HBASE-14769 Remove unused functions and duplicate javadocs from HBaseAdmin

hbase-client/src/main/java/org/apache/hadoop/hbase/client/Admin.java

@@ -487,7 +487,10 @@ public interface Admin extends Abortable, Closeable {
    * @return Pair indicating the number of regions updated Pair.getFirst() is the regions that are
    * yet to be updated Pair.getSecond() is the total number of regions of the table
    * @throws IOException if a remote or network exception occurs
+   * @deprecated Since 2.0.0. Will be removed in 3.0.0. Use {@link #getAlterStatus(TableName)}
+   *     instead.
    */
+  @Deprecated
   Pair<Integer, Integer> getAlterStatus(final byte[] tableName) throws IOException;
 
   /**
@@ -1181,9 +1184,8 @@ public interface Admin extends Abortable, Closeable {
       throws IOException, SnapshotCreationException, IllegalArgumentException;
 
   /**
-   * public void snapshot(final String snapshotName, Create a timestamp consistent snapshot for the
+   * Create a timestamp consistent snapshot for the given table. Snapshots are considered unique
-   * given table. final byte[] tableName) throws IOException, Snapshots are considered unique based
+   * based on <b>the name of the snapshot</b>. Attempts to take a snapshot with the same name (even
-   * on <b>the name of the snapshot</b>. Attempts to take a snapshot with the same name (even a
    * different type or with different parameters) will fail with a {@link SnapshotCreationException}
    * indicating the duplicate naming. Snapshot names follow the same naming constraints as tables in
    * HBase.

hbase-it/src/test/java/org/apache/hadoop/hbase/IntegrationTestDDLMasterFailover.java

@@ -718,7 +718,7 @@ public class IntegrationTestDDLMasterFailover extends IntegrationTestBase {
         }
         TableName tableName = selected.getTableName();
         LOG.info("Deleting column family: " + cfd + " from table: " + tableName);
-        admin.deleteColumn(tableName, cfd.getName());
+        admin.deleteColumnFamily(tableName, cfd.getName());
         // assertion
         HTableDescriptor freshTableDesc = admin.getTableDescriptor(tableName);
         Assert.assertFalse("Column family: " + cfd + " was not added",

hbase-it/src/test/java/org/apache/hadoop/hbase/IntegrationTestIngestWithMOB.java

@@ -121,7 +121,7 @@ public class IntegrationTestIngestWithMOB extends IntegrationTestIngest {
       if(Arrays.equals(columnDescriptor.getName(), mobColumnFamily)) {
         columnDescriptor.setMobEnabled(true);
         columnDescriptor.setMobThreshold((long) threshold);
-        admin.modifyColumn(tableName, columnDescriptor);
+        admin.modifyColumnFamily(tableName, columnDescriptor);
       }
     }
     LOG.info("Enabling table " + getTablename());

hbase-server/src/test/java/org/apache/hadoop/hbase/HBaseTestingUtility.java

@@ -2682,13 +2682,15 @@ public class HBaseTestingUtility extends HBaseCommonTestingUtility {
 
   /**
    * Returns a Admin instance.
-   * This instance is shared between HBaseTestingUtility instance users.
+   * This instance is shared between HBaseTestingUtility instance users. Closing it has no effect,
-   * Closing it has no effect, it will be closed automatically when the
+   * it will be closed automatically when the cluster shutdowns
-   * cluster shutdowns
    *
-   * @return An Admin instance.
+   * @return HBaseAdmin instance which is guaranteed to support only {@link Admin} interface.
-   * @throws IOException
+   *   Functions in HBaseAdmin not provided by {@link Admin} interface can be changed/deleted
+   *   anytime.
+   * @deprecated Since 2.0. Will be removed in 3.0. Use {@link #getAdmin()} instead.
    */
+  @Deprecated
   public synchronized HBaseAdmin getHBaseAdmin()
   throws IOException {
     if (hbaseAdmin == null){
@@ -2697,8 +2699,18 @@ public class HBaseTestingUtility extends HBaseCommonTestingUtility {
     return hbaseAdmin;
   }
 
-  private HBaseAdmin hbaseAdmin = null;
+  /**
+   * Returns an Admin instance which is shared between HBaseTestingUtility instance users.
+   * Closing it has no effect, it will be closed automatically when the cluster shutdowns
+   */
+  public synchronized Admin getAdmin() throws IOException {
+    if (hbaseAdmin == null){
+      this.hbaseAdmin = (HBaseAdmin) getConnection().getAdmin();
+    }
+    return hbaseAdmin;
+  }
 
+  private HBaseAdmin hbaseAdmin = null;
 
   /**
    * Returns a ZooKeeperWatcher instance.

hbase-server/src/test/java/org/apache/hadoop/hbase/TestAcidGuarantees.java

@@ -88,7 +88,7 @@ public class TestAcidGuarantees implements Tool {
       // force mob enabled such that all data is mob data
       hcd.setMobEnabled(true);
       hcd.setMobThreshold(4);
-      util.getHBaseAdmin().modifyColumn(TABLE_NAME, hcd);
+      util.getHBaseAdmin().modifyColumnFamily(TABLE_NAME, hcd);
     }
   }
 

hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAdmin2.java

@@ -465,8 +465,8 @@ public class TestAdmin2 {
         onlineRegions.contains(info));
   }
 
-  private Admin createTable(TableName tableName) throws IOException {
+  private HBaseAdmin createTable(TableName tableName) throws IOException {
-    Admin admin = TEST_UTIL.getHBaseAdmin();
+    HBaseAdmin admin = TEST_UTIL.getHBaseAdmin();
 
     HTableDescriptor htd = new HTableDescriptor(tableName);
     HColumnDescriptor hcd = new HColumnDescriptor("value");

hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestMetaWithReplicas.java

@@ -400,8 +400,8 @@ public class TestMetaWithReplicas {
       }
     }
     assert(moveToServer != null);
-    String tableName = "randomTable5678";
+    TableName tableName = TableName.valueOf("randomTable5678");
-    TEST_UTIL.createTable(TableName.valueOf(tableName), "f");
+    TEST_UTIL.createTable(tableName, "f");
     assertTrue(TEST_UTIL.getHBaseAdmin().tableExists(tableName));
     TEST_UTIL.getHBaseAdmin().move(HRegionInfo.FIRST_META_REGIONINFO.getEncodedNameAsBytes(),
         Bytes.toBytes(moveToServer.getServerName()));
@@ -413,8 +413,8 @@ public class TestMetaWithReplicas {
       i++;
     } while (!moveToServer.equals(currentServer) && i < 1000); //wait for 10 seconds overall
     assert(i != 1000);
-    TEST_UTIL.getHBaseAdmin().disableTable("randomTable5678");
+    TEST_UTIL.getHBaseAdmin().disableTable(tableName);
-    assertTrue(TEST_UTIL.getHBaseAdmin().isTableDisabled("randomTable5678"));
+    assertTrue(TEST_UTIL.getHBaseAdmin().isTableDisabled(tableName));
   }
 
   @Test

hbase-server/src/test/java/org/apache/hadoop/hbase/mob/TestExpiredMobFileCleaner.java

@@ -100,7 +100,7 @@ public class TestExpiredMobFileCleaner {
     int timeToLive = expireDays * secondsOfDay();
     hcd.setTimeToLive(timeToLive);
 
-    admin.modifyColumn(tableName, hcd);
+    admin.modifyColumnFamily(tableName, hcd);
   }
 
   private void putKVAndFlush(BufferedMutator table, byte[] row, byte[] value, long ts)

hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/compactions/TestFIFOCompactionPolicy.java

@@ -21,7 +21,6 @@ import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
 
 import java.io.IOException;
-import java.util.Collection;
 import java.util.List;
 import java.util.Random;
 
@@ -41,7 +40,6 @@ import org.apache.hadoop.hbase.regionserver.HRegionServer;
 import org.apache.hadoop.hbase.regionserver.HStore;
 import org.apache.hadoop.hbase.regionserver.Region;
 import org.apache.hadoop.hbase.regionserver.Store;
-import org.apache.hadoop.hbase.regionserver.StoreFile;
 import org.apache.hadoop.hbase.testclassification.MediumTests;
 import org.apache.hadoop.hbase.testclassification.RegionServerTests;
 import org.apache.hadoop.hbase.util.Bytes;
@@ -151,7 +149,7 @@ public class TestFIFOCompactionPolicy {
     TEST_UTIL.startMiniCluster(1);
 
     HBaseAdmin admin = TEST_UTIL.getHBaseAdmin();
-    String tableName = this.tableName.getNameAsString()+"-TTL";
+    TableName tableName = TableName.valueOf(getClass().getSimpleName() + "-TTL");
     if (admin.tableExists(tableName)) {
       admin.disableTable(tableName);
       admin.deleteTable(tableName);
@@ -180,7 +178,7 @@ public class TestFIFOCompactionPolicy {
     TEST_UTIL.startMiniCluster(1);
 
     HBaseAdmin admin = TEST_UTIL.getHBaseAdmin();
-    String tableName = this.tableName.getNameAsString()+"-MinVersion";
+    TableName tableName = TableName.valueOf(getClass().getSimpleName() + "-MinVersion");
     if (admin.tableExists(tableName)) {
       admin.disableTable(tableName);
       admin.deleteTable(tableName);
@@ -211,7 +209,7 @@ public class TestFIFOCompactionPolicy {
     TEST_UTIL.startMiniCluster(1);
 
     HBaseAdmin admin = TEST_UTIL.getHBaseAdmin();
-    String tableName = this.tableName.getNameAsString()+"-MinVersion";
+    TableName tableName = TableName.valueOf(getClass().getSimpleName() + "-BlockingStoreFiles");
     if (admin.tableExists(tableName)) {
       admin.disableTable(tableName);
       admin.deleteTable(tableName);

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

@@ -210,7 +210,7 @@ module Hbase
     def enable(table_name)
       tableExists(table_name)
       return if enabled?(table_name)
-      @admin.enableTable(table_name)
+      @admin.enableTable(TableName.valueOf(table_name))
     end
 
     #----------------------------------------------------------------------------------------------
@@ -225,7 +225,7 @@ module Hbase
     def disable(table_name)
       tableExists(table_name)
       return if disabled?(table_name)
-      @admin.disableTable(table_name)
+      @admin.disableTable(TableName.valueOf(table_name))
     end
 
     #----------------------------------------------------------------------------------------------
@@ -244,14 +244,15 @@ module Hbase
     #----------------------------------------------------------------------------------------------
     # Is table disabled?
     def disabled?(table_name)
-      @admin.isTableDisabled(table_name)
+      @admin.isTableDisabled(TableName.valueOf(table_name))
     end
 
     #----------------------------------------------------------------------------------------------
     # Drops a table
     def drop(table_name)
       tableExists(table_name)
-      raise ArgumentError, "Table #{table_name} is enabled. Disable it first." if enabled?(table_name)
+      raise ArgumentError, "Table #{table_name} is enabled. Disable it first." if enabled?(
+          table_name)
 
       @admin.deleteTable(org.apache.hadoop.hbase.TableName.valueOf(table_name))
     end
@@ -447,15 +448,17 @@ module Hbase
 
     #----------------------------------------------------------------------------------------------
     # Truncates table (deletes all records by recreating the table)
-    def truncate(table_name, conf = @conf)
+    def truncate(table_name_str, conf = @conf)
-      table_description = @admin.getTableDescriptor(TableName.valueOf(table_name))
+      table_name = TableName.valueOf(table_name_str)
-      raise ArgumentError, "Table #{table_name} is not enabled. Enable it first." unless enabled?(table_name)
+      table_description = @admin.getTableDescriptor(table_name)
+      raise ArgumentError, "Table #{table_name_str} is not enabled. Enable it first." unless
+          enabled?(table_name_str)
       yield 'Disabling table...' if block_given?
       @admin.disableTable(table_name)
 
       begin
         yield 'Truncating table...' if block_given?
-        @admin.truncateTable(org.apache.hadoop.hbase.TableName.valueOf(table_name), false)
+        @admin.truncateTable(table_name, false)
       rescue => e
         # Handle the compatibility case, where the truncate method doesn't exists on the Master
         raise e unless e.respond_to?(:cause) && e.cause != nil
@@ -463,7 +466,7 @@ module Hbase
         if rootCause.kind_of?(org.apache.hadoop.hbase.DoNotRetryIOException) then
           # Handle the compatibility case, where the truncate method doesn't exists on the Master
           yield 'Dropping table...' if block_given?
-          @admin.deleteTable(org.apache.hadoop.hbase.TableName.valueOf(table_name))
+          @admin.deleteTable(table_name)
 
           yield 'Creating table...' if block_given?
           @admin.createTable(table_description)
@@ -475,9 +478,10 @@ module Hbase
 
     #----------------------------------------------------------------------------------------------
     # Truncates table while maintaing region boundaries (deletes all records by recreating the table)
-    def truncate_preserve(table_name, conf = @conf)
+    def truncate_preserve(table_name_str, conf = @conf)
-      h_table = @connection.getTable(TableName.valueOf(table_name))
+      table_name = TableName.valueOf(table_name_str)
-      locator = @connection.getRegionLocator(TableName.valueOf(table_name))
+      h_table = @connection.getTable(table_name)
+      locator = @connection.getRegionLocator(table_name)
       begin
         splits = locator.getAllRegionLocations().
             map{|i| Bytes.toString(i.getRegionInfo().getStartKey)}.
@@ -486,13 +490,13 @@ module Hbase
         locator.close()
       end
 
-      table_description = @admin.getTableDescriptor(TableName.valueOf(table_name))
+      table_description = @admin.getTableDescriptor(table_name)
       yield 'Disabling table...' if block_given?
-      disable(table_name)
+      disable(table_name_str)
 
       begin
         yield 'Truncating table...' if block_given?
-        @admin.truncateTable(org.apache.hadoop.hbase.TableName.valueOf(table_name), true)
+        @admin.truncateTable(table_name, true)
       rescue => e
         # Handle the compatibility case, where the truncate method doesn't exists on the Master
         raise e unless e.respond_to?(:cause) && e.cause != nil
@@ -500,7 +504,7 @@ module Hbase
         if rootCause.kind_of?(org.apache.hadoop.hbase.DoNotRetryIOException) then
           # Handle the compatibility case, where the truncate method doesn't exists on the Master
           yield 'Dropping table...' if block_given?
-          @admin.deleteTable(org.apache.hadoop.hbase.TableName.valueOf(table_name))
+          @admin.deleteTable(table_name)
 
           yield 'Creating table with region boundaries...' if block_given?
           @admin.createTable(table_description, splits)
@@ -534,18 +538,21 @@ module Hbase
 
     #----------------------------------------------------------------------------------------------
     # Change table structure or table options
-    def alter(table_name, wait = true, *args)
+    def alter(table_name_str, wait = true, *args)
       # Table name should be a string
-      raise(ArgumentError, "Table name must be of type String") unless table_name.kind_of?(String)
+      raise(ArgumentError, "Table name must be of type String") unless
+          table_name_str.kind_of?(String)
 
       # Table should exist
-      raise(ArgumentError, "Can't find a table: #{table_name}") unless exists?(table_name)
+      raise(ArgumentError, "Can't find a table: #{table_name_str}") unless exists?(table_name_str)
 
       # There should be at least one argument
       raise(ArgumentError, "There should be at least one argument but the table name") if args.empty?
 
+      table_name = TableName.valueOf(table_name_str)
+
       # Get table descriptor
-      htd = @admin.getTableDescriptor(TableName.valueOf(table_name))
+      htd = @admin.getTableDescriptor(table_name)
 
       # Process all args
       args.each do |arg|
@@ -573,11 +580,11 @@ module Hbase
 
           if wait == true
             puts "Updating all regions with the new schema..."
-            alter_status(table_name)
+            alter_status(table_name_str)
           end
 
           # We bypass descriptor when adding column families; refresh it to apply other args correctly.
-          htd = @admin.getTableDescriptor(TableName.valueOf(table_name))
+          htd = @admin.getTableDescriptor(table_name)
           next
         end
 
@@ -587,7 +594,7 @@ module Hbase
           # Delete column family
           if method == "delete"
             raise(ArgumentError, "NAME parameter missing for delete method") unless name
-            @admin.deleteColumn(table_name, name)
+            @admin.deleteColumn(table_name, name.to_java_bytes)
           # Unset table attributes
           elsif method == "table_att_unset"
             raise(ArgumentError, "NAME parameter missing for table_att_unset method") unless name
@@ -604,7 +611,7 @@ module Hbase
               end
               htd.remove(name)
             end
-            @admin.modifyTable(table_name.to_java_bytes, htd)
+            @admin.modifyTable(table_name, htd)
           # Unknown method
           else
             raise ArgumentError, "Unknown method: #{method}"
@@ -616,12 +623,12 @@ module Hbase
 
           if wait == true
             puts "Updating all regions with the new schema..."
-            alter_status(table_name)
+            alter_status(table_name_str)
           end
 
           if method == "delete"
             # We bypass descriptor when deleting column families; refresh it to apply other args correctly.
-            htd = @admin.getTableDescriptor(TableName.valueOf(table_name))
+            htd = @admin.getTableDescriptor(table_name)
           end
           next
         end
@@ -667,7 +674,7 @@ module Hbase
             arg.delete(key)
           end
 
-          @admin.modifyTable(table_name.to_java_bytes, htd)
+          @admin.modifyTable(table_name, htd)
 
           arg.each_key do |unknown_key|
             puts("Unknown argument ignored: %s" % [unknown_key])
@@ -675,7 +682,7 @@ module Hbase
 
           if wait == true
             puts "Updating all regions with the new schema..."
-            alter_status(table_name)
+            alter_status(table_name_str)
           end
           next
         end
@@ -792,13 +799,13 @@ module Hbase
 
     # Does table exist?
     def exists?(table_name)
-      @admin.tableExists(table_name)
+      @admin.tableExists(TableName.valueOf(table_name))
     end
 
     #----------------------------------------------------------------------------------------------
     # Is table enabled
     def enabled?(table_name)
-      @admin.isTableEnabled(table_name)
+      @admin.isTableEnabled(TableName.valueOf(table_name))
     end
 
     #----------------------------------------------------------------------------------------------
@@ -910,14 +917,23 @@ module Hbase
     #----------------------------------------------------------------------------------------------
     # Take a snapshot of specified table
     def snapshot(table, snapshot_name, *args)
+      # Table name should be a string
+      raise(ArgumentError, "Table name must be of type String") unless table.kind_of?(String)
+
+      # Snapshot name should be a string
+      raise(ArgumentError, "Snapshot name must be of type String") unless
+          snapshot_name.kind_of?(String)
+
+      table_name = TableName.valueOf(table)
       if args.empty?
-         @admin.snapshot(snapshot_name.to_java_bytes, table.to_java_bytes)
+         @admin.snapshot(snapshot_name, table_name)
       else
          args.each do |arg|
             if arg[SKIP_FLUSH] == true
-              @admin.snapshot(snapshot_name.to_java_bytes, table.to_java_bytes, SnapshotDescription::Type::SKIPFLUSH)
+              @admin.snapshot(snapshot_name, table_name,
+                              SnapshotDescription::Type::SKIPFLUSH)
             else
-               @admin.snapshot(snapshot_name.to_java_bytes, table.to_java_bytes)
+               @admin.snapshot(snapshot_name, table_name)
             end
          end
       end
@@ -926,19 +942,19 @@ module Hbase
     #----------------------------------------------------------------------------------------------
     # Restore specified snapshot
     def restore_snapshot(snapshot_name)
-      @admin.restoreSnapshot(snapshot_name.to_java_bytes)
+      @admin.restoreSnapshot(snapshot_name)
     end
 
     #----------------------------------------------------------------------------------------------
     # Create a new table by cloning the snapshot content
     def clone_snapshot(snapshot_name, table)
-      @admin.cloneSnapshot(snapshot_name.to_java_bytes, table.to_java_bytes)
+      @admin.cloneSnapshot(snapshot_name, TableName.valueOf(table))
     end
 
     #----------------------------------------------------------------------------------------------
     # Delete specified snapshot
     def delete_snapshot(snapshot_name)
-      @admin.deleteSnapshot(snapshot_name.to_java_bytes)
+      @admin.deleteSnapshot(snapshot_name)
     end
 
     #----------------------------------------------------------------------------------------------

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

@@ -64,7 +64,7 @@ module Hbase
             # Table should exist
             raise(ArgumentError, "Can't find a table: #{table_name}") unless exists?(table_name)
 
-            tableName = org.apache.hadoop.hbase.TableName.valueOf(table_name.to_java_bytes)
+            tableName = org.apache.hadoop.hbase.TableName.valueOf(table_name)
             htd = @admin.getTableDescriptor(tableName)
 
             if (family != nil)
@@ -106,7 +106,7 @@ module Hbase
              # Table should exist
              raise(ArgumentError, "Can't find a table: #{table_name}") unless exists?(table_name)
 
-             tableName = org.apache.hadoop.hbase.TableName.valueOf(table_name.to_java_bytes)
+             tableName = org.apache.hadoop.hbase.TableName.valueOf(table_name)
              htd = @admin.getTableDescriptor(tableName)
 
              if (family != nil)
@@ -165,7 +165,7 @@ module Hbase
 
     # Does table exist?
     def exists?(table_name)
-      @admin.tableExists(table_name)
+      @admin.tableExists(TableName.valueOf(table_name))
     end
 
     def isNamespace?(table_name)

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

@@ -153,7 +153,7 @@ module Hbase
 
     # Does table exist?
     def exists?(table_name)
-      @admin.tableExists(table_name)
+      @admin.tableExists(TableName.valueOf(table_name))
     end
   end
 end

hbase-shell/src/test/ruby/hbase/admin_test.rb

@@ -405,21 +405,21 @@ module Hbase
     end
 
     #-------------------------------------------------------------------------------
-    define_test "Snapshot should fail with non-string snapshot name" do
+    define_test "Snapshot should fail with non-string table name" do
-      assert_raise(NoMethodError) do
+      assert_raise(ArgumentError) do
         admin.snapshot(123, 'xxx')
       end
     end
 
-    define_test "Snapshot should fail with non-string table name" do
+    define_test "Snapshot should fail with non-string snapshot name" do
-      assert_raise(NoMethodError) do
+      assert_raise(ArgumentError) do
-        admin.snapshot(@create_test_snapshot, 123)
+        admin.snapshot(@test_name, 123)
       end
     end
 
-    define_test "Snapshot should fail without table name" do
+    define_test "Snapshot should fail without snapshot name" do
       assert_raise(ArgumentError) do
-        admin.snapshot("hbase_create_test_snapshot")
+        admin.snapshot(@test_name)
       end
     end
 

src/main/asciidoc/_chapters/cp.adoc

@@ -421,7 +421,7 @@ onwards.
 +
 [source,java]
 ----
-String tableName = "users";
+TableName tableName = TableName.valueOf("users");
 String path = "hdfs://<namenode>:<port>/user/<hadoop-user>/coprocessor.jar";
 Configuration conf = HBaseConfiguration.create();
 HBaseAdmin admin = new HBaseAdmin(conf);

src/main/asciidoc/_chapters/external_apis.adoc

@@ -741,7 +741,7 @@ the data, and deletes the table.
 [source,jython]
 ----
 import java.lang
-from org.apache.hadoop.hbase import HBaseConfiguration, HTableDescriptor, HColumnDescriptor, HConstants
+from org.apache.hadoop.hbase import HBaseConfiguration, HTableDescriptor, HColumnDescriptor, HConstants, TableName
 from org.apache.hadoop.hbase.client import HBaseAdmin, HTable, Get
 from org.apache.hadoop.hbase.io import Cell, RowResult
 
@@ -753,7 +753,7 @@ conf = HBaseConfiguration()
 # Create a table named 'test' that has two column families,
 # one named 'content, and the other 'anchor'.  The colons
 # are required for column family names.
-tablename = "test"
+tablename = TableName.valueOf("test")
 
 desc = HTableDescriptor(tablename)
 desc.addFamily(HColumnDescriptor("content:"))

src/main/asciidoc/_chapters/ops_mgt.adoc

@@ -2214,7 +2214,7 @@ or in code it would be as follows:
 
 [source,java]
 ----
-void rename(Admin admin, String oldTableName, String newTableName) {
+void rename(Admin admin, String oldTableName, TableName newTableName) {
   String snapshotName = randomName();
   admin.disableTable(oldTableName);
   admin.snapshot(snapshotName, oldTableName);

src/main/asciidoc/_chapters/schema_design.adoc

@@ -53,7 +53,7 @@ Tables must be disabled when making ColumnFamily modifications, for example:
 
 Configuration config = HBaseConfiguration.create();
 Admin admin = new Admin(conf);
-String table = "myTable";
+TableName table = TableName.valueOf("myTable");
 
 admin.disableTable(table);