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[FEAT MERGE] ELR & WeakRead feature enhancement

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This commit is contained in:
obdev
2022-12-27 05:08:57 +00:00
committed by ob-robot
parent 9f3038df4f
commit 5aed6bd3d8
61 changed files with 1664 additions and 142 deletions
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56
src/sql/ob_sql_trans_control.cpp
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@ -35,6 +35,7 @@
#include "observer/ob_server_struct.h"
#include "observer/ob_server.h"
#include "storage/tx/wrs/ob_weak_read_util.h" //ObWeakReadUtil
#include "storage/tx_storage/ob_ls_service.h"
#include "sql/das/ob_das_dml_ctx_define.h"
#include "share/deadlock/ob_deadlock_detector_mgr.h"
@ -463,9 +464,7 @@ int ObSqlTransControl::start_stmt(ObExecContext &exec_ctx)
OZ (stmt_sanity_check_(session, plan, plan_ctx));
OZ (txs->sql_stmt_start_hook(session->get_xid(), *session->get_tx_desc(), session->get_sessid()));
if (OB_SUCC(ret)
&& txs->get_tx_elr_util().check_and_update_tx_elr_info(
*session->get_tx_desc(),
session->get_early_lock_release())) {
&& txs->get_tx_elr_util().check_and_update_tx_elr_info(*session->get_tx_desc())) {
LOG_WARN("check and update tx elr info", K(ret), KPC(session->get_tx_desc()));
}
uint32_t session_id = 0;
@ -576,7 +575,8 @@ int ObSqlTransControl::stmt_setup_snapshot_(ObSQLSessionInfo *session,
auto &snapshot = das_ctx.get_snapshot();
if (cl == ObConsistencyLevel::WEAK || cl == ObConsistencyLevel::FROZEN) {
SCN snapshot_version = SCN::min_scn();
if (OB_FAIL(txs->get_weak_read_snapshot_version(snapshot_version))) {
if (OB_FAIL(txs->get_weak_read_snapshot_version(session->get_ob_max_read_stale_time(),
snapshot_version))) {
TRANS_LOG(WARN, "get weak read snapshot fail", KPC(txs));
} else {
snapshot.init_weak_read(snapshot_version);
@ -989,5 +989,53 @@ void ObSqlTransControl::clear_xa_branch(const ObXATransID &xid, ObTxDesc *&tx_de
MTL(transaction::ObXAService *)->clear_xa_branch(xid, tx_desc);
}
int ObSqlTransControl::check_ls_readable(const uint64_t tenant_id,
const share::ObLSID &ls_id,
const common::ObAddr &addr,
const int64_t max_stale_time_ns,
bool &can_read)
{
int ret = OB_SUCCESS;
can_read = false;
if (!ls_id.is_valid()
|| !addr.is_valid()
|| max_stale_time_ns <= 0) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("invalid argument", K(ls_id), K(addr), K(max_stale_time_ns));
} else if (observer::ObServer::get_instance().get_self() == addr) {
// distribute plan and check black list
ObBLKey blk;
bool in_black_list = false;
if (OB_FAIL(blk.init(addr, tenant_id, ls_id))) {
LOG_WARN("ObBLKey init error", K(ret), K(addr), K(tenant_id), K(ls_id));
} else if (OB_FAIL(ObBLService::get_instance().check_in_black_list(blk, in_black_list))) {
LOG_WARN("check in black list error", K(ret), K(blk));
} else {
can_read = (in_black_list ? false : true);
}
} else {
storage::ObLSService *ls_svr = MTL(storage::ObLSService *);
storage::ObLSHandle handle;
ObLS *ls = nullptr;
if (OB_ISNULL(ls_svr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("log stream service is NULL", K(ret));
} else if (OB_FAIL(ls_svr->get_ls(ls_id, handle, ObLSGetMod::TRANS_MOD))) {
LOG_WARN("get id service log stream failed");
} else if (OB_ISNULL(ls = handle.get_ls())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("id service log stream not exist");
} else if (ObTimeUtility::current_time() - max_stale_time_ns / 1000
< ls->get_ls_wrs_handler()->get_ls_weak_read_ts().convert_to_ts()) {
can_read = true;
}
}
return ret;
}
}/* ns sql*/
}/* ns oceanbase */