title: Unable to drop table
body: <p>I'm working on <code>HBase 0.98.12-hadoop2</code> and <code>phoenix-4.7.0</code>
  I created table on phoenix to map with existing table on HBase.</p>
  
  <p>After index testing, It failed to drop table with ERROR.</p>
  
  <pre><code>Error: ERROR 1010 (42M01): Not allowed to mutate table. tableName=my_table (state=42M01,code=1010)
  </code></pre>
  
  <p>To fix this, I tried to set <code>immutable_rows</code> to <code>true</code> but it didn't work.</p>
  
  <pre><code>0: jdbc:phoenix:localhost:2181:/hbase&gt; alter table "my_table" set immutable_rows=false;
  16/07/25 17:04:42 WARN query.ConnectionQueryServicesImpl: Attempt to cache older version of my_table: current= 3, new=3
  No rows affected (0.041 seconds)
  0: jdbc:phoenix:localhost:2181:/hbase&gt; drop table "my_table";
  Error: ERROR 1010 (42M01): Not allowed to mutate table. tableName=my_table(state=42M01,code=1010)
  </code></pre>
  
  <p>How can I drop it? Any advice would be appreciated.</p>