HIVE-29403: Move the truncate table out of HMSHandler

Author: dengzhhu653

standalone-metastore/metastore-common/src/main/java/org/apache/hadoop/hive/metastore/utils/JavaUtils.java

@@ -128,6 +128,18 @@ public static <T> void setField(T req, String methodName, Class[] argsCls, Objec
     }
   }
 
+  public static <T> T getField(Object payload, String methodName) {
+    try {
+      Method method = payload.getClass().getDeclaredMethod(methodName);
+      method.setAccessible(true);
+      return (T) method.invoke(payload);
+    } catch (Exception e) {
+      LOG.error("Unable to invoke the method: {} of the instance: {}, message: {}",
+          methodName, payload, e.getMessage());
+      throw new RuntimeException(e);
+    }
+  }
+
   /**
    * Utility method for ACID to normalize logging info.  Matches
    * org.apache.hadoop.hive.metastore.api.LockRequest#toString

standalone-metastore/metastore-server/pom.xml

@@ -23,6 +23,7 @@
   <name>Hive Metastore Server</name>
   <properties>
     <standalone.metastore.path.to.root>..</standalone.metastore.path.to.root>
+    <reflections.version>0.10.2</reflections.version>
   </properties>
   <dependencies>
     <dependency>
@@ -70,6 +71,17 @@
         </exclusion>
       </exclusions>
     </dependency>
+    <dependency>
+      <groupId>org.reflections</groupId>
+      <artifactId>reflections</artifactId>
+      <version>${reflections.version}</version>
+      <exclusions>
+        <exclusion>
+          <groupId>com.google.code.findbugs</groupId>
+          <artifactId>annotations</artifactId>
+        </exclusion>
+      </exclusions>
+    </dependency>
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-databind</artifactId>

standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/HMSHandler.java

@@ -68,10 +68,10 @@
 import java.util.LinkedList;
 import java.util.Optional;
 
-import static org.apache.hadoop.hive.metastore.HMSHandler.addTruncateBaseFile;
 import static org.apache.hadoop.hive.metastore.HiveMetaHook.ALTERLOCATION;
 import static org.apache.hadoop.hive.metastore.HiveMetaHook.ALTER_TABLE_OPERATION_TYPE;
 import static org.apache.hadoop.hive.metastore.HiveMetaStoreClient.RENAME_PARTITION_MAKE_COPY;
+import static org.apache.hadoop.hive.metastore.handler.TruncateTableHandler.addTruncateBaseFile;
 import static org.apache.hadoop.hive.metastore.utils.MetaStoreServerUtils.findStaleColumns;
 import static org.apache.hadoop.hive.metastore.utils.MetaStoreServerUtils.isDbReplicationTarget;
 import static org.apache.hadoop.hive.metastore.utils.MetaStoreUtils.getDefaultCatalog;