Backport of:

----------------------------------------------------------
revno: 2630.7.1
committer: Konstantin Osipov <konstantin@mysql.com>
branch nick: mysql-6.0-lock-tables-new
timestamp: Mon 2008-06-02 15:14:18 +0400
message:
  Fix a test suite timeout in partition.test and partition_csv.test

storage/csv/ha_tina.cc:
  Change the blobroot mem root life cycle and thus fix a memory hog
  in case of many csv handlers.

storage/csv/ha_tina.cc

@@ -448,6 +448,7 @@ ha_tina::ha_tina(handlerton *hton, TABLE_SHARE *table_arg)
   buffer.set((char*)byte_buffer, IO_SIZE, &my_charset_bin);
   chain= chain_buffer;
   file_buff= new Transparent_file();
+  init_alloc_root(&blobroot, BLOB_MEMROOT_ALLOC_SIZE, 0);;
 }
 
 
@@ -594,7 +595,7 @@ int ha_tina::find_current_row(uchar *buf)
   bool read_all;
   DBUG_ENTER("ha_tina::find_current_row");
 
-  free_root(&blobroot, MYF(MY_MARK_BLOCKS_FREE));
+  free_root(&blobroot, MYF(0));
 
   /*
     We do not read further then local_saved_data_file_length in order
@@ -1073,8 +1074,6 @@ int ha_tina::rnd_init(bool scan)
   records_is_known= 0;
   chain_ptr= chain;
 
-  init_alloc_root(&blobroot, BLOB_MEMROOT_ALLOC_SIZE, 0);
-
   DBUG_RETURN(0);
 }
 
@@ -1192,6 +1191,7 @@ int ha_tina::extra(enum ha_extra_function operation)
   DBUG_RETURN(0);
 }
 
+
 /*
   Set end_pos to the last valid byte of continuous area, closest
   to the given "hole", stored in the buffer. "Valid" here means,
@@ -1394,8 +1394,6 @@ int ha_tina::repair(THD* thd, HA_CHECK_OPT* check_opt)
   /* set current position to the beginning of the file */
   current_position= next_position= 0;
 
-  init_alloc_root(&blobroot, BLOB_MEMROOT_ALLOC_SIZE, 0);
-
   /* Read the file row-by-row. If everything is ok, repair is not needed. */
   while (!(rc= find_current_row(buf)))
   {
@@ -1595,8 +1593,6 @@ int ha_tina::check(THD* thd, HA_CHECK_OPT* check_opt)
   /* set current position to the beginning of the file */
   current_position= next_position= 0;
 
-  init_alloc_root(&blobroot, BLOB_MEMROOT_ALLOC_SIZE, 0);
-
   /* Read the file row-by-row. If everything is ok, repair is not needed. */
   while (!(rc= find_current_row(buf)))
   {

storage/csv/ha_tina.h

@@ -98,6 +98,7 @@ class ha_tina: public handler
       my_free(chain, 0);
     if (file_buff)
       delete file_buff;
+    free_root(&blobroot, MYF(0));
   }
   const char *table_type() const { return "CSV"; }
   const char *index_type(uint inx) { return "NONE"; }