HBASE-20220 [RSGroup] Check if table exists in the cluster before moving it to the specified regionserver group

Signed-off-by: tedyu <yuzhihong@gmail.com>

hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminClient.java

@@ -25,6 +25,8 @@ import java.util.List;
 import java.util.Set;
 
 import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.TableNotFoundException;
+import org.apache.hadoop.hbase.client.Admin;
 import org.apache.hadoop.hbase.client.Connection;
 import org.apache.hadoop.hbase.net.Address;
 import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
@@ -55,9 +57,11 @@ import org.apache.hbase.thirdparty.com.google.common.collect.Sets;
 @InterfaceAudience.Private
 class RSGroupAdminClient implements RSGroupAdmin {
   private RSGroupAdminService.BlockingInterface stub;
+  private Admin admin;
 
   public RSGroupAdminClient(Connection conn) throws IOException {
-    stub = RSGroupAdminService.newBlockingStub(conn.getAdmin().coprocessorService());
+    admin = conn.getAdmin();
+    stub = RSGroupAdminService.newBlockingStub(admin.coprocessorService());
   }
 
   @Override
@@ -114,6 +118,9 @@ class RSGroupAdminClient implements RSGroupAdmin {
     MoveTablesRequest.Builder builder = MoveTablesRequest.newBuilder().setTargetGroup(targetGroup);
     for(TableName tableName: tables) {
       builder.addTableName(ProtobufUtil.toProtoTableName(tableName));
+      if (!admin.tableExists(tableName)) {
+        throw new TableNotFoundException(tableName);
+      }
     }
     try {
       stub.moveTables(null, builder.build());
@@ -200,6 +207,9 @@ class RSGroupAdminClient implements RSGroupAdmin {
     }
     for(TableName tableName: tables) {
       builder.addTableName(ProtobufUtil.toProtoTableName(tableName));
+      if (!admin.tableExists(tableName)) {
+        throw new TableNotFoundException(tableName);
+      }
     }
     try {
       stub.moveServersAndTables(null, builder.build());

hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsBase.java

@@ -45,6 +45,7 @@ import org.apache.hadoop.hbase.RegionMetrics;
 import org.apache.hadoop.hbase.ServerMetrics;
 import org.apache.hadoop.hbase.ServerName;
 import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.TableNotFoundException;
 import org.apache.hadoop.hbase.Waiter;
 import org.apache.hadoop.hbase.client.Admin;
 import org.apache.hadoop.hbase.client.ClusterConnection;
@@ -208,7 +209,7 @@ public abstract class TestRSGroupsBase {
     try {
       rsGroupAdmin.moveTables(Sets.newHashSet(TableName.valueOf("bogustable")), "bogus");
       fail("Expected move with bogus group to fail");
-    } catch(ConstraintException ex) {
+    } catch(ConstraintException|TableNotFoundException ex) {
       //expected
     }
 
@@ -761,6 +762,37 @@ public abstract class TestRSGroupsBase {
         rsGroupAdmin.getRSGroupInfoOfTable(tableName).getName());
   }
 
+  @Test
+  public void testNonExistentTableMove() throws Exception {
+    TableName tableName = TableName.valueOf(tablePrefix + name.getMethodName());
+
+    RSGroupInfo tableGrp = rsGroupAdmin.getRSGroupInfoOfTable(tableName);
+    assertNull(tableGrp);
+
+    //test if table exists already.
+    boolean exist = admin.tableExists(tableName);
+    assertFalse(exist);
+
+    LOG.info("Moving table "+ tableName + " to " + RSGroupInfo.DEFAULT_GROUP);
+    try {
+      rsGroupAdmin.moveTables(Sets.newHashSet(tableName), RSGroupInfo.DEFAULT_GROUP);
+      fail("Table " + tableName + " shouldn't have been successfully moved.");
+    } catch(IOException ex) {
+      assertTrue(ex instanceof TableNotFoundException);
+    }
+
+    try {
+      rsGroupAdmin.moveServersAndTables(
+          Sets.newHashSet(Address.fromParts("bogus",123)),
+          Sets.newHashSet(tableName), RSGroupInfo.DEFAULT_GROUP);
+      fail("Table " + tableName + " shouldn't have been successfully moved.");
+    } catch(IOException ex) {
+      assertTrue(ex instanceof TableNotFoundException);
+    }
+    //verify group change
+    assertNull(rsGroupAdmin.getRSGroupInfoOfTable(tableName));
+  }
+
   @Test
   public void testMoveServersAndTables() throws Exception {
     LOG.info("testMoveServersAndTables");

hbase-shell/src/main/ruby/shell/commands.rb

@@ -112,6 +112,8 @@ module Shell
         handle_exceptions(cause, *args) if respond_to?(:handle_exceptions)
         # Global HBase exception handling below if not handled by respective command above
         if cause.is_a?(org.apache.hadoop.hbase.TableNotFoundException)
+          strs = cause.to_s.split(' ')
+          raise "Unknown table #{strs[0]}!" if strs.size == 1
           raise "Unknown table #{args.first}!"
         end
         if cause.is_a?(org.apache.hadoop.hbase.UnknownRegionException)