fix scn shortage about major_freeze

src/rootserver/freeze/ob_freeze_info_manager.cpp

@@ -405,7 +405,6 @@ int ObFreezeInfoManager::generate_frozen_scn(
    }
   }
 
-  int64_t new_gts = 0;
   SCN tmp_frozen_scn;
   SCN local_max_frozen_scn;
 
@@ -418,17 +417,15 @@ int ObFreezeInfoManager::generate_frozen_scn(
   } else if (max_frozen_status.frozen_scn_ != local_max_frozen_scn) {
     ret = OB_ERR_UNEXPECTED;
     LOG_WARN("max frozen_scn not same in cache and table", KR(ret), K(max_frozen_status), K(local_max_frozen_scn));
-  } else if (OB_FAIL(get_gts(new_gts))) {
+  } else if (OB_FAIL(get_gts(tmp_frozen_scn))) {
     LOG_WARN("fail to get gts", KR(ret));
-  } else if (OB_FAIL(tmp_frozen_scn.convert_for_gts(new_gts))) {
-    LOG_WARN("fail to convert for gts", KR(ret), K(new_gts));
   } else if ((tmp_frozen_scn <= snapshot_gc_scn)
              || (tmp_frozen_scn <= local_max_frozen_scn)
              || (tmp_frozen_scn <= snapshot_info.snapshot_scn_)) {
     // current time from gts must be greater than old ts
     ret = OB_ERR_UNEXPECTED;
     LOG_ERROR("get invalid frozen_timestmap", KR(ret), K(snapshot_gc_scn),
-              K(new_gts), K(tmp_frozen_scn), K(local_max_frozen_scn), K(snapshot_info));
+              K(tmp_frozen_scn), K(local_max_frozen_scn), K(snapshot_info));
   } else {
     new_frozen_scn = tmp_frozen_scn;
   }
@@ -472,8 +469,9 @@ int ObFreezeInfoManager::renew_snapshot_gc_scn()
 
   SCN cur_snapshot_gc_scn;
   SCN new_snapshot_gc_scn;
-  uint64_t new_snapshot_gc_ts = 0;
-  int64_t cur_gts = 0;
+  SCN cur_gts_scn;
+  const int64_t default_weak_ts = transaction::ObWeakReadUtil::default_max_stale_time_for_weak_consistency();
+  const uint64_t WEAK_TS_NS = (uint64_t)(default_weak_ts * 1000L);
   int64_t affected_rows = 0;
   ObMySQLTransaction trans;
   ObRecursiveMutexGuard guard(lock_);
@@ -485,13 +483,9 @@ int ObFreezeInfoManager::renew_snapshot_gc_scn()
   } else if (OB_FAIL(ObGlobalStatProxy::select_snapshot_gc_scn_for_update(trans, tenant_id_,
       cur_snapshot_gc_scn))) {
     LOG_WARN("fail to select snapshot_gc_scn for update", KR(ret), K_(tenant_id));
-  } else if (OB_FAIL(get_gts(cur_gts))) {
+  } else if (OB_FAIL(get_gts(cur_gts_scn))) {
     LOG_WARN("fail to get_gts", KR(ret));
-  } else if (FALSE_IT(new_snapshot_gc_ts =
-        (cur_gts - transaction::ObWeakReadUtil::default_max_stale_time_for_weak_consistency()))) {
-    LOG_WARN("fail to calc new snapshot_gc_scn", KR(ret), K(cur_gts));
-  } else if (OB_FAIL(new_snapshot_gc_scn.convert_for_inner_table_field(new_snapshot_gc_ts))) {
-    LOG_WARN("fail to convert val to SCN", KR(ret), K(new_snapshot_gc_ts));
+  } else if (FALSE_IT(new_snapshot_gc_scn = SCN::minus(cur_gts_scn, WEAK_TS_NS))) {
   } else if ((new_snapshot_gc_scn <= freeze_info_.latest_snapshot_gc_scn_)
              || (cur_snapshot_gc_scn >= new_snapshot_gc_scn)) {
     ret = OB_ERR_UNEXPECTED;
@@ -524,19 +518,16 @@ int ObFreezeInfoManager::renew_snapshot_gc_scn()
   return ret;
 }
 
-int ObFreezeInfoManager::get_gts(int64_t &ts) const
+int ObFreezeInfoManager::get_gts(palf::SCN &gts_scn) const
 {
   int ret = OB_SUCCESS;
   bool is_external_consistent = true;
   const int64_t timeout_us = 10 * 1000 * 1000;
-  palf::SCN tmp_scn;
-  if (OB_FAIL(OB_TS_MGR.get_ts_sync(tenant_id_, timeout_us, tmp_scn, is_external_consistent))) {
+  if (OB_FAIL(OB_TS_MGR.get_ts_sync(tenant_id_, timeout_us, gts_scn, is_external_consistent))) {
     LOG_WARN("fail to get ts sync", K(ret), K_(tenant_id), K(timeout_us));
   } else if (!is_external_consistent) { // only suppport gts in 4.0
     ret = OB_NOT_SUPPORTED;
     LOG_ERROR("cannot freeze without gts", KR(ret), K_(tenant_id));
-  } else {
-    ts = tmp_scn.get_val_for_lsn_allocator();
   }
 
   return ret;
@@ -560,11 +551,10 @@ int ObFreezeInfoManager::try_gc_freeze_info()
   ObRecursiveMutexGuard guard(lock_);
   int ret = OB_SUCCESS;
 
-  const int64_t MAX_KEEP_INTERVAL_US =  30 * 24 * 60 * 60 * 1000L * 1000L; // 30 day
+  const uint64_t MAX_KEEP_INTERVAL_NS =  30 * 24 * 60 * 60 * 1000L * 1000L * 1000L; // 30 day
   const int64_t MIN_REMAINED_VERSION_COUNT = 32;
-  const int64_t now = ObTimeUtility::current_time();
-  const uint64_t min_frozen_ts = (now - MAX_KEEP_INTERVAL_US) * 1000L; // frozen_scn is nano_second
   SCN min_frozen_scn;
+  SCN cur_gts_scn;
   SCN cur_snapshot_gc_scn;
 
   ObFreezeInfoProxy freeze_info_proxy(tenant_id_);
@@ -579,8 +569,9 @@ int ObFreezeInfoManager::try_gc_freeze_info()
     LOG_WARN("fail to select snapshot_gc_scn for update", KR(ret), K_(tenant_id));
   } else if (OB_FAIL(freeze_info_proxy.get_all_freeze_info(trans, all_frozen_status))) {
     LOG_WARN("fail to get all freeze info", KR(ret), K_(tenant_id));
-  } else if (OB_FAIL(min_frozen_scn.convert_for_inner_table_field(min_frozen_ts))) {
-    LOG_WARN("fail to convert val to SCN", KR(ret), K(min_frozen_ts));
+  } else if (OB_FAIL(get_gts(cur_gts_scn))) {
+    LOG_WARN("fail to get gts", KR(ret));
+  } else if (FALSE_IT(min_frozen_scn = SCN::minus(cur_gts_scn, MAX_KEEP_INTERVAL_NS))) {
   } else {
     const int64_t frozen_status_cnt = all_frozen_status.count();
     if (frozen_status_cnt > MIN_REMAINED_VERSION_COUNT) {

src/rootserver/freeze/ob_freeze_info_manager.h

@@ -118,7 +118,7 @@ private:
 
   int set_local_snapshot_gc_scn(const palf::SCN &new_scn);
 
-  int get_gts(int64_t &ts) const;
+  int get_gts(palf::SCN &gts_scn) const;
   int get_schema_version(const palf::SCN &frozen_scn, int64_t &schema_version) const;
 
   int get_min_freeze_info(share::ObSimpleFrozenStatus &frozen_status);

src/rootserver/freeze/ob_major_merge_progress_checker.cpp

@@ -231,7 +231,7 @@ int ObMajorMergeProgressChecker::check_tablet_data_version(
           // logonly replica no need check
         } else {
           palf::SCN rep_snapshot_scn;
-          if (OB_FAIL(rep_snapshot_scn.convert_for_inner_table_field((uint64_t)(r->get_snapshot_version())))) {
+          if (OB_FAIL(rep_snapshot_scn.convert_for_tx(r->get_snapshot_version()))) {
             LOG_WARN("fail to convert val to SCN", KR(ret), "snapshot_version", r->get_snapshot_version());
           } else {
             if ((p->smallest_snapshot_scn_ <= palf::SCN::min_scn())

src/rootserver/freeze/ob_major_merge_scheduler.cpp

@@ -669,7 +669,7 @@ int ObMajorMergeScheduler::try_update_global_merged_scn(const int64_t expected_e
             LOG_WARN("try update global last_merged_scn failed", KR(ret), K(expected_epoch));
           } else {
             ROOTSERVICE_EVENT_ADD("daily_merge", "global_merged", K_(tenant_id),
-                                  "global_broadcast_scn", global_info.global_broadcast_scn_.get_scn_val());
+                                  "global_broadcast_scn", global_info.global_broadcast_scn_);
           }
         }
       }

src/rootserver/ob_schema_history_recycler.cpp

@@ -532,7 +532,7 @@ int ObSchemaHistoryRecycler::get_recycle_schema_version_by_global_stat(
       if (OB_FAIL(check_inner_stat())) {
         LOG_WARN("schema history recycler is stopped", KR(ret));
       } else {
-        int64_t specific_merged_version = -1;
+        palf::SCN spec_frozen_scn;
         for (int64_t i = 0; OB_SUCC(ret) && i < tenant_ids.count(); i++) {
           const uint64_t tenant_id = tenant_ids.at(i);
           ObFreezeInfoProxy freeze_info_proxy(tenant_id);
@@ -551,13 +551,13 @@ int ObSchemaHistoryRecycler::get_recycle_schema_version_by_global_stat(
           } else if (frozen_status_arr.count() < reserved_num + 1) {
             ret = OB_EAGAIN;
             LOG_WARN("not exist enough frozen_scn to reserve", KR(ret), K(reserved_num), K(frozen_status_arr));
-          } else if (FALSE_IT(specific_merged_version = frozen_status_arr.at(reserved_num).frozen_scn_.get_val_for_inner_table_field())) {
+          } else if (FALSE_IT(spec_frozen_scn = frozen_status_arr.at(reserved_num).frozen_scn_)) {
           } else if (OB_FAIL(freeze_info_proxy.get_freeze_schema_info(*sql_proxy_, tenant_id,
-                     specific_merged_version, schema_version))) {
-            LOG_WARN("fail to get specific_merged_version", KR(ret), K(tenant_id), K(specific_merged_version));
+                     spec_frozen_scn, schema_version))) {
+            LOG_WARN("fail to get freeze schema info", KR(ret), K(tenant_id), K(spec_frozen_scn));
           } else if (!schema_version.is_valid()) {
             ret = OB_ERR_UNEXPECTED;
-            LOG_WARN("schema version is invalid", KR(ret), K(tenant_id), K(specific_merged_version));
+            LOG_WARN("schema version is invalid", KR(ret), K(tenant_id), K(spec_frozen_scn));
           } else {
             int64_t specific_schema_version = schema_version.schema_version_;
             if (OB_FAIL(fill_recycle_schema_versions(
@@ -566,7 +566,7 @@ int ObSchemaHistoryRecycler::get_recycle_schema_version_by_global_stat(
                        KR(ret), K(tenant_id), K(specific_schema_version));
             }
             LOG_INFO("[SCHEMA_RECYCLE] get recycle schema version by major version",
-                     KR(ret), K(tenant_id), K(specific_merged_version), K(specific_schema_version));
+                     KR(ret), K(tenant_id), K(spec_frozen_scn), K(specific_schema_version));
           }
         }
       }

src/share/ob_freeze_info_proxy.cpp

@@ -401,21 +401,21 @@ int ObFreezeInfoProxy::construct_frozen_status_(
 int ObFreezeInfoProxy::get_freeze_schema_info(
     ObISQLClient &sql_proxy,
     const uint64_t tenant_id,
-    const int64_t major_version,
+    const palf::SCN &frozen_scn,
     TenantIdAndSchemaVersion &schema_version_info)
 {
   int ret = OB_SUCCESS;
   ObSqlString sql;
   ObTimeoutCtx ctx;
   if (OB_UNLIKELY(OB_INVALID_TENANT_ID == tenant_id
-      || major_version <= 0)) {
+      || (!frozen_scn.is_valid()))) {
     ret = OB_INVALID_ARGUMENT;
-    LOG_WARN("invalid arg", KR(ret), K(tenant_id), K(major_version));
+    LOG_WARN("invalid arg", KR(ret), K(tenant_id), K(frozen_scn));
   } else if (OB_FAIL(rootserver::ObRootUtils::get_rs_default_timeout_ctx(ctx))) {
     LOG_WARN("fail to get timeout ctx", KR(ret), K(tenant_id), K(ctx));
   } else if (OB_FAIL(sql.assign_fmt("SELECT * FROM %s WHERE frozen_scn = %ld",
-                                    OB_ALL_FREEZE_INFO_TNAME, major_version))) {
-    LOG_WARN("fail to assign fmt", KR(ret), K(tenant_id), K(major_version));
+                                    OB_ALL_FREEZE_INFO_TNAME, frozen_scn.get_val_for_inner_table_field()))) {
+    LOG_WARN("fail to assign fmt", KR(ret), K(tenant_id), K(frozen_scn));
   }
 
   SMART_VAR(ObMySQLProxy::MySQLResult, res) {
@@ -430,7 +430,7 @@ int ObFreezeInfoProxy::get_freeze_schema_info(
       if (OB_ITER_END == ret) {
         ret = OB_ENTRY_NOT_EXIST;
       }
-      LOG_WARN("fail to get result", KR(ret), K(tenant_id), K(major_version));
+      LOG_WARN("fail to get result", KR(ret), K(tenant_id), K(frozen_scn));
     } else {
       schema_version_info.tenant_id_ = tenant_id;
       EXTRACT_INT_FIELD_MYSQL(*result, "schema_version", schema_version_info.schema_version_, int64_t);

src/share/ob_freeze_info_proxy.h

@@ -167,7 +167,7 @@ public:
 
   int get_freeze_schema_info(common::ObISQLClient &sql_proxy,
                             const uint64_t tenant_id,
-                            const int64_t major_version,
+                            const palf::SCN &frozen_scn,
                             TenantIdAndSchemaVersion &schema_version_info);
 
 private:

src/share/ob_zone_merge_info.cpp

@@ -229,12 +229,6 @@ ObZoneMergeInfo::MergeStatus ObZoneMergeInfo::get_merge_status(const char* merge
   return status;
 }
 
-bool ObZoneMergeInfo::is_merged(const int64_t broadcast_version) const
-{
-  return (broadcast_version == broadcast_scn_.get_scn_val())
-         && (broadcast_scn_.get_scn_val() == last_merged_scn_.get_scn_val());
-}
-
 bool ObZoneMergeInfo::is_valid() const
 {
   bool is_valid = true;

src/share/ob_zone_merge_info.h

@@ -86,7 +86,6 @@ public:
   static const char *get_merge_status_str(const MergeStatus status);
   static MergeStatus get_merge_status(const char* merge_status_str);
 
-  bool is_merged(const int64_t broadcast_version) const;
   bool is_in_merge() const;
   bool need_merge(const int64_t broadcast_version) const;
 

src/storage/tx_storage/ob_tenant_freezer.cpp

@@ -1085,7 +1085,7 @@ int ObTenantFreezer::get_global_frozen_scn_(int64_t &frozen_scn)
   if (OB_FAIL(rootserver::ObMajorFreezeHelper::get_frozen_scn(tenant_id, tmp_frozen_scn))) {
     LOG_WARN("get_frozen_scn failed", KR(ret), K(tenant_id));
   } else {
-    frozen_scn = tmp_frozen_scn.get_val_for_inner_table_field();
+    frozen_scn = tmp_frozen_scn.get_val_for_tx();
   }
 
   return ret;

src/storage/tx_storage/ob_tenant_freezer_rpc.cpp

@@ -126,7 +126,7 @@ int ObTenantFreezerP::do_major_freeze_()
   if (OB_FAIL(ObMajorFreezeHelper::get_frozen_scn(tenant_id, frozen_scn))) {
     LOG_WARN("get_frozen_scn failed", KR(ret));
   } else {
-    int64_t frozen_scn_val = frozen_scn.get_val_for_inner_table_field();
+    int64_t frozen_scn_val = frozen_scn.get_val_for_tx();
     bool need_major = true;
     ObTenantFreezer *freezer = MTL(ObTenantFreezer *);
     ObRetryMajorInfo retry_major_info = freezer->get_retry_major_info();