fix message when trying new table due to mismatch in SQLiteDB

also silence these messages in tests

IPython/parallel/controller/sqlitedb.py

@@ -226,15 +226,16 b' class SQLiteDB(BaseDB):'
             # isolation_level = None)#,
              cached_statements=64)
         # print dir(self._db)
-        first_table = self.table
+        first_table = previous_table = self.table
         i=0
         while not self._check_table():
             i+=1
             self.table = first_table+'_%i'%i
             self.log.warn(
                 "Table %s exists and doesn't match db format, trying %s"%
-                (first_table,self.table)
+                (previous_table, self.table)
             )
+            previous_table = self.table
 
         self._db.execute("""CREATE TABLE IF NOT EXISTS %s
                 (msg_id text PRIMARY KEY,

IPython/parallel/tests/test_db.py

@@ -18,6 +18,7 b' Authors:'
 
 from __future__ import division
 
+import logging
 import os
 import tempfile
 import time
@@ -226,7 +227,9 b' class TestSQLiteBackend(TestDictBackend):'
     @dec.skip_without('sqlite3')
     def create_db(self):
         location, fname = os.path.split(temp_db)
-        return SQLiteDB(location=location, fname=fname)
+        log = logging.getLogger('test')
+        log.setLevel(logging.CRITICAL)
+        return SQLiteDB(location=location, fname=fname, log=log)
     
     def tearDown(self):
         self.db._db.close()