diff --git a/mysql-test/mysql-test-run.pl b/mysql-test/mysql-test-run.pl
index 391965ef1cc..0e6d6f32bdd 100755
--- a/mysql-test/mysql-test-run.pl
+++ b/mysql-test/mysql-test-run.pl
@@ -157,6 +157,7 @@ our $path_charsetsdir;
 our $path_client_bindir;
 our $path_language;
 our $path_timefile;
+our $path_snapshot;
 our $path_manager_log;           # Used by mysqldadmin
 our $path_slave_load_tmpdir;     # What is this?!
 our $path_mysqltest_log;
@@ -320,11 +321,14 @@ our $opt_ndb_extra_test= 0;
 
 our $exe_ndb_mgm;
 our $path_ndb_tools_dir;
-our $path_ndb_backup_dir;
+our $path_ndb_data_dir;
+our $path_ndb_slave_data_dir;
 our $file_ndb_testrun_log;
 our $flag_ndb_status_ok= 1;
 our $flag_ndb_slave_status_ok= 1;
 
+our @data_dir_lst;
+
 ######################################################################
 #
 #  Function declarations
@@ -405,9 +409,10 @@ sub main () {
     {
       kill_and_cleanup();
       mysql_install_db();
-
-#    mysql_loadstd();  FIXME copying from "std_data" .frm and
-#                      .MGR but there are none?!
+      if ( $opt_force )
+      {
+	save_installed_db();
+      }
     }
   }
 
@@ -978,6 +983,22 @@ sub command_line_setup () {
 
   $path_timefile=  "$opt_vardir/log/mysqltest-time";
   $path_mysqltest_log=  "$opt_vardir/log/mysqltest.log";
+
+  $path_snapshot= "$opt_tmpdir/snapshot_$opt_master_myport/";
+
+  # Make a list of all data_dirs
+  @data_dir_lst = (
+    $master->[0]->{'path_myddir'},
+    $master->[1]->{'path_myddir'},
+    $slave->[0]->{'path_myddir'},
+    $slave->[1]->{'path_myddir'},
+    $slave->[2]->{'path_myddir'});
+
+  foreach my $instance (@{$instance_manager->{'instances'}})
+  {
+    push(@data_dir_lst, $instance->{'path_datadir'});
+  }
+
 }
 
 
@@ -1127,8 +1148,8 @@ sub executable_setup () {
   $exe_master_mysqld= $exe_master_mysqld || $exe_mysqld;
   $exe_slave_mysqld=  $exe_slave_mysqld  || $exe_mysqld;
 
-  $path_ndb_backup_dir=
-    "$opt_vardir/ndbcluster-$opt_ndbcluster_port";
+  $path_ndb_data_dir= "$opt_vardir/ndbcluster-$opt_ndbcluster_port";
+  $path_ndb_slave_data_dir= "$opt_vardir/ndbcluster-$opt_ndbcluster_port_slave";
   $file_ndb_testrun_log= "$opt_vardir/log/ndb_testrun.log";
 }
 
@@ -1311,21 +1332,7 @@ sub kill_and_cleanup () {
   mkpath("$opt_vardir/tmp");
   mkpath($opt_tmpdir) if $opt_tmpdir ne "$opt_vardir/tmp";
 
-  # FIXME do we really need to create these all, or are they
-  # created for us when tables are created?
-
-  my @data_dir_lst = (
-    $master->[0]->{'path_myddir'},
-    $master->[1]->{'path_myddir'},
-    $slave->[0]->{'path_myddir'},
-    $slave->[1]->{'path_myddir'},
-    $slave->[2]->{'path_myddir'});
-
-  foreach my $instance (@{$instance_manager->{'instances'}})
-  {
-    push(@data_dir_lst, $instance->{'path_datadir'});
-  }
-
+  # Remove old and create new data dirs
   foreach my $data_dir (@data_dir_lst)
   {
     rmtree("$data_dir");
@@ -2266,10 +2273,9 @@ sub run_testcase ($) {
       report_failure_and_restart($tinfo);
     }
     # Save info from this testcase run to mysqltest.log
+    my $testcase_log= mtr_fromfile($path_timefile) if -f $path_timefile;
     mtr_tofile($path_mysqltest_log,"CURRENT TEST $tname\n");
-    my $testcase_log= mtr_fromfile($path_timefile);
-    mtr_tofile($path_mysqltest_log,
-	       $testcase_log);
+    mtr_tofile($path_mysqltest_log, $testcase_log);
   }
 
   # ----------------------------------------------------------------------
@@ -2283,6 +2289,80 @@ sub run_testcase ($) {
   }
 }
 
+sub copy_dir($$) {
+  my $from_dir= shift;
+  my $to_dir= shift;
+
+  mkpath("$to_dir");
+  opendir(DIR, "$from_dir")
+    or mtr_error("Can't find $from_dir$!");
+  for(readdir(DIR)) {
+    next if "$_" eq "." or "$_" eq "..";
+    if ( -d "$from_dir/$_" )
+    {
+      copy_dir("$from_dir/$_", "$to_dir/$_");
+      next;
+    }
+    copy("$from_dir/$_", "$to_dir/$_");
+  }
+  closedir(DIR);
+
+}
+
+#
+# Save a snapshot of the installed test db(s)
+# I.e take a snapshot of the var/ dir
+#
+sub save_installed_db () {
+
+  mtr_report("Saving snapshot of installed databases");
+  rmtree($path_snapshot);
+
+  foreach my $data_dir (@data_dir_lst)
+  {
+    my $name= basename($data_dir);
+    copy_dir("$data_dir", "$path_snapshot/$name");
+  }
+}
+
+#
+# Restore snapshot of the installed test db(s)
+# if the snapshot exists
+#
+sub restore_installed_db () {
+
+  if ( -d $path_snapshot)
+  {
+    kill_running_server ();
+
+    mtr_report("Restoring snapshot of databases");
+
+    foreach my $data_dir (@data_dir_lst)
+    {
+      my $name= basename($data_dir);
+      rmtree("$data_dir");
+      copy_dir("$path_snapshot/$name", "$data_dir");
+    }
+    if ($opt_with_ndbcluster)
+    {
+      # Remove the ndb_*_fs dirs, forcing a clean start of ndb
+      rmtree("$path_ndb_data_dir/ndb_1_fs");
+      rmtree("$path_ndb_data_dir/ndb_2_fs");
+
+      if ( $opt_with_ndbcluster_slave )
+      {
+	# Remove also the ndb_*_fs dirs for slave cluster
+	rmtree("$path_ndb_slave_data_dir/ndb_1_fs");
+      }
+    }
+  }
+  else
+  {
+    # No snapshot existed, just stop all processes
+    stop_masters_slaves();
+  }
+}
+
 
 sub report_failure_and_restart ($) {
   my $tinfo= shift;
@@ -2290,27 +2370,24 @@ sub report_failure_and_restart ($) {
   mtr_report_test_failed($tinfo);
   mtr_show_failed_diff($tinfo->{'name'});
   print "\n";
-  if ( ! $opt_force )
+  if ( $opt_force )
   {
-    my $test_mode= join(" ", @::glob_test_mode) || "default";
-    print "Aborting: $tinfo->{'name'} failed in $test_mode mode. ";
-    print "To continue, re-run with '--force'.\n";
-    if ( ! $opt_gdb and ! $glob_use_running_server and
-         ! $opt_ddd and ! $glob_use_embedded_server )
-    {
-      stop_masters_slaves();
-    }
-    mtr_exit(1);
+    # Restore the snapshot of the installed test db
+    restore_installed_db();
+    print "Resuming Tests\n\n";
+    return;
   }
 
-  # FIXME always terminate on failure?!
+  my $test_mode= join(" ", @::glob_test_mode) || "default";
+  print "Aborting: $tinfo->{'name'} failed in $test_mode mode. ";
+  print "To continue, re-run with '--force'.\n";
   if ( ! $opt_gdb and ! $glob_use_running_server and
        ! $opt_ddd and ! $glob_use_embedded_server )
   {
     stop_masters_slaves();
   }
-  $glob_mysqld_restart= 1;
-  print "Resuming Tests\n\n";
+  mtr_exit(1);
+
 }
 
 
@@ -3046,7 +3123,8 @@ sub run_mysqltest ($) {
   $ENV{'NDB_SLAVE_STATUS_OK'}=      $flag_ndb_slave_status_ok;
   $ENV{'NDB_EXTRA_TEST'}=           $opt_ndb_extra_test;
   $ENV{'NDB_MGM'}=                  $exe_ndb_mgm;
-  $ENV{'NDB_BACKUP_DIR'}=           $path_ndb_backup_dir;
+  $ENV{'NDB_BACKUP_DIR'}=           $path_ndb_data_dir;
+  $ENV{'NDB_DATA_DIR'}=             $path_ndb_data_dir;
   $ENV{'NDB_TOOLS_DIR'}=            $path_ndb_tools_dir;
   $ENV{'NDB_TOOLS_OUTPUT'}=         $file_ndb_testrun_log;
   $ENV{'NDB_CONNECTSTRING'}=        $opt_ndbconnectstring;
diff --git a/mysql-test/r/partition_list.result b/mysql-test/r/partition_list.result
index 21c23fd68ea..26974e5221d 100644
--- a/mysql-test/r/partition_list.result
+++ b/mysql-test/r/partition_list.result
@@ -180,3 +180,14 @@ primary key(a,b))
 partition by list (a)
 (partition x1 values in (1,2,9,4) tablespace ts1);
 drop table t1;
+CREATE TABLE t1 (s1 int) PARTITION BY LIST (s1) 
+(PARTITION p1 VALUES IN (1),
+PARTITION p2 VALUES IN (2),
+PARTITION p3 VALUES IN (3),
+PARTITION p4 VALUES IN (4),
+PARTITION p5 VALUES IN (5));
+INSERT INTO t1 VALUES (1), (2), (3), (4), (5);
+SELECT COUNT(*) FROM t1 WHERE s1 < 3;
+COUNT(*)
+2
+DROP TABLE t1;
diff --git a/mysql-test/r/partition_range.result b/mysql-test/r/partition_range.result
index 4f92e127fe0..fc9350f5902 100644
--- a/mysql-test/r/partition_range.result
+++ b/mysql-test/r/partition_range.result
@@ -337,3 +337,29 @@ a	b	c
 1	1	1
 4	1	1
 drop table t1;
+CREATE TABLE t1 (c1 int default NULL, c2 varchar(30) default NULL, 
+c3 date default NULL) engine=myisam
+PARTITION BY RANGE (year(c3)) (PARTITION p0 VALUES LESS THAN (1995),
+PARTITION p1 VALUES LESS THAN (1996) , PARTITION p2 VALUES LESS THAN (1997) ,
+PARTITION p3 VALUES LESS THAN (1998) , PARTITION p4 VALUES LESS THAN (1999) ,
+PARTITION p5 VALUES LESS THAN (2000) , PARTITION p6 VALUES LESS THAN (2001) ,
+PARTITION p7 VALUES LESS THAN (2002) , PARTITION p8 VALUES LESS THAN (2003) ,
+PARTITION p9 VALUES LESS THAN (2004) , PARTITION p10 VALUES LESS THAN (2010),
+PARTITION p11 VALUES LESS THAN MAXVALUE );
+INSERT INTO t1 VALUES (1, 'testing partitions', '1995-07-17'),
+(3, 'testing partitions','1995-07-31'),
+(5, 'testing partitions','1995-08-13'),
+(7, 'testing partitions','1995-08-26'),
+(9, 'testing partitions','1995-09-09'),
+(0, 'testing partitions','2000-07-10'),
+(2, 'testing partitions','2000-07-23'),
+(4, 'testing partitions','2000-08-05'),
+(6, 'testing partitions','2000-08-19'),
+(8, 'testing partitions','2000-09-01');
+SELECT COUNT(*) FROM t1 WHERE c3 BETWEEN '1996-12-31' AND '2000-12-31';
+COUNT(*)
+5
+SELECT COUNT(*) FROM t1 WHERE c3 < '2000-12-31';
+COUNT(*)
+10
+DROP TABLE t1;
diff --git a/mysql-test/t/partition_list.test b/mysql-test/t/partition_list.test
index af99321dcb2..3e0eaa45f32 100644
--- a/mysql-test/t/partition_list.test
+++ b/mysql-test/t/partition_list.test
@@ -110,3 +110,17 @@ partition by list (a)
 (partition x1 values in (1,2,9,4) tablespace ts1);
 
 drop table t1;
+
+#
+#Bug #17173 Partitions: less-than search fails 
+#
+CREATE TABLE t1 (s1 int) PARTITION BY LIST (s1) 
+(PARTITION p1 VALUES IN (1),
+PARTITION p2 VALUES IN (2),
+PARTITION p3 VALUES IN (3),
+PARTITION p4 VALUES IN (4),
+PARTITION p5 VALUES IN (5));
+INSERT INTO t1 VALUES (1), (2), (3), (4), (5);
+SELECT COUNT(*) FROM t1 WHERE s1 < 3;
+DROP TABLE t1;
+
diff --git a/mysql-test/t/partition_range.test b/mysql-test/t/partition_range.test
index 9a81914ed2d..a4d8c3740b7 100644
--- a/mysql-test/t/partition_range.test
+++ b/mysql-test/t/partition_range.test
@@ -361,3 +361,30 @@ subpartition by hash (a+b)
 SELECT * from t1;
 
 drop table t1;
+
+#
+# Bug #17894 Comparison with "less than" operator fails with Range partition 
+#
+CREATE TABLE t1 (c1 int default NULL, c2 varchar(30) default NULL, 
+c3 date default NULL) engine=myisam
+PARTITION BY RANGE (year(c3)) (PARTITION p0 VALUES LESS THAN (1995),
+PARTITION p1 VALUES LESS THAN (1996) , PARTITION p2 VALUES LESS THAN (1997) ,
+PARTITION p3 VALUES LESS THAN (1998) , PARTITION p4 VALUES LESS THAN (1999) ,
+PARTITION p5 VALUES LESS THAN (2000) , PARTITION p6 VALUES LESS THAN (2001) ,
+PARTITION p7 VALUES LESS THAN (2002) , PARTITION p8 VALUES LESS THAN (2003) ,
+PARTITION p9 VALUES LESS THAN (2004) , PARTITION p10 VALUES LESS THAN (2010),
+PARTITION p11 VALUES LESS THAN MAXVALUE );
+INSERT INTO t1 VALUES (1, 'testing partitions', '1995-07-17'),
+(3, 'testing partitions','1995-07-31'),
+(5, 'testing partitions','1995-08-13'),
+(7, 'testing partitions','1995-08-26'),
+(9, 'testing partitions','1995-09-09'),
+(0, 'testing partitions','2000-07-10'),
+(2, 'testing partitions','2000-07-23'),
+(4, 'testing partitions','2000-08-05'),
+(6, 'testing partitions','2000-08-19'),
+(8, 'testing partitions','2000-09-01');
+SELECT COUNT(*) FROM t1 WHERE c3 BETWEEN '1996-12-31' AND '2000-12-31';
+SELECT COUNT(*) FROM t1 WHERE c3 < '2000-12-31';
+DROP TABLE t1;
+
diff --git a/sql/opt_range.cc b/sql/opt_range.cc
index 06ca4958d2c..4e89107d406 100644
--- a/sql/opt_range.cc
+++ b/sql/opt_range.cc
@@ -2430,6 +2430,7 @@ void store_key_image_to_rec(Field *field, char *ptr, uint len)
       field->set_null();
       return;
     }
+    field->set_notnull();
     ptr++;
   }    
   field->set_key_image(ptr, len);