bzr push into mysql-5.1 branch (jorgen.loland:3801 to 3802) Bug#14547952

[Jorgen Loland]

 3802 Jorgen Loland	2012-08-28
      Bug#14547952: DEBUG BUILD FAILS ASSERTION IN RECORDS_IN_RANGE()
      
      ha_innobase::records_in_range(): Remove a debug assertion
      that prohibits an open range (full table).
      This assertion catches unnecessary calls to this method, 
      but such calls are not harming correctness.

    modified:
      storage/innobase/handler/ha_innodb.cc
 3801 Marko Mäkelä	2012-08-21
      Fix regression from Bug#12845774 OPTIMISTIC INSERT/UPDATE USES WRONG
      HEURISTICS FOR COMPRESSED PAGE SIZE
      
      The fix of Bug#12845774 was supposed to skip known-to-fail
      btr_cur_optimistic_insert() calls. There was only one such call, in
      btr_cur_pessimistic_update(). All other callers of
      btr_cur_pessimistic_insert() would release and reacquire the B-tree
      page latch before attempting the pessimistic insert. This would allow
      other threads to restructure the B-tree, allowing (and requiring) the
      insert to succeed as an optimistic (single-page) operation.
      
      Failure to attempt an optimistic insert before a pessimistic one would
      trigger an attempt to split an empty page.
      
      rb:1234 approved by Sunny Bains

    modified:
      storage/innodb_plugin/ibuf/ibuf0ibuf.c
      storage/innodb_plugin/row/row0ins.c
=== modified file 'storage/innobase/handler/ha_innodb.cc'
--- a/storage/innobase/handler/ha_innodb.cc	2012-06-29 11:25:57 +0000
+++ b/storage/innobase/handler/ha_innodb.cc	2012-08-28 12:51:01 +0000
@@ -6380,7 +6380,6 @@ ha_innobase::records_in_range(
 	void*		heap2;
 
 	DBUG_ENTER("records_in_range");
-	DBUG_ASSERT(min_key || max_key);
 
 	ut_a(prebuilt->trx == thd_to_trx(ha_thd()));
 

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