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Revert "MDEV-15458 Segfault in heap_scan() upon UPDATE after ADD SYSTEM VERSIONING"

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This partially reverts 43623f04a98

Engines have to set ::position() after ::write_row(), otherwise
the server won't be able to refer to the row just inserted.
This is important for high-level indexes.

heap part isn't reverted, so heap doesn't support high-level indexes.
to fix this, it'll need info->lastpos in addition to info->current_ptr
This commit is contained in:
Sergei Golubchik 2024-02-09 23:50:26 +01:00
parent 07ec1a9e37
commit eff16d7593
3 changed files with 19 additions and 11 deletions
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25
sql/sql_delete.cc
View File

@ -296,15 +296,22 @@ int TABLE::delete_row()
store_record(this, record[1]);
vers_update_end();
int err= file->ha_update_row(record[1], record[0]);
/*
MDEV-23644: we get HA_ERR_FOREIGN_DUPLICATE_KEY iff we already got history
row with same trx_id which is the result of foreign key action, so we
don't need one more history row.
*/
if (err == HA_ERR_FOREIGN_DUPLICATE_KEY)
return file->ha_delete_row(record[0]);
return err;
int err;
if ((err= file->extra(HA_EXTRA_REMEMBER_POS)))
return err;
if ((err= file->ha_update_row(record[1], record[0])))
{
/*
MDEV-23644: we get HA_ERR_FOREIGN_DUPLICATE_KEY iff we already got
history row with same trx_id which is the result of foreign key action,
so we don't need one more history row.
*/
if (err == HA_ERR_FOREIGN_DUPLICATE_KEY)
file->ha_delete_row(record[0]);
else
return err;
}
return file->extra(HA_EXTRA_RESTORE_POS);
}

4
storage/maria/ma_write.c
View File

@ -89,7 +89,7 @@ int maria_write(MARIA_HA *info, const uchar *record)
MARIA_SHARE *share= info->s;
uint i;
int save_errno;
MARIA_RECORD_POS filepos, oldpos= info->cur_row.lastpos;
MARIA_RECORD_POS filepos;
uchar *buff;
my_bool lock_tree= share->lock_key_trees;
my_bool fatal_error;
@ -303,7 +303,7 @@ int maria_write(MARIA_HA *info, const uchar *record)
share->state.changed|= STATE_NOT_MOVABLE | STATE_NOT_ZEROFILLED;
info->state->changed= 1;
info->cur_row.lastpos= oldpos;
info->cur_row.lastpos= filepos;
_ma_writeinfo(info, WRITEINFO_UPDATE_KEYFILE);
if (info->invalidator != 0)
{

1
storage/myisam/mi_write.c
View File

@ -153,6 +153,7 @@ int mi_write(MI_INFO *info, const uchar *record)
info->update= (HA_STATE_CHANGED | HA_STATE_AKTIV | HA_STATE_WRITTEN |
HA_STATE_ROW_CHANGED);
info->state->records++;
info->lastpos=filepos;
myisam_log_record(MI_LOG_WRITE,info,record,filepos,0);
(void) _mi_writeinfo(info, WRITEINFO_UPDATE_KEYFILE);
if (info->invalidator != 0)