java b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/apps/v1/ReplicaSetOperationsImpl.java
index bf8b0e6ad0f..6ba886f50e0 100644
--- a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/apps/v1/ReplicaSetOperationsImpl.java
+++ b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/apps/v1/ReplicaSetOperationsImpl.java
@@ -153,7 +153,7 @@ public Status rollback(DeploymentRollback deploymentRollback) {
   }
 
   @Override
-  public String getLog(Boolean isPretty) {
+  public String getLog(boolean isPretty) {
     return PodOperationUtil.getLog(doGetLog(isPretty), isPretty);
   }
 
diff --git a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/apps/v1/StatefulSetOperationsImpl.java b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/apps/v1/StatefulSetOperationsImpl.java
index 21a6afea895..a772eff708b 100644
--- a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/apps/v1/StatefulSetOperationsImpl.java
+++ b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/apps/v1/StatefulSetOperationsImpl.java
@@ -138,7 +138,7 @@ public Status rollback(DeploymentRollback deploymentRollback) {
   }
 
   @Override
-  public String getLog(Boolean isPretty) {
+  public String getLog(boolean isPretty) {
     return PodOperationUtil.getLog(doGetLog(isPretty), isPretty);
   }
 
diff --git a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/batch/v1/JobOperationsImpl.java b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/batch/v1/JobOperationsImpl.java
index 87c221dc040..db41262a2bd 100644
--- a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/batch/v1/JobOperationsImpl.java
+++ b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/batch/v1/JobOperationsImpl.java
@@ -116,7 +116,7 @@ public String getLog() {
   }
 
   @Override
-  public String getLog(Boolean isPretty) {
+  public String getLog(boolean isPretty) {
     StringBuilder stringBuilder = new StringBuilder();
     List<PodResource<Pod>> podOperationList = doGetLog(false);
     for (PodResource<Pod> podOperation : podOperationList) {
diff --git a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/core/v1/PodOperationsImpl.java b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/core/v1/PodOperationsImpl.java
index 18898ab7b85..f2a8ec7d0ff 100644
--- a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/core/v1/PodOperationsImpl.java
+++ b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/core/v1/PodOperationsImpl.java
@@ -25,7 +25,6 @@
 import java.io.PipedInputStream;
 import java.io.PipedOutputStream;
 import java.io.Reader;
-import java.net.HttpURLConnection;
 import java.net.InetAddress;
 import java.net.MalformedURLException;
 import java.net.URL;
@@ -86,7 +85,7 @@
 import io.fabric8.kubernetes.client.utils.internal.PodOperationUtil;
 import io.fabric8.kubernetes.client.lib.FilenameUtils;
 
-public class PodOperationsImpl extends HasMetadataOperation<Pod, PodList, PodResource<Pod>> implements PodResource<Pod>,CopyOrReadable<Boolean,InputStream, Boolean> {
+public class PodOperationsImpl extends HasMetadataOperation<Pod, PodList, PodResource<Pod>> implements PodResource<Pod>,CopyOrReadable<InputStream> {
 
     public static final int HTTP_TOO_MANY_REQUESTS = 429;
     private static final Integer DEFAULT_POD_LOG_WAIT_TIMEOUT = 5;
@@ -201,7 +200,7 @@ public Reader getLogReader() {
   }
 
   @Override
-  public String getLog(Boolean isPretty) {
+  public String getLog(boolean isPretty) {
     return new PodOperationsImpl(getContext().withPrettyOutput(isPretty), context).getLog();
   }
 
@@ -266,7 +265,7 @@ public LocalPortForward portForward(int port, InetAddress localInetAddress,  int
   }
 
   @Override
-  public Boolean evict() {
+  public boolean evict() {
     Eviction eviction = new EvictionBuilder()
       .withNewMetadata()
       .withName(getName())
@@ -278,11 +277,11 @@ public Boolean evict() {
   }
 
   @Override
-  public Boolean evict(io.fabric8.kubernetes.api.model.policy.v1.Eviction eviction) {
+  public boolean evict(io.fabric8.kubernetes.api.model.policy.v1.Eviction eviction) {
     return handleEvict(eviction);
   }
 
-  private Boolean handleEvict(HasMetadata eviction) {
+  private boolean handleEvict(HasMetadata eviction) {
     try {
       if (Utils.isNullOrEmpty(eviction.getMetadata().getNamespace())) {
         throw new KubernetesClientException("Namespace not specified, but operation requires it.");
@@ -296,7 +295,7 @@ private Boolean handleEvict(HasMetadata eviction) {
       handleResponse(requestBuilder, null, Collections.emptyMap());
       return true;
     } catch (KubernetesClientException e) {
-      if (e.getCode() != HttpURLConnection.HTTP_NOT_FOUND && e.getCode() != HTTP_TOO_MANY_REQUESTS) {
+      if (e.getCode() != HTTP_TOO_MANY_REQUESTS) {
         throw e;
       }
       return false;
@@ -309,7 +308,7 @@ private Boolean handleEvict(HasMetadata eviction) {
   }
 
   @Override
-    public ContainerResource<LogWatch, InputStream, PipedOutputStream, OutputStream, PipedInputStream, String, ExecWatch, Boolean, InputStream, Boolean> inContainer(String containerId) {
+    public ContainerResource<LogWatch, InputStream, PipedOutputStream, OutputStream, PipedInputStream, String, ExecWatch, InputStream> inContainer(String containerId) {
         return new PodOperationsImpl(getContext().withContainerId(containerId), context);
     }
 
@@ -364,17 +363,17 @@ URL getURLWithCommandParams(String[] commands) throws MalformedURLException {
     }
 
     @Override
-    public CopyOrReadable<Boolean, InputStream, Boolean> file(String file) {
+    public CopyOrReadable<InputStream> file(String file) {
       return new PodOperationsImpl(getContext().withFile(file), context);
     }
 
     @Override
-    public CopyOrReadable<Boolean, InputStream, Boolean> dir(String dir) {
+    public CopyOrReadable<InputStream> dir(String dir) {
       return new PodOperationsImpl(getContext().withDir(dir), context);
     }
 
    @Override
-   public Boolean copy(Path destination) {
+   public boolean copy(Path destination) {
     try {
       if (Utils.isNotNullOrEmpty(getContext().getFile())) {
         copyFile(getContext().getFile(), destination.toFile());
@@ -390,7 +389,7 @@ public Boolean copy(Path destination) {
    }
 
   @Override
-  public Boolean upload(InputStream inputStream) {
+  public boolean upload(InputStream inputStream) {
     return wrapRunWithOptionalDependency(() -> {
       try {
         return PodUpload.uploadFileData(httpClient, getContext(), this, inputStream);
@@ -402,7 +401,7 @@ public Boolean upload(InputStream inputStream) {
   }
 
   @Override
-  public Boolean upload(Path path) {
+  public boolean upload(Path path) {
     return wrapRunWithOptionalDependency(() -> {
       try {
         return PodUpload.upload(httpClient, getContext(), this, path);
diff --git a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/core/v1/ReplicationControllerOperationsImpl.java b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/core/v1/ReplicationControllerOperationsImpl.java
index 0ab8462ce20..d87fca83bac 100644
--- a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/core/v1/ReplicationControllerOperationsImpl.java
+++ b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/core/v1/ReplicationControllerOperationsImpl.java
@@ -133,7 +133,7 @@ public Status rollback(DeploymentRollback deploymentRollback) {
   }
 
   @Override
-  public String getLog(Boolean isPretty) {
+  public String getLog(boolean isPretty) {
     return PodOperationUtil.getLog(doGetLog(isPretty), isPretty);
   }
 
diff --git a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/extensions/v1beta1/DeploymentOperationsImpl.java b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/extensions/v1beta1/DeploymentOperationsImpl.java
index 90d1f40b3ae..939ea58a9e5 100644
--- a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/extensions/v1beta1/DeploymentOperationsImpl.java
+++ b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/extensions/v1beta1/DeploymentOperationsImpl.java
@@ -264,7 +264,7 @@ private void waitUntilDeploymentIsScaled(final int count) {
   }
 
   @Override
-  public String getLog(Boolean isPretty) {
+  public String getLog(boolean isPretty) {
     StringBuilder stringBuilder = new StringBuilder();
     List<RollableScalableResource<ReplicaSet>> rcList = doGetLog();
     for (RollableScalableResource<ReplicaSet> rcOperation : rcList) {
diff --git a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/extensions/v1beta1/ReplicaSetOperationsImpl.java b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/extensions/v1beta1/ReplicaSetOperationsImpl.java
index f200268c690..a15a25f3890 100644
--- a/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/extensions/v1beta1/ReplicaSetOperationsImpl.java
+++ b/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/extensions/v1beta1/ReplicaSetOperationsImpl.java
@@ -155,7 +155,7 @@ public Status rollback(DeploymentRollback deploymentRollback) {
   }
 
   @Override
-  public String getLog(Boolean isPretty) {
+  public String getLog(boolean isPretty) {
     StringBuilder stringBuilder = new StringBuilder();
     List<PodResource<Pod>> podOperationList = doGetLog(isPretty);
     for (PodResource<Pod> podOperation : podOperationList) {
diff --git a/kubernetes-tests/src/test/java/io/fabric8/kubernetes/client/mock/PodTest.java b/kubernetes-tests/src/test/java/io/fabric8/kubernetes/client/mock/PodTest.java
index 88854c1ef54..2ce6d6fb459 100644
--- a/kubernetes-tests/src/test/java/io/fabric8/kubernetes/client/mock/PodTest.java
+++ b/kubernetes-tests/src/test/java/io/fabric8/kubernetes/client/mock/PodTest.java
@@ -234,8 +234,8 @@ void testEvict() {
     assertTrue(deleted);
 
     // not found
-    deleted = client.pods().withName("pod2").evict();
-    assertFalse(deleted);
+    PodResource<Pod> podResource = client.pods().withName("pod2");
+    assertThrows(KubernetesClientException.class, () -> podResource.evict());
 
     deleted = client.pods().inNamespace("ns1").withName("pod2").evict();
     assertTrue(deleted);
diff --git a/openshift-client/src/main/java/io/fabric8/openshift/client/DefaultOpenShiftClient.java b/openshift-client/src/main/java/io/fabric8/openshift/client/DefaultOpenShiftClient.java
index 9096836274b..026432b1f72 100644
--- a/openshift-client/src/main/java/io/fabric8/openshift/client/DefaultOpenShiftClient.java
+++ b/openshift-client/src/main/java/io/fabric8/openshift/client/DefaultOpenShiftClient.java
@@ -360,7 +360,7 @@ public NameableCreateOrDeleteable imageSignatures() {
     return new NameableCreateOrDeleteable() {
 
       @Override
-      public Boolean delete() {
+      public boolean delete() {
         return operation.delete();
       }
 
diff --git a/openshift-client/src/main/java/io/fabric8/openshift/client/dsl/internal/apps/DeploymentConfigOperationsImpl.java b/openshift-client/src/main/java/io/fabric8/openshift/client/dsl/internal/apps/DeploymentConfigOperationsImpl.java
index ebed65146a7..2aa9d13cd3f 100644
--- a/openshift-client/src/main/java/io/fabric8/openshift/client/dsl/internal/apps/DeploymentConfigOperationsImpl.java
+++ b/openshift-client/src/main/java/io/fabric8/openshift/client/dsl/internal/apps/DeploymentConfigOperationsImpl.java
@@ -199,7 +199,7 @@ public String getLog() {
   }
 
   @Override
-  public String getLog(Boolean isPretty) {
+  public String getLog(boolean isPretty) {
     return doGetLog(isPretty, String.class);
   }
 
diff --git a/openshift-client/src/main/java/io/fabric8/openshift/client/dsl/internal/build/BuildOperationsImpl.java b/openshift-client/src/main/java/io/fabric8/openshift/client/dsl/internal/build/BuildOperationsImpl.java
index b5f1fb079b7..0b456064916 100644
--- a/openshift-client/src/main/java/io/fabric8/openshift/client/dsl/internal/build/BuildOperationsImpl.java
+++ b/openshift-client/src/main/java/io/fabric8/openshift/client/dsl/internal/build/BuildOperationsImpl.java
@@ -136,7 +136,7 @@ public String getLog() {
   }
 
   @Override
-  public String getLog(Boolean isPretty) {
+  public String getLog(boolean isPretty) {
     return new BuildOperationsImpl(getContext().withPrettyOutput(isPretty), context).getLog();
   }