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fix ObTabletReplicaChecksumOperator::batch_get() function

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This commit is contained in:
obdev
2022-12-05 11:10:43 +00:00
committed by ob-robot
parent f8f024230a
commit fe0f4f29cd
3 changed files with 33 additions and 62 deletions
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2
src/share/ob_tablet_replica_checksum_iterator.cpp
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@ -112,7 +112,7 @@ int ObTabletReplicaChecksumIterator::fetch_next_batch()
if (OB_SUCC(ret)) {
checksum_items_.reuse();
if (OB_FAIL(ObTabletReplicaChecksumOperator::batch_get(tenant_id_, start_pair,
BATCH_FETCH_COUNT, compaction_scn_, *sql_proxy_, checksum_items_))) {
compaction_scn_, *sql_proxy_, checksum_items_))) {
LOG_WARN("fail to get batch checksums", KR(ret), K_(tenant_id), K(start_pair), K_(compaction_scn));
} else if (OB_UNLIKELY(0 == checksum_items_.count())) {
ret = OB_ITER_END;

45
src/share/ob_tablet_replica_checksum_operator.cpp
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@ -477,54 +477,28 @@ int ObTabletReplicaChecksumOperator::remove_residual_checksum(
int ObTabletReplicaChecksumOperator::batch_get(
const uint64_t tenant_id,
const ObTabletLSPair &start_pair,
const int64_t batch_cnt,
const SCN &compaction_scn,
ObISQLClient &sql_proxy,
ObIArray<ObTabletReplicaChecksumItem> &items)
{
int ret = OB_SUCCESS;
ObSqlString sql;
int64_t remain_cnt = batch_cnt;
int64_t ori_items_cnt = 0;
while (OB_SUCC(ret) && (remain_cnt > 0)) {
sql.reuse();
const int64_t limit_cnt = ((remain_cnt >= MAX_BATCH_COUNT) ? MAX_BATCH_COUNT : remain_cnt);
ori_items_cnt = items.count();
ObTabletLSPair last_pair;
if (remain_cnt == batch_cnt) {
last_pair = start_pair;
} else {
if (ori_items_cnt > 0) {
const ObTabletReplicaChecksumItem &last_item = items.at(ori_items_cnt - 1);
if (OB_FAIL(last_pair.init(last_item.tablet_id_, last_item.ls_id_))) {
LOG_WARN("fail to init last tablet_ls_pair", KR(ret), K(last_item));
}
} else {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("err unexpected, about tablet replica items count", KR(ret), K(tenant_id), K(start_pair),
K(batch_cnt), K(remain_cnt), K(ori_items_cnt));
}
}
if (FAILEDx(construct_batch_get_sql_str_(tenant_id, last_pair, limit_cnt, compaction_scn, sql))) {
LOG_WARN("fail to construct load sql", KR(ret), K(tenant_id), K(last_pair), K(limit_cnt),
K(compaction_scn));
if (OB_FAIL(construct_batch_get_sql_str_(tenant_id, start_pair, MAX_BATCH_COUNT,
compaction_scn, sql))) {
LOG_WARN("fail to construct load sql", KR(ret), K(tenant_id), K(start_pair), K(compaction_scn));
} else if (OB_FAIL(batch_get(tenant_id, sql, sql_proxy, items))) {
LOG_WARN("fail to batch get tablet replica checksum items", KR(ret), K(tenant_id), K(sql));
} else {
const int64_t curr_items_cnt = items.count();
if (curr_items_cnt - ori_items_cnt == limit_cnt) {
const int64_t items_cnt = items.count();
if (MAX_BATCH_COUNT == items_cnt) {
// in case the checksum of three replica belong to one tablet, were split into two batch-get,
// we will remove the last several item which belong to one tablet
// if current round item's count less than limit_cnt, it means already to the end, no need to handle.
int64_t tmp_items_cnt = curr_items_cnt;
int64_t tmp_items_cnt = items_cnt;
ObTabletReplicaChecksumItem tmp_item;
if (OB_FAIL(tmp_item.assign_key(items.at(tmp_items_cnt - 1)))) {
LOG_WARN("fail to assign key", KR(ret), "tmp_item", items.at(tmp_items_cnt - 1));
}
while (OB_SUCC(ret) && (tmp_items_cnt > 0)) {
if (tmp_item.is_same_tablet(items.at(tmp_items_cnt - 1))) {
if (OB_FAIL(items.remove(tmp_items_cnt - 1))) {
@ -540,14 +514,9 @@ int ObTabletReplicaChecksumOperator::batch_get(
if (OB_SUCC(ret)) {
if (tmp_items_cnt == 0) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpected err about item count", KR(ret), K(tmp_item), K(curr_items_cnt), K(ori_items_cnt));
} else {
remain_cnt -= limit_cnt;
LOG_WARN("unexpected err about item count", KR(ret), K(tmp_item), K(items_cnt));
}
}
} else {
remain_cnt = 0; // already get all checksum item, finish batch_get
}
}
}

4
src/share/ob_tablet_replica_checksum_operator.h
View File

@ -104,10 +104,12 @@ public:
class ObTabletReplicaChecksumOperator
{
public:
// This function is specifically designed for ObTabletReplicaChecksumIterator.
// This function would remove the last several checksum items in some cases.
// Please do not call this function in any other place, except ObTabletReplicaChecksumIterator.
static int batch_get(
const uint64_t tenant_id,
const ObTabletLSPair &start_pair,
const int64_t batch_cnt,
const SCN &compaction_scn,
common::ObISQLClient &sql_proxy,
common::ObIArray<ObTabletReplicaChecksumItem> &items);