| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| #ifndef KUDU_TABLET_TABLET_REPLICA_MM_OPS_H_ |
| #define KUDU_TABLET_TABLET_REPLICA_MM_OPS_H_ |
| |
| #include <cstdint> |
| #include <string> |
| |
| #include "kudu/gutil/ref_counted.h" |
| #include "kudu/gutil/stringprintf.h" |
| #include "kudu/tablet/tablet.h" |
| #include "kudu/tablet/tablet_replica.h" |
| #include "kudu/util/locks.h" |
| #include "kudu/util/maintenance_manager.h" |
| #include "kudu/util/metrics.h" |
| #include "kudu/util/semaphore.h" |
| #include "kudu/util/stopwatch.h" |
| |
| namespace kudu { |
| namespace tablet { |
| |
| class FlushOpPerfImprovementPolicy { |
| public: |
| ~FlushOpPerfImprovementPolicy() {} |
| |
| // Sets the performance improvement based on the anchored ram if it's over the threshold, |
| // else it will set it based on how long the mem-store has been non-empty. |
| static void SetPerfImprovementForFlush(MaintenanceOpStats* stats, double elapsed_ms); |
| |
| private: |
| FlushOpPerfImprovementPolicy() {} |
| }; |
| |
| class TabletReplicaOpBase : public MaintenanceOp { |
| public: |
| explicit TabletReplicaOpBase(std::string name, IOUsage io_usage, TabletReplica* tablet_replica); |
| |
| protected: |
| int32_t priority() const override; |
| |
| TabletReplica *const tablet_replica_; |
| }; |
| |
| // Maintenance op for MRS flush. Only one can happen at a time. |
| class FlushMRSOp : public TabletReplicaOpBase { |
| public: |
| explicit FlushMRSOp(TabletReplica* tablet_replica) |
| : TabletReplicaOpBase(StringPrintf("FlushMRSOp(%s)", |
| tablet_replica->tablet()->tablet_id().c_str()), |
| MaintenanceOp::HIGH_IO_USAGE, |
| tablet_replica) { |
| time_since_flush_.start(); |
| } |
| |
| void UpdateStats(MaintenanceOpStats* stats) override; |
| |
| bool Prepare() override; |
| |
| void Perform() override; |
| |
| scoped_refptr<Histogram> DurationHistogram() const override; |
| |
| scoped_refptr<AtomicGauge<uint32_t> > RunningGauge() const override; |
| |
| private: |
| // Lock protecting time_since_flush_. |
| mutable simple_spinlock lock_; |
| Stopwatch time_since_flush_; |
| }; |
| |
| // Maintenance op for DMS flush. |
| // Reports stats for all the DMS this tablet contains but only flushes one in Perform(). |
| class FlushDeltaMemStoresOp : public TabletReplicaOpBase { |
| public: |
| explicit FlushDeltaMemStoresOp(TabletReplica* tablet_replica) |
| : TabletReplicaOpBase(StringPrintf("FlushDeltaMemStoresOp(%s)", |
| tablet_replica->tablet()->tablet_id().c_str()), |
| MaintenanceOp::HIGH_IO_USAGE, |
| tablet_replica) {} |
| |
| void UpdateStats(MaintenanceOpStats* stats) override; |
| |
| bool Prepare() override { |
| return true; |
| } |
| |
| void Perform() override; |
| |
| scoped_refptr<Histogram> DurationHistogram() const override; |
| |
| scoped_refptr<AtomicGauge<uint32_t> > RunningGauge() const override; |
| }; |
| |
| // Maintenance task that runs log GC. Reports log retention that represents the amount of data |
| // that can be GC'd. |
| // |
| // Only one LogGC op can run at a time. |
| class LogGCOp : public TabletReplicaOpBase { |
| public: |
| explicit LogGCOp(TabletReplica* tablet_replica); |
| |
| void UpdateStats(MaintenanceOpStats* stats) override; |
| |
| bool Prepare() override; |
| |
| void Perform() override; |
| |
| scoped_refptr<Histogram> DurationHistogram() const override; |
| |
| scoped_refptr<AtomicGauge<uint32_t> > RunningGauge() const override; |
| |
| private: |
| scoped_refptr<Histogram> log_gc_duration_; |
| scoped_refptr<AtomicGauge<uint32_t> > log_gc_running_; |
| mutable Semaphore sem_; |
| }; |
| |
| } // namespace tablet |
| } // namespace kudu |
| |
| #endif /* KUDU_TABLET_TABLET_REPLICA_MM_OPS_H_ */ |