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Avoid get_tablet in get_rec_scn after ddl commit success

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This commit is contained in:
Hongqin-Li
2023-04-18 15:11:39 +00:00
committed by ob-robot
parent c0ddd2f851
commit b9dbfe311c
1 changed files with 35 additions and 26 deletions
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61
src/storage/ddl/ob_tablet_ddl_kv_mgr.cpp
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@ -160,6 +160,11 @@ int ObTabletDDLKvMgr::ddl_start(ObTablet &tablet,
saved_start_scn = start_scn_;
saved_snapshot_version = table_key_.get_snapshot_version();
commit_scn_ = get_commit_scn_nolock(tablet.get_tablet_meta());
if (checkpoint_scn.is_valid_and_not_min()) {
if (tablet.get_tablet_meta().table_store_flag_.with_major_sstable() && tablet.get_tablet_meta().ddl_commit_scn_.is_valid_and_not_min()) {
success_start_scn_ = tablet.get_tablet_meta().ddl_start_scn_;
}
}
}
}
if (OB_SUCC(ret) && !checkpoint_scn.is_valid_and_not_min()) {
@ -349,39 +354,43 @@ int ObTabletDDLKvMgr::get_rec_scn(SCN &rec_scn)
int ret = OB_SUCCESS;
ObLSHandle ls_handle;
ObTabletHandle tablet_handle;
const bool is_commit_succ = is_commit_success();
if (OB_UNLIKELY(!is_inited_)) {
ret = OB_NOT_INIT;
LOG_WARN("not init", K(ret), K(is_inited_));
} else if (OB_FAIL(MTL(ObLSService *)->get_ls(ls_id_, ls_handle, ObLSGetMod::DDL_MOD))) {
LOG_WARN("failed to get log stream", K(ret), K(ls_id_));
} else if (OB_FAIL(ls_handle.get_ls()->get_tablet(tablet_id_,
tablet_handle,
ObTabletCommon::NO_CHECK_GET_TABLET_TIMEOUT_US))) {
LOG_WARN("get tablet handle failed", K(ret), K(ls_id_), K(tablet_id_));
}
// rec scn of ddl start log
if (OB_SUCC(ret)) {
const ObTabletMeta &tablet_meta = tablet_handle.get_obj()->get_tablet_meta();
ObLatchRGuard guard(lock_, ObLatchIds::TABLET_DDL_KV_MGR_LOCK);
if (start_scn_.is_valid_and_not_min() && start_scn_ != tablet_meta.ddl_start_scn_) {
// has a latest start log and not flushed to tablet meta, keep it
rec_scn = SCN::min(rec_scn, start_scn_);
if (OB_SUCC(ret) && !is_commit_succ) {
if (OB_FAIL(MTL(ObLSService *)->get_ls(ls_id_, ls_handle, ObLSGetMod::DDL_MOD))) {
LOG_WARN("failed to get log stream", K(ret), K(ls_id_));
} else if (OB_FAIL(ls_handle.get_ls()->get_tablet(tablet_id_,
tablet_handle,
ObTabletCommon::NO_CHECK_GET_TABLET_TIMEOUT_US))) {
LOG_WARN("get tablet handle failed", K(ret), K(ls_id_), K(tablet_id_));
}
}
// rec scn of ddl commit log
if (OB_SUCC(ret)) {
const ObTabletMeta &tablet_meta = tablet_handle.get_obj()->get_tablet_meta();
if (tablet_meta.ddl_commit_scn_.is_valid_and_not_min()) {
// has commit log and already dumped to tablet meta, skip
} else {
const SCN commit_scn = get_commit_scn(tablet_meta);
if (commit_scn.is_valid_and_not_min()) {
// has commit log and not yet dumped to tablet meta
rec_scn = SCN::min(rec_scn, commit_scn);
// rec scn of ddl start log
if (OB_SUCC(ret)) {
const ObTabletMeta &tablet_meta = tablet_handle.get_obj()->get_tablet_meta();
ObLatchRGuard guard(lock_, ObLatchIds::TABLET_DDL_KV_MGR_LOCK);
if (start_scn_.is_valid_and_not_min() && start_scn_ != tablet_meta.ddl_start_scn_) {
// has a latest start log and not flushed to tablet meta, keep it
rec_scn = SCN::min(rec_scn, start_scn_);
}
}
// rec scn of ddl commit log
if (OB_SUCC(ret)) {
const ObTabletMeta &tablet_meta = tablet_handle.get_obj()->get_tablet_meta();
if (tablet_meta.ddl_commit_scn_.is_valid_and_not_min()) {
// has commit log and already dumped to tablet meta, skip
} else {
// no commit log
const SCN commit_scn = get_commit_scn(tablet_meta);
if (commit_scn.is_valid_and_not_min()) {
// has commit log and not yet dumped to tablet meta
rec_scn = SCN::min(rec_scn, commit_scn);
} else {
// no commit log
}
}
}
}