ut0mem.c, row0sel.c, row0mysql.c, ut0mem.h, row0sel.h, row0mysql.h:

  Test allocation of memory beforehand if we are trying to return a > 2 MB BLOB; normally InnoDB asserts if memory allocation fails
ha_innodb.cc:
  Do not fetch all columns if change_active_index() is called during a query; a sum(a), max(a) query seemed to do that, doing unnecessary copying (the change actually made in the previous bk ci)
  Free BLOB heap of handle when MySQL calls some ::extra()'s


sql/ha_innodb.cc:
  Do not fetch all columns if change_active_index() is called during a query; a sum(a), max(a) query seemed to do that, doing unnecessary copying (the change actually made in the previous bk ci)
innobase/include/row0mysql.h:
  Test allocation of memory beforehand if we are trying to return a > 2 MB BLOB; normally InnoDB asserts if memory allocation fails
innobase/include/row0sel.h:
  Test allocation of memory beforehand if we are trying to return a > 2 MB BLOB; normally InnoDB asserts if memory allocation fails
innobase/include/ut0mem.h:
  Test allocation of memory beforehand if we are trying to return a > 2 MB BLOB; normally InnoDB asserts if memory allocation fails
innobase/row/row0mysql.c:
  Test allocation of memory beforehand if we are trying to return a > 2 MB BLOB; normally InnoDB asserts if memory allocation fails
innobase/row/row0sel.c:
  Test allocation of memory beforehand if we are trying to return a > 2 MB BLOB; normally InnoDB asserts if memory allocation fails
innobase/ut/ut0mem.c:
  Test allocation of memory beforehand if we are trying to return a > 2 MB BLOB; normally InnoDB asserts if memory allocation fails

3 files changed, 20 insertions, 1 deletions

diff --git a/innobase/include/row0mysql.h b/innobase/include/row0mysql.h
index 25d2ab77007..972fabc74cf 100644
--- a/innobase/include/row0mysql.h
+++ b/innobase/include/row0mysql.h
@@ -52,6 +52,14 @@ row_mysql_read_var_ref_noninline(
 	ulint*	len,	/* out: variable-length field length */
 	byte*	field);	/* in: field */
 /***********************************************************************
+Frees the blob heap in prebuilt when no longer needed. */
+
+void
+row_mysql_prebuilt_free_blob_heap(
+/*==============================*/
+	row_prebuilt_t*	prebuilt);	/* in: prebuilt struct of a
+					ha_innobase:: table handle */
+/***********************************************************************
 Stores a reference to a BLOB in the MySQL format. */
 
 void
diff --git a/innobase/include/row0sel.h b/innobase/include/row0sel.h
index aa2da6fe5f6..cfc30852b87 100644
--- a/innobase/include/row0sel.h
+++ b/innobase/include/row0sel.h
@@ -115,7 +115,8 @@ row_search_for_mysql(
 /*=================*/
 					/* out: DB_SUCCESS,
 					DB_RECORD_NOT_FOUND, 
-					DB_END_OF_INDEX, or DB_DEADLOCK */
+					DB_END_OF_INDEX, DB_DEADLOCK,
+					or DB_TOO_BIG_RECORD */
 	byte*		buf,		/* in/out: buffer for the fetched
 					row in the MySQL format */
 	ulint		mode,		/* in: search mode PAGE_CUR_L, ... */
diff --git a/innobase/include/ut0mem.h b/innobase/include/ut0mem.h
index 09e0d800685..d3d04d58596 100644
--- a/innobase/include/ut0mem.h
+++ b/innobase/include/ut0mem.h
@@ -50,6 +50,16 @@ ut_malloc(
 	                /* out, own: allocated memory */
         ulint   n);     /* in: number of bytes to allocate */
 /**************************************************************************
+Tests if malloc of n bytes would succeed. ut_malloc() asserts if memory runs
+out. It cannot be used if we want to return an error message. Prints to
+stderr a message if fails. */
+
+ibool
+ut_test_malloc(
+/*===========*/
+			/* out: TRUE if succeeded */
+	ulint	n);	/* in: try to allocate this many bytes */
+/**************************************************************************
 Frees a memory bloock allocated with ut_malloc. */
 
 void