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A more complete fix for bug #57345 btr_pcur_store_position abort for load

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with concurrent lock/unlock tables

Approved by Marko
This commit is contained in:
Jimmy Yang 2010-10-11 05:36:13 -07:00
commit 820e1bc6f4
3 changed files with 31 additions and 2 deletions
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14
storage/innobase/row/row0sel.c
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@ -3259,6 +3259,7 @@ row_search_for_mysql(
mem_heap_t* heap = NULL;
ulint offsets_[REC_OFFS_NORMAL_SIZE];
ulint* offsets = offsets_;
ibool table_lock_waited = FALSE;
*offsets_ = (sizeof offsets_) / sizeof *offsets_;
@ -3622,13 +3623,15 @@ shortcut_fails_too_big_rec:
trx_assign_read_view(trx);
prebuilt->sql_stat_start = FALSE;
} else {
wait_table_again:
err = lock_table(0, index->table,
prebuilt->select_lock_type == LOCK_S
? LOCK_IS : LOCK_IX, thr);
if (err != DB_SUCCESS) {
goto lock_wait_or_error;
table_lock_waited = TRUE;
goto lock_table_wait;
}
prebuilt->sql_stat_start = FALSE;
}
@ -4408,6 +4411,7 @@ lock_wait_or_error:
btr_pcur_store_position(pcur, &mtr);
lock_table_wait:
mtr_commit(&mtr);
mtr_has_extra_clust_latch = FALSE;
@ -4425,6 +4429,14 @@ lock_wait_or_error:
thr->lock_state = QUE_THR_LOCK_NOLOCK;
mtr_start(&mtr);
/* Table lock waited, go try to obtain table lock
again */
if (table_lock_waited) {
table_lock_waited = FALSE;
goto wait_table_again;
}
sel_restore_position_for_mysql(&same_user_rec,
BTR_SEARCH_LEAF, pcur,
moves_up, &mtr);