apache · jongyoul · Apr 4, 2026 · Apr 4, 2026 · Apr 4, 2026 · Apr 4, 2026
diff --git a/.github/workflows/core.yml b/.github/workflows/core.yml
@@ -33,7 +33,7 @@ permissions:
   contents: read # to fetch code (actions/checkout)
 
 jobs:
-  # test on core-modules (zeppelin-interpreter,zeppelin-zengine,zeppelin-server),
+  # test on core-modules (zeppelin-interpreter,zeppelin-server),
   # some interpreters are included, because zeppelin-server test depends on them: spark, shell & markdown
   core-modules:
     runs-on: ubuntu-24.04

diff --git a/bin/install-interpreter.sh b/bin/install-interpreter.sh
@@ -29,8 +29,8 @@ ZEPPELIN_INSTALL_INTERPRETER_MAIN=org.apache.zeppelin.interpreter.install.Instal
 ZEPPELIN_LOGFILE="${ZEPPELIN_LOG_DIR}/install-interpreter.log"
 JAVA_OPTS+=" -Dzeppelin.log.file=${ZEPPELIN_LOGFILE}"
 
-if [[ -d "${ZEPPELIN_HOME}/zeppelin-zengine/target/classes" ]]; then
-  ZEPPELIN_CLASSPATH+=":${ZEPPELIN_HOME}/zeppelin-zengine/target/classes"
+if [[ -d "${ZEPPELIN_HOME}/zeppelin-server/target/classes" ]]; then
+  ZEPPELIN_CLASSPATH+=":${ZEPPELIN_HOME}/zeppelin-server/target/classes"
 fi
 addJarInDir "${ZEPPELIN_HOME}/zeppelin-server/target/lib"
 

diff --git a/bin/interpreter.cmd b/bin/interpreter.cmd
@@ -46,8 +46,8 @@ REM add test classes for unittest
 if exist "%ZEPPELIN_HOME%\zeppelin-interpreter\target\test-classes" (
     set ZEPPELIN_CLASSPATH=%ZEPPELIN_CLASSPATH%;"%ZEPPELIN_HOME%\zeppelin-interpreter\target\test-classes"
 )
-if exist "%ZEPPELIN_HOME%\zeppelin-zengine\target\test-classes" (
-    set ZEPPELIN_CLASSPATH=%ZEPPELIN_CLASSPATH%;"%ZEPPELIN_HOME%\zeppelin-zengine\target\test-classes"
+if exist "%ZEPPELIN_HOME%\zeppelin-server\target\test-classes" (
+    set ZEPPELIN_CLASSPATH=%ZEPPELIN_CLASSPATH%;"%ZEPPELIN_HOME%\zeppelin-server\target\test-classes"
 )
 
 call "%bin%\functions.cmd" ADDJARINDIR "%ZEPPELIN_HOME%\zeppelin-interpreter\target\lib"

diff --git a/bin/interpreter.sh b/bin/interpreter.sh
@@ -112,9 +112,9 @@ if [[ -d "${ZEPPELIN_HOME}/zeppelin-interpreter/target/classes" ]]; then
 fi
 
 # add test classes for unittest
-if [[ -d "${ZEPPELIN_HOME}/zeppelin-zengine/target/test-classes" ]]; then
-  ZEPPELIN_INTP_CLASSPATH+=":${ZEPPELIN_HOME}/zeppelin-zengine/target/test-classes"
-  addJarInDirForIntp "${ZEPPELIN_HOME}/zeppelin-zengine/target/test-classes"
+if [[ -d "${ZEPPELIN_HOME}/zeppelin-server/target/test-classes" ]]; then
+  ZEPPELIN_INTP_CLASSPATH+=":${ZEPPELIN_HOME}/zeppelin-server/target/test-classes"
+  addJarInDirForIntp "${ZEPPELIN_HOME}/zeppelin-server/target/test-classes"
 fi
 
 addJarInDirForIntp "${ZEPPELIN_HOME}/zeppelin-interpreter-shaded/target"

diff --git a/bin/stop-interpreter.sh b/bin/stop-interpreter.sh
@@ -30,8 +30,8 @@ ZEPPELIN_STOP_INTERPRETER_MAIN=org.apache.zeppelin.interpreter.recovery.StopInte
 ZEPPELIN_LOGFILE="${ZEPPELIN_LOG_DIR}/stop-interpreter.log"
 JAVA_OPTS+=" -Dzeppelin.log.file=${ZEPPELIN_LOGFILE}"
 
-if [[ -d "${ZEPPELIN_HOME}/zeppelin-zengine/target/classes" ]]; then
-  ZEPPELIN_CLASSPATH+=":${ZEPPELIN_HOME}/zeppelin-zengine/target/classes"
+if [[ -d "${ZEPPELIN_HOME}/zeppelin-server/target/classes" ]]; then
+  ZEPPELIN_CLASSPATH+=":${ZEPPELIN_HOME}/zeppelin-server/target/classes"
 fi
 
 if [[ -d "${ZEPPELIN_HOME}/zeppelin-interpreter/target/classes" ]]; then

diff --git a/bin/zeppelin-daemon.sh b/bin/zeppelin-daemon.sh
@@ -61,10 +61,6 @@ if [[ -d "${ZEPPELIN_HOME}/zeppelin-interpreter/target/classes" ]]; then
   ZEPPELIN_CLASSPATH+=":${ZEPPELIN_HOME}/zeppelin-interpreter/target/classes"
 fi
 
-if [[ -d "${ZEPPELIN_HOME}/zeppelin-zengine/target/classes" ]]; then
-  ZEPPELIN_CLASSPATH+=":${ZEPPELIN_HOME}/zeppelin-zengine/target/classes"
-fi
-
 if [[ -d "${ZEPPELIN_HOME}/zeppelin-server/target/classes" ]]; then
   ZEPPELIN_CLASSPATH+=":${ZEPPELIN_HOME}/zeppelin-server/target/classes"
 fi
@@ -80,7 +76,6 @@ addJarInDir "${ZEPPELIN_HOME}"
 addJarInDir "${ZEPPELIN_HOME}/lib"
 addJarInDir "${ZEPPELIN_HOME}/lib/interpreter"
 addJarInDir "${ZEPPELIN_HOME}/zeppelin-interpreter/target/lib"
-addJarInDir "${ZEPPELIN_HOME}/zeppelin-zengine/target/lib"
 addJarInDir "${ZEPPELIN_HOME}/zeppelin-server/target/lib"
 addJarInDir "${ZEPPELIN_HOME}/zeppelin-web/target/lib"
 addJarInDir "${ZEPPELIN_HOME}/zeppelin-web-angular/target/lib"

diff --git a/bin/zeppelin.cmd b/bin/zeppelin.cmd
@@ -46,10 +46,6 @@ if exist "%ZEPPELIN_HOME%\zeppelin-interpreter\target\classes" (
     set ZEPPELIN_CLASSPATH=%ZEPPELIN_CLASSPATH%;"%ZEPPELIN_HOME%\zeppelin-interpreter\target\classes"
 )
 
-if exist "%ZEPPELIN_HOME%\zeppelin-zengine\target\classes" (
-    set ZEPPELIN_CLASSPATH=%ZEPPELIN_CLASSPATH%;"%ZEPPELIN_HOME%\zeppelin-zengine\target\classes"
-)
-
 if exist "%ZEPPELIN_HOME%\zeppelin-server\target\classes" (
     set ZEPPELIN_CLASSPATH=%ZEPPELIN_CLASSPATH%;"%ZEPPELIN_HOME%\zeppelin-server\target\classes"
 )
@@ -58,7 +54,6 @@ call "%bin%\functions.cmd" ADDJARINDIR "%ZEPPELIN_HOME%"
 call "%bin%\functions.cmd" ADDJARINDIR "%ZEPPELIN_HOME%\lib"
 call "%bin%\functions.cmd" ADDJARINDIR "%ZEPPELIN_HOME%\lib\interpreter"
 call "%bin%\functions.cmd" ADDJARINDIR "%ZEPPELIN_HOME%\zeppelin-interpreter\target\lib"
-call "%bin%\functions.cmd" ADDJARINDIR "%ZEPPELIN_HOME%\zeppelin-zengine\target\lib"
 call "%bin%\functions.cmd" ADDJARINDIR "%ZEPPELIN_HOME%\zeppelin-server\target\lib"
 call "%bin%\functions.cmd" ADDJARINDIR "%ZEPPELIN_HOME%\zeppelin-web\target\lib"
 

diff --git a/bin/zeppelin.sh b/bin/zeppelin.sh
@@ -96,10 +96,6 @@ if [[ -d "${ZEPPELIN_HOME}/zeppelin-interpreter/target/classes" ]]; then
   ZEPPELIN_CLASSPATH+=":${ZEPPELIN_HOME}/zeppelin-interpreter/target/classes"
 fi
 
-if [[ -d "${ZEPPELIN_HOME}/zeppelin-zengine/target/classes" ]]; then
-  ZEPPELIN_CLASSPATH+=":${ZEPPELIN_HOME}/zeppelin-zengine/target/classes"
-fi
-
 if [[ -d "${ZEPPELIN_HOME}/zeppelin-server/target/classes" ]]; then
   ZEPPELIN_CLASSPATH+=":${ZEPPELIN_HOME}/zeppelin-server/target/classes"
 fi
@@ -108,7 +104,6 @@ addJarInDir "${ZEPPELIN_HOME}"
 addJarInDir "${ZEPPELIN_HOME}/lib"
 addJarInDir "${ZEPPELIN_HOME}/lib/interpreter"
 addJarInDir "${ZEPPELIN_HOME}/zeppelin-interpreter/target/lib"
-addJarInDir "${ZEPPELIN_HOME}/zeppelin-zengine/target/lib"
 addJarInDir "${ZEPPELIN_HOME}/zeppelin-server/target/lib"
 addJarInDir "${ZEPPELIN_HOME}/zeppelin-web/target/lib"
 addJarInDir "${ZEPPELIN_HOME}/zeppelin-web-angular/target/lib"

diff --git a/docs/development/contribution/how_to_contribute_code.md b/docs/development/contribution/how_to_contribute_code.md
@@ -140,14 +140,14 @@ Zeppelin has [set of integration tests](https://github.com/apache/zeppelin/tree/
 
 ```bash
 TEST_SELENIUM=true ./mvnw test -Dtest=[TEST_NAME] -DfailIfNoTests=false \
--pl 'zeppelin-interpreter,zeppelin-zengine,zeppelin-server'
+-pl 'zeppelin-interpreter,zeppelin-server'
 ```
 
 For example, to run [ParagraphActionIT](https://github.com/apache/zeppelin/blob/master/zeppelin-integration/src/test/java/org/apache/zeppelin/integration/ParagraphActionsIT.java),
 
 ```bash
 TEST_SELENIUM=true ./mvnw test -Dtest=ParagraphActionsIT -DfailIfNoTests=false \
--pl 'zeppelin-interpreter,zeppelin-zengine,zeppelin-server'
+-pl 'zeppelin-interpreter,zeppelin-server'
 ```
 
 You'll need Firefox web browser installed in your development environment.

diff --git a/docs/development/helium/writing_visualization_basic.md b/docs/development/helium/writing_visualization_basic.md
@@ -46,7 +46,7 @@ Click 'enable' button.
 
 #### 3. Create and load visualization bundle on the fly
 
-Once a Visualization package is enabled, [HeliumBundleFactory](https://github.com/apache/zeppelin/blob/master/zeppelin-zengine/src/main/java/org/apache/zeppelin/helium/HeliumBundleFactory.java) creates a js bundle. The js bundle is served by `helium/bundle/load` rest api endpoint.
+Once a Visualization package is enabled, [HeliumBundleFactory](https://github.com/apache/zeppelin/blob/master/zeppelin-server/src/main/java/org/apache/zeppelin/helium/HeliumBundleFactory.java) creates a js bundle. The js bundle is served by `helium/bundle/load` rest api endpoint.
 
 #### 4. Run visualization
 

diff --git a/docs/development/writing_zeppelin_interpreter.md b/docs/development/writing_zeppelin_interpreter.md
@@ -31,7 +31,7 @@ Interpreters in the same InterpreterGroup can reference each other. For example,
 
 <img class="img-responsive" style="width:50%; border: 1px solid #ecf0f1;" height="auto" src="{{BASE_PATH}}/assets/themes/zeppelin/img/interpreter.png" />
 
-[InterpreterSetting](https://github.com/apache/zeppelin/blob/master/zeppelin-zengine/src/main/java/org/apache/zeppelin/interpreter/InterpreterSetting.java) is configuration of a given [InterpreterGroup](https://github.com/apache/zeppelin/blob/master/zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/InterpreterGroup.java) and a unit of start/stop interpreter.
+[InterpreterSetting](https://github.com/apache/zeppelin/blob/master/zeppelin-server/src/main/java/org/apache/zeppelin/interpreter/InterpreterSetting.java) is configuration of a given [InterpreterGroup](https://github.com/apache/zeppelin/blob/master/zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/InterpreterGroup.java) and a unit of start/stop interpreter.
 All Interpreters in the same InterpreterSetting are launched in a single, separate JVM process. The Interpreter communicates with Zeppelin engine via **[Thrift](https://github.com/apache/zeppelin/blob/master/zeppelin-interpreter/src/main/thrift/RemoteInterpreterService.thrift)**.
 
 In 'Separate Interpreter(scoped / isolated) for each note' mode which you can see at the **Interpreter Setting** menu when you create a new interpreter, new interpreter instance will be created per note. But it still runs on the same JVM while they're in the same InterpreterSettings.

diff --git a/pom.xml b/pom.xml
@@ -56,7 +56,6 @@
     <module>zeppelin-interpreter-parent</module>
     <module>zeppelin-interpreter</module>
     <module>zeppelin-interpreter-shaded</module>
-    <module>zeppelin-zengine</module>
     <module>rlang</module>
     <module>zeppelin-jupyter-interpreter</module>
     <module>zeppelin-jupyter-interpreter-shaded</module>

diff --git a/zeppelin-common/src/main/java/org/apache/zeppelin/common/Message.java b/zeppelin-common/src/main/java/org/apache/zeppelin/common/Message.java
@@ -28,7 +28,7 @@
 import java.util.Set;
 
 /**
- * Copied from zeppelin-zengine (TODO, zjffdu). Should resume the same piece of code instead of copying.
+ * Copied from zeppelin-server (TODO, zjffdu). Should resume the same piece of code instead of copying.
  * Zeppelin websocket message template class.
  */
 public class Message implements JsonSerializable {

diff --git a/zeppelin-integration/pom.xml b/zeppelin-integration/pom.xml
@@ -69,13 +69,6 @@
       </exclusions>
     </dependency>
 
-    <dependency>
-      <groupId>${project.groupId}</groupId>
-      <artifactId>zeppelin-zengine</artifactId>
-      <version>${project.version}</version>
-      <scope>test</scope>
-    </dependency>
-
     <dependency>
       <groupId>org.apache.zeppelin</groupId>
       <artifactId>spark-interpreter</artifactId>
@@ -132,13 +125,6 @@
       <scope>test</scope>
       <classifier>tests</classifier>
     </dependency>
-    <dependency>
-      <groupId>org.apache.zeppelin</groupId>
-      <artifactId>zeppelin-zengine</artifactId>
-      <version>${project.version}</version>
-      <scope>test</scope>
-      <classifier>tests</classifier>
-    </dependency>
     <dependency>
       <groupId>org.apache.zeppelin</groupId>
       <artifactId>zeppelin-test</artifactId>

diff --git a/zeppelin-interpreter-integration/pom.xml b/zeppelin-interpreter-integration/pom.xml
@@ -53,18 +53,6 @@
       </exclusions>
     </dependency>
 
-    <dependency>
-      <groupId>org.apache.zeppelin</groupId>
-      <artifactId>zeppelin-zengine</artifactId>
-      <version>${project.version}</version>
-      <exclusions>
-        <exclusion>
-          <groupId>org.ow2.asm</groupId>
-          <artifactId>asm</artifactId>
-        </exclusion>
-      </exclusions>
-    </dependency>
-
     <dependency>
       <groupId>org.apache.zeppelin</groupId>
       <artifactId>zeppelin-server</artifactId>
@@ -83,14 +71,6 @@
       </exclusions>
     </dependency>
 
-    <dependency>
-      <groupId>org.apache.zeppelin</groupId>
-      <artifactId>zeppelin-zengine</artifactId>
-      <version>${project.version}</version>
-      <classifier>tests</classifier>
-      <scope>test</scope>
-    </dependency>
-
     <dependency>
       <groupId>org.apache.zeppelin</groupId>
       <artifactId>zeppelin-server</artifactId>

diff --git a/zeppelin-interpreter/src/main/java/org/apache/zeppelin/dep/DependencyResolver.java b/zeppelin-interpreter/src/main/java/org/apache/zeppelin/dep/DependencyResolver.java
@@ -51,8 +51,7 @@
 public class DependencyResolver extends AbstractDependencyResolver {
   private static final Logger LOGGER = LoggerFactory.getLogger(DependencyResolver.class);
 
-  private final String[] exclusions = new String[] {"org.apache.zeppelin:zeppelin-zengine",
-                                                    "org.apache.zeppelin:zeppelin-interpreter",
+  private final String[] exclusions = new String[] {"org.apache.zeppelin:zeppelin-interpreter",
                                                     "org.apache.zeppelin:zeppelin-server"};
 
   public DependencyResolver(String localRepoPath,

diff --git a/...nterpreter/src/main/java/org/apache/zeppelin/interpreter/InterpreterFactoryInterface.java b/...nterpreter/src/main/java/org/apache/zeppelin/interpreter/InterpreterFactoryInterface.java
@@ -20,7 +20,7 @@
  * InterpreterFactory Interface
  * Provides the interface to the ClusterManagerServer
  * through the user, nodeId, replName query interpreter
- * Since the InterpreterFactory is in the zeppelin-zengine module,
+ * Since the InterpreterFactory is in the zeppelin-server module,
  * the ClusterManagerServer in the zeppelin-interpreter module
  * cannot access InterpreterFactory#getInterpreter(...),
  * So access through the interface.

diff --git a/zeppelin-plugins/pom.xml b/zeppelin-plugins/pom.xml
@@ -32,7 +32,7 @@
     <name>Zeppelin: Plugins Parent</name>
     <description>Zeppelin Plugins Parent</description>
     <properties>
-        <!-- no need to include hadoop jar, because it's already included in zeppelin-zengine -->
+        <!-- no need to include hadoop jar, because it's already included in zeppelin-server -->
         <hadoop.deps.scope>provided</hadoop.deps.scope>
     </properties>
 
@@ -54,11 +54,11 @@
     <dependencies>
         <dependency>
             <groupId>${project.groupId}</groupId>
-            <artifactId>zeppelin-zengine</artifactId>
+            <artifactId>zeppelin-server</artifactId>
             <version>${project.version}</version>
             <scope>provided</scope>
             <exclusions>
-                <!-- jcl-over-slf4j is provided by zeppelin-interprerter -->
+                <!-- jcl-over-slf4j is provided by zeppelin-interpreter -->
                 <exclusion>
                     <groupId>commons-logging</groupId>
                     <artifactId>commons-logging</artifactId>