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[4.x] replace get_first_memtable to get_first_nonempty_memtable in ObTablet::get_rec_log_scn

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This commit is contained in:
obdev
2022-12-13 03:38:10 +00:00
committed by ob-robot
parent c663ca5153
commit e297460c69
3 changed files with 36 additions and 12 deletions
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38
src/storage/ob_i_memtable_mgr.cpp
View File

@ -42,19 +42,43 @@ int ObIMemtableMgr::get_active_memtable(ObTableHandleV2 &handle) const
return ret;
}
int ObIMemtableMgr::get_first_memtable(ObTableHandleV2 &handle) const
int ObIMemtableMgr::get_first_nonempty_memtable(ObTableHandleV2 &handle) const
{
int ret = OB_SUCCESS;
bool is_exist = false;
SpinRLockGuard lock_guard(lock_);
if (memtable_head_ == memtable_tail_) {
ret = OB_ENTRY_NOT_EXIST;
STORAGE_LOG(DEBUG, "There is no memtable in ObIMemtableMgr.");
} else if (OB_FAIL(get_ith_memtable(memtable_head_, handle))) {
STORAGE_LOG(WARN, "fail to get ith memtable", K(ret), K(memtable_head_));
for (int64_t i = memtable_head_; OB_SUCC(ret) && i < memtable_tail_; ++i) {
ObTableHandleV2 tmp_handle;
memtable::ObMemtable *mt = NULL;
if (OB_FAIL(get_ith_memtable(i, tmp_handle))) {
STORAGE_LOG(WARN, "fail to get ith memtable", KR(ret), K(i));
} else if (OB_UNLIKELY(!tmp_handle.is_valid())) {
ret = OB_ERR_UNEXPECTED;
STORAGE_LOG(WARN, "get invalid tmp table handle", KR(ret), K(i), K(tmp_handle));
} else if (OB_FAIL(tmp_handle.get_data_memtable(mt))) {
STORAGE_LOG(WARN, "failed to get_data_memtable", KR(ret), K(i), K(tmp_handle));
} else if (OB_ISNULL(mt)) {
ret = OB_ERR_UNEXPECTED;
STORAGE_LOG(WARN, "mt is NULL", KR(ret), K(i), K(tmp_handle));
} else if (mt->get_rec_scn().is_max()) {
} else if (OB_FAIL(get_ith_memtable(i, handle))) {
STORAGE_LOG(WARN, "fail to get ith memtable", KR(ret), K(i));
} else if (OB_UNLIKELY(!handle.is_valid())) {
ret = OB_ERR_UNEXPECTED;
STORAGE_LOG(WARN, "get invalid table handle", K(ret), K(handle));
STORAGE_LOG(WARN, "get invalid table handle", KR(ret), K(i), K(handle));
} else {
is_exist = true;
break;
}
}
if (OB_FAIL(ret)) {
} else if (!is_exist) {
ret = OB_ENTRY_NOT_EXIST;
}
return ret;
}

2
src/storage/ob_i_memtable_mgr.h
View File

@ -73,7 +73,7 @@ public:
virtual int get_active_memtable(ObTableHandleV2 &handle) const;
virtual int get_first_memtable(ObTableHandleV2 &handle) const;
virtual int get_first_nonempty_memtable(ObTableHandleV2 &handle) const;
virtual int get_all_memtables(ObTableHdlArray &handle);

4
src/storage/tablet/ob_tablet.cpp
View File

@ -2758,14 +2758,14 @@ int ObTablet::get_rec_log_scn(SCN &rec_scn) {
int ret = OB_SUCCESS;
rec_scn = SCN::max_scn();
ObTableHandleV2 handle;
memtable::ObMemtable *mt;
memtable::ObMemtable *mt = NULL;
if (IS_NOT_INIT) {
ret = OB_NOT_INIT;
LOG_WARN("not inited", KR(ret), K_(is_inited));
} else if (OB_ISNULL(memtable_mgr_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("memtable_mgr is NULL", KR(ret), KPC(this));
} else if (OB_FAIL(memtable_mgr_->get_first_memtable(handle))) {
} else if (OB_FAIL(memtable_mgr_->get_first_nonempty_memtable(handle))) {
if (OB_ENTRY_NOT_EXIST == ret) {
ret = OB_SUCCESS;
} else {