HBASE-9462 HBaseAdmin#isTableEnabled() should throw exception for non-existent table

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1522010 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -1001,12 +1001,23 @@ public class HBaseAdmin implements Abortable, Closeable {
     return failed.toArray(new HTableDescriptor[failed.size()]);
   }
 
+  /*
+   * Checks whether table exists. If not, throws TableNotFoundException
+   * @param tableName
+   */
+  private void checkTableExistence(TableName tableName) throws IOException {
+    if (!tableExists(tableName)) {
+      throw new TableNotFoundException(tableName);
+    }
+  }
+
   /**
    * @param tableName name of table to check
    * @return true if table is on-line
    * @throws IOException if a remote or network exception occurs
    */
   public boolean isTableEnabled(TableName tableName) throws IOException {
+    checkTableExistence(tableName);
     return connection.isTableEnabled(tableName);
   }
 
@@ -1026,6 +1037,7 @@ public class HBaseAdmin implements Abortable, Closeable {
    * @throws IOException if a remote or network exception occurs
    */
   public boolean isTableDisabled(TableName tableName) throws IOException {
+    checkTableExistence(tableName);
     return connection.isTableDisabled(tableName);
   }
 

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

@@ -1709,6 +1709,21 @@ public class TestAdmin {
     TEST_UTIL.getHBaseAdmin().createTable(htd);
   }
 
+  @Test
+  public void testIsEnabledOrDisabledOnUnknownTable() throws Exception {
+    try {
+      admin.isTableEnabled(Bytes.toBytes("unkownTable"));
+      fail("Test should fail if isTableEnabled called on unknown table.");
+    } catch (IOException e) {
+    }
+
+    try {
+      admin.isTableDisabled(Bytes.toBytes("unkownTable"));
+      fail("Test should fail if isTableDisabled called on unknown table.");
+    } catch (IOException e) {
+    }
+  }
+
   @Test (timeout=300000)
   public void testGetRegion() throws Exception {
     final String name = "testGetRegion";