bk commit into 6.0 tree (mhansson:1.2591) BUG#34529

[mhansson]

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ChangeSet@stripped, 2008-02-26 15:36:13+01:00, mhansson@riffraff.(none) +3 -0
  Bug#34529: Crash on complex Falcon I_S select after ALTER .. PARTITION BY
  
  When swapping out heap I_S tables to disk, this is done after plan refinement.
  Thus, READ_RECORD::file will still point to the (deleted) heap handler at start
  of execution. This causes segmentation fault if join buffering is used and the 
  query is a star query where the result is found to be empty before accessing
  some table. In this case that table has not been initialized (i.e. had its 
  READ_RECORD re-initialized) before the cleanup routine tries to close the handler.
  Fixed by updating READ_RECORD::file when changing handler.

  mysql-test/r/information_schema_falcon.result@stripped, 2008-02-26 15:36:11+01:00, mhansson@riffraff.(none) +9 -0
    Bug#34529: 

  mysql-test/r/information_schema_falcon.result@stripped, 2008-02-26 15:36:11+01:00, mhansson@riffraff.(none) +0 -0

  mysql-test/t/information_schema_falcon.test@stripped, 2008-02-26 15:36:11+01:00, mhansson@riffraff.(none) +17 -0
    Bug#34529: 

  mysql-test/t/information_schema_falcon.test@stripped, 2008-02-26 15:36:11+01:00, mhansson@riffraff.(none) +0 -0

  sql/sql_show.cc@stripped, 2008-02-26 15:36:11+01:00, mhansson@riffraff.(none) +1 -0
    Bug#34529: The fix.

diff -Nrup a/mysql-test/r/information_schema_falcon.result b/mysql-test/r/information_schema_falcon.result
--- /dev/null	Wed Dec 31 16:00:00 196900
+++ b/mysql-test/r/information_schema_falcon.result	2008-02-26 15:36:11 +01:00
@@ -0,0 +1,9 @@
+USE information_schema;
+SET max_heap_table_size = 0;
+CREATE TABLE test.t1 ( a INT ) ENGINE = falcon;
+SELECT * 
+FROM falcon_tables ft
+JOIN falcon_serial_log_info fsli ON ( ft.tablespace = fsli.database )
+JOIN falcon_transactions ftr     ON ( ft.tablespace = ftr.database  );
+SCHEMA_NAME	TABLE_NAME	PARTITION	TABLESPACE	INTERNAL_NAME	DATABASE	TRANSACTIONS	BLOCKS	WINDOWS	BUFFERS	DATABASE	THREAD_ID	ID	STATE	UPDATES	PENDING	DEP	OLDEST	RECORDS	WAITING_FOR	STATEMENT
+DROP TABLE test.t1;
diff -Nrup a/mysql-test/t/information_schema_falcon.test b/mysql-test/t/information_schema_falcon.test
--- /dev/null	Wed Dec 31 16:00:00 196900
+++ b/mysql-test/t/information_schema_falcon.test	2008-02-26 15:36:11 +01:00
@@ -0,0 +1,17 @@
+-- source include/have_falcon.inc
+#
+# Bug#34529: Crash on complex Falcon I_S select after ALTER .. PARTITION BY
+#
+USE information_schema;
+--disable_warnings
+SET max_heap_table_size = 0;
+--enable_warnings
+
+CREATE TABLE test.t1 ( a INT ) ENGINE = falcon;
+
+SELECT * 
+FROM falcon_tables ft
+JOIN falcon_serial_log_info fsli ON ( ft.tablespace = fsli.database )
+JOIN falcon_transactions ftr     ON ( ft.tablespace = ftr.database  );
+
+DROP TABLE test.t1;
diff -Nrup a/sql/sql_show.cc b/sql/sql_show.cc
--- a/sql/sql_show.cc	2008-02-22 13:51:26 +01:00
+++ b/sql/sql_show.cc	2008-02-26 15:36:11 +01:00
@@ -6241,6 +6241,7 @@ bool get_schema_tables_result(JOIN *join
         table_list->schema_table_state= executed_place;
         break;
       }
+      tab->read_record.file= table_list->table->file;
       table_list->schema_table_state= executed_place;
     }
   }