[KYUUBI #506] Shade curator dependencies to avoid impaction by external jars

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### _Why are the changes needed?_
Shade curator dependencies to avoid impaction by external jars.

### _How was this patch tested?_
- [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible

- [ ] Add screenshots for manual tests if appropriate

- [ ] [Run test](https://kyuubi.readthedocs.io/en/latest/tools/testing.html#running-tests) locally before make a pull request

Closes #506 from turboFei/shade_curator_new.

Closes #506

4c6fdeaa [fwang12] Shade curator dependencies to avoid impaction by external jars

Authored-by: fwang12 <fwang12@ebay.com>
Signed-off-by: Cheng Pan <379377944@qq.com>

externals/kyuubi-spark-sql-engine/pom.xml

@@ -167,8 +167,29 @@
                         <includes>
                             <include>org.apache.kyuubi:kyuubi-common</include>
                             <include>org.apache.kyuubi:kyuubi-ha</include>
+                            <include>org.apache.curator:curator-client</include>
+                            <include>org.apache.curator:curator-framework</include>
+                            <include>org.apache.curator:curator-recipes</include>
+                            <include>org.apache.curator:curator-test</include>
+                            <include>org.javassist:javassist</include>
                         </includes>
                     </artifactSet>
+                    <relocations>
+                        <relocation>
+                            <pattern>org.apache.curator</pattern>
+                            <shadedPattern>${kyuubi.shade.packageName}.org.apache.curator</shadedPattern>
+                            <includes>
+                                <include>org.apache.curator.**</include>
+                            </includes>
+                        </relocation>
+                        <relocation>
+                            <pattern>org.javassist</pattern>
+                            <shadedPattern>${kyuubi.shade.packageName}.org.javassist</shadedPattern>
+                            <includes>
+                                <include>org.javassist.**</include>
+                            </includes>
+                        </relocation>
+                    </relocations>
                 </configuration>
                 <executions>
                     <execution>

kyuubi-ha/src/main/scala/org/apache/kyuubi/ha/client/ServiceDiscovery.scala

@@ -26,7 +26,7 @@ import javax.security.auth.login.Configuration
 import scala.collection.JavaConverters._
 
 import org.apache.curator.framework.{CuratorFramework, CuratorFrameworkFactory}
-import org.apache.curator.framework.recipes.nodes.PersistentEphemeralNode
+import org.apache.curator.framework.recipes.nodes.{PersistentEphemeralNode, PersistentNode}
 import org.apache.curator.framework.state.{ConnectionState, ConnectionStateListener}
 import org.apache.curator.framework.state.ConnectionState.{CONNECTED, LOST, RECONNECTED}
 import org.apache.curator.retry._
@@ -59,14 +59,14 @@ abstract class ServiceDiscovery private (
     this(classOf[ServiceDiscovery].getSimpleName, server)
 
   private var _zkClient: CuratorFramework = _
-  private var _serviceNode: PersistentEphemeralNode = _
+  private var _serviceNode: PersistentNode = _
   /**
    * a pre-defined namespace used to publish the instance of the associate service
    */
   private var _namespace: String = _
 
   def zkClient: CuratorFramework = _zkClient
-  def serviceNode: PersistentEphemeralNode = _serviceNode
+  def serviceNode: PersistentNode = _serviceNode
   def namespace: String = _namespace
 
   override def initialize(conf: KyuubiConf): Unit = {

pom.xml

@@ -105,6 +105,8 @@
         <maven.plugin.download.version>1.6.0</maven.plugin.download.version>
         <maven.plugin.silencer.version>1.6.0</maven.plugin.silencer.version>
         <maven.plugin.rat.version>0.13</maven.plugin.rat.version>
+        <!-- Package to use when relocating shaded classes. -->
+        <kyuubi.shade.packageName>org.apache.kyuubi.shade</kyuubi.shade.packageName>
     </properties>
 
     <repositories>