WL 2826: Fourth step

Remove partition state from frm file
Ensure we can still load tables created in 5.1.6 for the time
being


sql/table.cc:
  Remove partition state from frm file
  Ensure we can still load tables created in 5.1.6 for the time
  being
sql/unireg.cc:
  Remove partition state from frm file
  Ensure we can still load tables created in 5.1.6 for the time
  being

sql/table.cc

@@ -638,38 +638,15 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
 #endif
       next_chunk+= 5 + partition_info_len;
     }
-    if (share->mysql_version > 50105 && next_chunk + 5 < buff_end)
+    if (share->mysql_version == 50106)
     {
       /*
-        Partition state was introduced to support partition management in version 5.1.5
+         Partition state array was here in version 5.1.6, this code makes
+         it possible to load a 5.1.6 table in later versions. Can most
+         likely be removed at some point in time.
        */
-      uint32 part_state_len= uint4korr(next_chunk);
-#ifdef WITH_PARTITION_STORAGE_ENGINE
-      if ((share->part_state_len= part_state_len))
-        if (!(share->part_state=
-              (uchar*) memdup_root(&share->mem_root, next_chunk + 4,
-                                   part_state_len)))
-        {
-          my_free(buff, MYF(0));
-          goto err;
-        }
-#else
-      if (part_state_len)
-      {
-        DBUG_PRINT("info", ("WITH_PARTITION_STORAGE_ENGINE is not defined"));
-        my_free(buff, MYF(0));
-        goto err;
+      next_chunk+= 4;
     }
-#endif
-      next_chunk+= 4 + part_state_len;
-    }
-#ifdef WITH_PARTITION_STORAGE_ENGINE
-    else
-    {
-      share->part_state_len= 0;
-      share->part_state= NULL;
-    }
-#endif
     keyinfo= share->key_info;
     for (i= 0; i < keys; i++, keyinfo++)
     {

sql/unireg.cc

@@ -136,7 +136,6 @@ bool mysql_create_frm(THD *thd, const char *file_name,
   if (part_info)
   {
     create_info->extra_size+= part_info->part_info_len;
-    create_info->extra_size+= part_info->part_state_len;
   }
 #endif
 
@@ -209,12 +208,6 @@ bool mysql_create_frm(THD *thd, const char *file_name,
         my_write(file, (const byte*)part_info->part_info_string,
                  part_info->part_info_len + 1, MYF_RW))
       goto err;
-    DBUG_PRINT("info", ("Part state len = %d", part_info->part_state_len));
-    int4store(buff, part_info->part_state_len);
-    if (my_write(file, (const byte*)buff, 4, MYF_RW) ||
-        my_write(file, (const byte*)part_info->part_state,
-                 part_info->part_state_len, MYF_RW))
-      goto err;
   }
   else
 #endif