branches/zip: page_copy_rec_list_end(), page_copy_rec_list_start():

Update PAGE_MAX_TRX_ID before attempting to compress the page.  This
fixes Issue #382 (a debug assertion failure in page_zip_reorganize())
and reduces the generated redo log.  There was no bug or crash in
non-debug builds.

page/page0page.c

@@ -658,6 +658,14 @@ page_copy_rec_list_end(
 						index, mtr);
 	}
 
+	/* Update PAGE_MAX_TRX_ID on the uncompressed page.
+	Modifications will be redo logged and copied to the compressed
+	page in page_zip_compress() or page_zip_reorganize() below. */
+	if (dict_index_is_sec_or_ibuf(index) && page_is_leaf(page)) {
+		page_update_max_trx_id(new_block, NULL,
+				       page_get_max_trx_id(page), mtr);
+	}
+
 	if (UNIV_LIKELY_NULL(new_page_zip)) {
 		mtr_set_log_mode(mtr, log_mode);
 
@@ -696,15 +704,10 @@ page_copy_rec_list_end(
 		}
 	}
 
-	/* Update the lock table, MAX_TRX_ID, and possible hash index */
+	/* Update the lock table and possible hash index */
 
 	lock_move_rec_list_end(new_block, block, rec);
 
-	if (dict_index_is_sec_or_ibuf(index) && page_is_leaf(page)) {
-		page_update_max_trx_id(new_block, new_page_zip,
-				       page_get_max_trx_id(page), mtr);
-	}
-
 	btr_search_move_or_delete_hash_entries(new_block, block, index);
 
 	return(ret);
@@ -772,6 +775,16 @@ page_copy_rec_list_start(
 		mem_heap_free(heap);
 	}
 
+	/* Update PAGE_MAX_TRX_ID on the uncompressed page.
+	Modifications will be redo logged and copied to the compressed
+	page in page_zip_compress() or page_zip_reorganize() below. */
+	if (dict_index_is_sec_or_ibuf(index)
+	    && page_is_leaf(page_align(rec))) {
+		page_update_max_trx_id(new_block, NULL,
+				       page_get_max_trx_id(page_align(rec)),
+				       mtr);
+	}
+
 	if (UNIV_LIKELY_NULL(new_page_zip)) {
 		mtr_set_log_mode(mtr, log_mode);
 
@@ -809,14 +822,7 @@ page_copy_rec_list_start(
 		}
 	}
 
-	/* Update MAX_TRX_ID, the lock table, and possible hash index */
-
-	if (dict_index_is_sec_or_ibuf(index)
-	    && page_is_leaf(page_align(rec))) {
-		page_update_max_trx_id(new_block, new_page_zip,
-				       page_get_max_trx_id(page_align(rec)),
-				       mtr);
-	}
+	/* Update the lock table and possible hash index */
 
 	lock_move_rec_list_start(new_block, block, rec, ret);