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MDEV-25031 Not applying INSERT_*_REDUNDANT due to corruption on page

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page_apply_insert_redundant(): Replace a too strict condition
hdr_c > pextra_size. It turns out that page_cur_insert_rec_low()
is not even computing the extra_size of cur->rec when it is trying
to reuse header bytes of the preceding record.
This commit is contained in:
Marko Mäkelä 2021-03-09 18:03:31 +02:00
commit 549a70d7f0
2 changed files with 7 additions and 5 deletions
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4
storage/innobase/include/page0cur.h
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@ -1,7 +1,7 @@
/*****************************************************************************
Copyright (c) 1994, 2016, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2018, 2020, MariaDB Corporation.
Copyright (c) 2018, 2021, MariaDB Corporation.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
@ -205,7 +205,7 @@ page_cur_delete_rec(
written by page_cur_insert_rec_low() for a ROW_FORMAT=REDUNDANT page.
@param block B-tree or R-tree page in ROW_FORMAT=COMPACT or DYNAMIC
@param reuse false=allocate from PAGE_HEAP_TOP; true=reuse PAGE_FREE
@param prev byte offset of the predecessor, relative to PAGE_NEW_INFIMUM
@param prev byte offset of the predecessor, relative to PAGE_OLD_INFIMUM
@param enc_hdr encoded fixed-size header bits
@param hdr_c number of common record header bytes with prev
@param data_c number of common data bytes with prev