Remove MLOG_UNDO_ERASE_END

storage/innobase/include/mtr0types.h

@@ -100,9 +100,6 @@ enum mlog_id_t {
 	/** Create an index page */
 	MLOG_PAGE_CREATE = 19,
 
-	/** erase an undo log page end */
-	MLOG_UNDO_ERASE_END = 21,
-
 	/** create an undo log header */
 	MLOG_UNDO_HDR_CREATE = 25,
 

storage/innobase/include/trx0rec.h

@@ -236,17 +236,6 @@ trx_undo_prev_version_build(
 				into this function by purge thread or not.
 				And if we read "after image" of undo log */
 
-/***********************************************************//**
-Parses a redo log record of erasing of an undo page end.
-@return end of log record or NULL */
-byte*
-trx_undo_parse_erase_page_end(
-/*==========================*/
-	byte*	ptr,	/*!< in: buffer */
-	byte*	end_ptr,/*!< in: buffer end */
-	page_t*	page,	/*!< in: page or NULL */
-	mtr_t*	mtr);	/*!< in: mtr or NULL */
-
 /** Read from an undo log record a non-virtual column value.
 @param[in,out]	ptr		pointer to remaining part of the undo record
 @param[in,out]	field		stored field

storage/innobase/log/log0recv.cc

@@ -1394,10 +1394,6 @@ recv_parse_or_apply_log_rec_body(
 		page_parse_create(block, type == MLOG_COMP_PAGE_CREATE_RTREE,
 				  true);
 		break;
-	case MLOG_UNDO_ERASE_END:
-		ut_ad(!page || page_type == FIL_PAGE_UNDO_LOG);
-		ptr = trx_undo_parse_erase_page_end(ptr, end_ptr, page, mtr);
-		break;
 	case MLOG_UNDO_HDR_CREATE:
 		ut_ad(!page || page_type == FIL_PAGE_UNDO_LOG);
 		ptr = trx_undo_parse_page_header(ptr, end_ptr, page, mtr);
@@ -3622,9 +3618,6 @@ get_mlog_string(mlog_id_t type)
 	case MLOG_PAGE_CREATE:
 		return("MLOG_PAGE_CREATE");
 
-	case MLOG_UNDO_ERASE_END:
-		return("MLOG_UNDO_ERASE_END");
-
 	case MLOG_UNDO_HDR_CREATE:
 		return("MLOG_UNDO_HDR_CREATE");
 

storage/innobase/trx/trx0rec.cc

@@ -1772,37 +1772,12 @@ trx_undo_erase_page_end(
 
 	first_free = mach_read_from_2(undo_page + TRX_UNDO_PAGE_HDR
 				      + TRX_UNDO_PAGE_FREE);
-	memset(undo_page + first_free, 0xff,
+	memset(undo_page + first_free, 0,
 	       (UNIV_PAGE_SIZE - FIL_PAGE_DATA_END) - first_free);
 
-	mlog_write_initial_log_record(undo_page, MLOG_UNDO_ERASE_END, mtr);
 	return(first_free != TRX_UNDO_PAGE_HDR + TRX_UNDO_PAGE_HDR_SIZE);
 }
 
-/***********************************************************//**
-Parses a redo log record of erasing of an undo page end.
-@return end of log record or NULL */
-byte*
-trx_undo_parse_erase_page_end(
-/*==========================*/
-	byte*	ptr,	/*!< in: buffer */
-	byte*	end_ptr MY_ATTRIBUTE((unused)), /*!< in: buffer end */
-	page_t*	page,	/*!< in: page or NULL */
-	mtr_t*	mtr)	/*!< in: mtr or NULL */
-{
-	ut_ad(ptr != NULL);
-	ut_ad(end_ptr != NULL);
-
-	if (page == NULL) {
-
-		return(ptr);
-	}
-
-	trx_undo_erase_page_end(page, mtr);
-
-	return(ptr);
-}
-
 /***********************************************************************//**
 Writes information to an undo log about an insert, update, or a delete marking
 of a clustered index record. This information is used in a rollback of the