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[opt][PALF] optimize ObLogHandler::is_in_sync

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This commit is contained in:
BinChenn
2023-07-14 08:42:18 +00:00
committed by ob-robot
parent e31eb905c6
commit 63858018e3
13 changed files with 10 additions and 238 deletions
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75
src/logservice/ob_log_handler.cpp
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@ -46,9 +46,6 @@ ObLogHandler::ObLogHandler() : self_(),
lc_cb_(NULL),
rpc_proxy_(NULL),
append_cost_stat_("[PALF STAT APPEND COST]", 1 * 1000 * 1000),
cached_is_log_sync_(false),
last_check_sync_ts_(OB_INVALID_TIMESTAMP),
last_renew_loc_ts_(OB_INVALID_TIMESTAMP),
is_offline_(false),
get_max_decided_scn_debug_time_(OB_INVALID_TIMESTAMP)
{
@ -501,78 +498,20 @@ int ObLogHandler::is_in_sync(bool &is_log_sync,
int ret = OB_SUCCESS;
is_log_sync = false;
is_need_rebuild = false;
LSN end_lsn;
LSN last_rebuild_lsn;
palf::PalfStat palf_stat;
RLockGuard guard(lock_);
if (IS_NOT_INIT) {
ret = OB_NOT_INIT;
} else if (is_in_stop_state_) {
ret = OB_NOT_RUNNING;
} else if (OB_FAIL(palf_handle_.get_end_lsn(end_lsn)) || !end_lsn.is_valid()) {
CLOG_LOG(WARN, "get_end_lsn failed", K(ret), K_(id), K(end_lsn));
} else if (OB_FAIL(palf_handle_.get_last_rebuild_lsn(last_rebuild_lsn))) {
CLOG_LOG(WARN, "get_last_rebuild_lsn failed", K(ret), K_(id));
} else if (last_rebuild_lsn.is_valid() && end_lsn < last_rebuild_lsn) {
is_need_rebuild = true;
} else if (OB_FAIL(palf_handle_.stat(palf_stat))) {
CLOG_LOG(WARN, "palf stat failed", K(ret), K_(id));
} else {
// check is log sync
is_log_sync = palf_stat.is_in_sync_;
is_need_rebuild = palf_stat.is_need_rebuild_;
}
SCN local_max_scn;
SCN leader_max_scn;
if (OB_SUCC(ret)) {
static const int64_t SYNC_DELAY_TIME_THRESHOLD_US = 3 * 1000 * 1000L;
const int64_t SYNC_GET_LEADER_INFO_INTERVAL_US = SYNC_DELAY_TIME_THRESHOLD_US / 2;
bool unused_state = false;
int64_t unused_id;
common::ObRole role;
if (OB_FAIL(palf_handle_.get_role(role, unused_id, unused_state))) {
CLOG_LOG(WARN, "get_role failed", K(ret), K_(id));
} else if (LEADER == role) {
is_log_sync = true;
} else if (OB_FAIL(palf_handle_.get_max_scn(local_max_scn)) || !local_max_scn.is_valid()) {
CLOG_LOG(WARN, "get_max_scn failed", K(ret), K_(id), K(local_max_scn));
} else if (palf_reach_time_interval(SYNC_GET_LEADER_INFO_INTERVAL_US, last_check_sync_ts_)) {
// if reachs time interval, get max_scn of leader with sync RPC
if (OB_FAIL(get_leader_max_scn_(leader_max_scn))) {
CLOG_LOG(WARN, "get_palf_max_scn failed", K(ret), K_(id));
}
} else {
is_log_sync = cached_is_log_sync_;
}
if (OB_SUCC(ret) && leader_max_scn.is_valid()) {
is_log_sync = (leader_max_scn.convert_to_ts() - local_max_scn.convert_to_ts() <= SYNC_DELAY_TIME_THRESHOLD_US);
cached_is_log_sync_ = is_log_sync;
}
ret = OB_SUCCESS;
}
if (REACH_TIME_INTERVAL(500 * 1000)) {
CLOG_LOG(INFO, "is_in_sync", K(ret), K_(id), K(is_log_sync), K(leader_max_scn), K(local_max_scn),
K_(cached_is_log_sync), K(is_need_rebuild), K(end_lsn), K(last_rebuild_lsn));
}
return ret;
}
int ObLogHandler::get_leader_max_scn_(SCN &max_scn) const
{
int ret = OB_SUCCESS;
common::ObAddr leader;
max_scn.reset();
LogGetLeaderMaxScnReq req(self_, id_);
LogGetLeaderMaxScnResp resp;
bool need_renew_leader = false;
if (OB_FAIL(lc_cb_->nonblock_get_leader(id_, leader))) {
CLOG_LOG(WARN, "get_leader failed", K(ret), K_(id));
need_renew_leader = true;
} else if (OB_FAIL(rpc_proxy_->to(leader).timeout(500 * 1000).trace_time(true). \
by(MTL_ID()).get_leader_max_scn(req, resp))) {
CLOG_LOG(WARN, "get_palf_max_scn failed", K(ret), K_(id));
need_renew_leader = true;
} else {
max_scn = resp.max_scn_;
}
if (need_renew_leader && palf_reach_time_interval(500 * 1000, last_renew_loc_ts_)) {
(void) lc_cb_->nonblock_renew_leader(id_);
if (REACH_TIME_INTERVAL(2 * 1000 * 1000)) {
CLOG_LOG(INFO, "is_in_sync", K(ret), K_(id), K(is_log_sync), K(is_need_rebuild));
}
return ret;
}