Solve #1657, Remove regexp package dependency

conf/zeppelin-site.xml

@@ -144,14 +144,6 @@
 </property>
 -->
 
-<!-- Notebook storage layer using local file system
-<property>
-  <name>zeppelin.notebook.storage</name>
-  <value>org.apache.zeppelin.notebook.repo.VFSNotebookRepo</value>
-  <description>local notebook persistence layer implementation</description>
-</property>
--->
-
 <!-- For connecting your Zeppelin with ZeppelinHub -->
 <!--
 <property>

smart-integration/conf/zeppelin-site.xml

@@ -144,14 +144,6 @@
 </property>
 -->
 
-<!-- Notebook storage layer using local file system
-<property>
-  <name>zeppelin.notebook.storage</name>
-  <value>org.apache.zeppelin.notebook.repo.VFSNotebookRepo</value>
-  <description>local notebook persistence layer implementation</description>
-</property>
--->
-
 <!-- For connecting your Zeppelin with ZeppelinHub -->
 <!--
 <property>

smart-integration/src/test/resources/zeppelin-site.xml

@@ -144,14 +144,6 @@
 </property>
 -->
 
-<!-- Notebook storage layer using local file system
-<property>
-  <name>zeppelin.notebook.storage</name>
-  <value>org.apache.zeppelin.notebook.repo.VFSNotebookRepo</value>
-  <description>local notebook persistence layer implementation</description>
-</property>
--->
-
 <!-- For connecting your Zeppelin with ZeppelinHub -->
 <!--
 <property>

smart-server/conf/zeppelin-site.xml

@@ -144,14 +144,6 @@
 </property>
 -->
 
-<!-- Notebook storage layer using local file system
-<property>
-  <name>zeppelin.notebook.storage</name>
-  <value>org.apache.zeppelin.notebook.repo.VFSNotebookRepo</value>
-  <description>local notebook persistence layer implementation</description>
-</property>
--->
-
 <!-- For connecting your Zeppelin with ZeppelinHub -->
 <!--
 <property>

smart-server/src/test/resources/zeppelin-site.xml

@@ -144,14 +144,6 @@
 </property>
 -->
 
-<!-- Notebook storage layer using local file system
-<property>
-  <name>zeppelin.notebook.storage</name>
-  <value>org.apache.zeppelin.notebook.repo.VFSNotebookRepo</value>
-  <description>local notebook persistence layer implementation</description>
-</property>
--->
-
 <!-- For connecting your Zeppelin with ZeppelinHub -->
 <!--
 <property>

smart-zeppelin/conf/zeppelin-site.xml

@@ -144,14 +144,6 @@
 </property>
 -->
 
-<!-- Notebook storage layer using local file system
-<property>
-  <name>zeppelin.notebook.storage</name>
-  <value>org.apache.zeppelin.notebook.repo.VFSNotebookRepo</value>
-  <description>local notebook persistence layer implementation</description>
-</property>
--->
-
 <!-- For connecting your Zeppelin with ZeppelinHub -->
 <!--
 <property>

smart-zeppelin/zeppelin-server/src/main/java/org/apache/zeppelin/server/SmartZeppelinServer.java

@@ -35,11 +35,9 @@
 import org.apache.zeppelin.interpreter.InterpreterSettingManager;
 import org.apache.zeppelin.notebook.Notebook;
 import org.apache.zeppelin.notebook.NotebookAuthorization;
-import org.apache.zeppelin.notebook.repo.NotebookRepoSync;
 import org.apache.zeppelin.rest.CredentialRestApi;
 import org.apache.zeppelin.rest.HeliumRestApi;
 import org.apache.zeppelin.rest.LoginRestApi;
-import org.apache.zeppelin.rest.NotebookRepoRestApi;
 import org.apache.zeppelin.rest.SecurityRestApi;
 import org.apache.zeppelin.rest.ZeppelinRestApi;
 import org.apache.zeppelin.scheduler.SchedulerFactory;
@@ -95,7 +93,6 @@ public class SmartZeppelinServer {
   private SchedulerFactory schedulerFactory;
   private InterpreterFactory replFactory;
   private SearchService noteSearchService;
-  private NotebookRepoSync notebookRepo;
   private NotebookAuthorization notebookAuthorization;
   private Credentials credentials;
   private DependencyResolver depResolver;
@@ -175,7 +172,6 @@ private void init() throws Exception {
     this.schedulerFactory = new SchedulerFactory();
     this.interpreterSettingManager = new InterpreterSettingManager(zconf, depResolver,
         new InterpreterOption(true));
-    this.notebookRepo = new NotebookRepoSync(zconf);
     this.noteSearchService = new LuceneSearch();
     this.notebookAuthorization = NotebookAuthorization.init(zconf);
     this.credentials = new Credentials(zconf.credentialsPersist(), zconf.getCredentialsPath());
@@ -376,14 +372,6 @@ public Set<Object> getSingletons() {
       /** Rest-api root endpoint */
       ZeppelinRestApi root = new ZeppelinRestApi();
       singletons.add(root);
-/*
-      NotebookRestApi notebookApi =
-        new NotebookRestApi(notebook, notebookWsServer, noteSearchService);
-      singletons.add(notebookApi);*/
-
-      NotebookRepoRestApi notebookRepoApi =
-        new NotebookRepoRestApi(notebookRepo);
-      singletons.add(notebookRepoApi);
 
       HeliumRestApi heliumApi = new HeliumRestApi(helium, notebook);
       singletons.add(heliumApi);

smart-zeppelin/zeppelin-zengine/pom.xml

@@ -83,22 +83,6 @@
       <artifactId>commons-logging</artifactId>
     </dependency>
 
-    <dependency>
-      <groupId>org.apache.commons</groupId>
-      <artifactId>commons-vfs2</artifactId>
-      <version>${commons.vfs2.version}</version>
-      <exclusions>
-        <exclusion>
-          <groupId>org.apache.maven.scm</groupId>
-          <artifactId>maven-scm-api</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>org.codehaus.plexus</groupId>
-          <artifactId>plexus-utils</artifactId>
-        </exclusion>
-      </exclusions>
-    </dependency>
-
     <dependency>
       <groupId>org.apache.httpcomponents</groupId>
       <artifactId>httpclient</artifactId>

smart-zeppelin/zeppelin-zengine/src/main/java/org/apache/zeppelin/conf/ZeppelinConfiguration.java

@@ -21,7 +21,6 @@
 import org.apache.commons.configuration.XMLConfiguration;
 import org.apache.commons.configuration.tree.ConfigurationNode;
 import org.apache.commons.lang.StringUtils;
-import org.apache.zeppelin.notebook.repo.GitNotebookRepo;
 import org.apache.zeppelin.util.Util;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -598,7 +597,7 @@ public static enum ConfVars {
     ZEPPELIN_NOTEBOOK_AZURE_CONNECTION_STRING("zeppelin.notebook.azure.connectionString", null),
     ZEPPELIN_NOTEBOOK_AZURE_SHARE("zeppelin.notebook.azure.share", "zeppelin"),
     ZEPPELIN_NOTEBOOK_AZURE_USER("zeppelin.notebook.azure.user", "user"),
-    ZEPPELIN_NOTEBOOK_STORAGE("zeppelin.notebook.storage", GitNotebookRepo.class.getName()),
+    ZEPPELIN_NOTEBOOK_STORAGE("zeppelin.notebook.storage", ""),
     ZEPPELIN_NOTEBOOK_ONE_WAY_SYNC("zeppelin.notebook.one.way.sync", false),
     // whether by default note is public or private
     ZEPPELIN_NOTEBOOK_PUBLIC("zeppelin.notebook.public", true),