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[FIX] Deadlock when read tx data

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This commit is contained in:
ZenoWang
2023-02-06 22:39:55 +08:00
committed by ob-robot
parent bd8d9f2cc1
commit 275204c820
2 changed files with 26 additions and 17 deletions
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42
src/storage/tx_table/ob_tx_data_table.cpp
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@ -485,15 +485,38 @@ int ObTxDataTable::check_tx_data_with_cache_once_(const transaction::ObTransID t
{
int ret = OB_SUCCESS;
ObTxDataMemtable *tx_data_memtable = nullptr;
ObTxDataGuard tx_data_guard;
bool find = false;
if (OB_FAIL(get_tx_data_from_cache_(tx_id, tx_data_guard, find))) {
STORAGE_LOG(WARN, "get memtable range failed", KR(ret));
} else {
if (find) {
ret = fn(*tx_data_guard.tx_data());
} else {
int64_t memtable_head = -1;
int64_t memtable_tail = -1;
if (OB_FAIL(get_memtable_mgr_()->get_memtable_range(memtable_head, memtable_tail))) {
STORAGE_LOG(WARN, "get memtable range failed", KR(ret));
} else if (memtable_head != memtables_cache_.memtable_head_ || memtable_tail != memtables_cache_.memtable_tail_) {
ret = OB_EAGAIN;
} else {
ret = OB_TRANS_CTX_NOT_EXIST;
}
}
}
return ret;
}
int ObTxDataTable::get_tx_data_from_cache_(const transaction::ObTransID tx_id, ObTxDataGuard &tx_data_guard, bool &find)
{
int ret = OB_SUCCESS;
TCRLockGuard guard(memtables_cache_.lock_);
ObTableHdlArray &memtable_handles = memtables_cache_.memtable_handles_;
for (int i = memtable_handles.count() - 1; OB_SUCC(ret) && !find && i >= 0; i--) {
tx_data_memtable = nullptr;
ObTxDataMemtable *tx_data_memtable = nullptr;
if (OB_FAIL(memtable_handles.at(i).get_tx_data_memtable(tx_data_memtable))) {
ret = OB_ERR_UNEXPECTED;
STORAGE_LOG(ERROR, "get tx data memtable from table handles fail.", KR(ret), K(tx_id), K(memtable_handles.at(i)));
@ -518,21 +541,6 @@ int ObTxDataTable::check_tx_data_with_cache_once_(const transaction::ObTransID t
}
}
if (OB_SUCC(ret)) {
if (find) {
ret = fn(*tx_data_guard.tx_data());
} else {
int64_t memtable_head = -1;
int64_t memtable_tail = -1;
if (OB_FAIL(get_memtable_mgr_()->get_memtable_range(memtable_head, memtable_tail))) {
STORAGE_LOG(WARN, "get memtable range failed", KR(ret));
} else if (memtable_head != memtables_cache_.memtable_head_ || memtable_tail != memtables_cache_.memtable_tail_) {
ret = OB_EAGAIN;
} else {
ret = OB_TRANS_CTX_NOT_EXIST;
}
}
}
return ret;
}