Files
doris/be/test/runtime/cache/partition_cache_test.cpp
HaiBo Li 5f43fb3bde [Cache][BE] LRU cache for sql/partition cache #2581 (#4005)
1. Find the cache node by SQL Key, then find the corresponding partition data by Partition Key, and then decide whether to hit Cache by LastVersion and LastVersionTime
2. Refers to the classic cache algorithm LRU, which is the least recently used algorithm, using a three-layer data structure to achieve
3. The Cache elimination algorithm is implemented by ensuring the range of the partition as much as possible, to avoid the situation of partition discontinuity, which will reduce the hit rate of the Cache partition,
4. Use the two thresholds of maximum memory and elastic memory to control to avoid frequent elimination of data
2020-09-20 20:50:51 +08:00

261 lines
8.2 KiB
C++

// Licensed to the Apache Software Foundation (ASF) under one
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// 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.
#include <gtest/gtest.h>
#include <boost/shared_ptr.hpp>
#include "util/logging.h"
#include "util/cpu_info.h"
#include "gen_cpp/internal_service.pb.h"
#include "gen_cpp/PaloInternalService_types.h"
#include "runtime/cache/result_cache.h"
#include "runtime/buffer_control_block.h"
namespace doris {
class PartitionCacheTest : public testing::Test {
public:
PartitionCacheTest() {
}
virtual ~PartitionCacheTest() {
// clear();
}
protected:
virtual void SetUp() {
}
private:
void init_default(){
LOG(WARNING) << "init test default\n";
init(16,4);
}
void init(int max_size, int ela_size);
void clear();
PCacheStatus init_batch_data(int sql_num, int part_begin, int part_num);
ResultCache* _cache;
PUpdateCacheRequest* _update_request;
PCacheResponse* _update_response;
PFetchCacheRequest* _fetch_request;
PFetchCacheResult* _fetch_result;
PClearCacheRequest* _clear_request;
PCacheResponse* _clear_response;
};
void PartitionCacheTest::init(int max_size, int ela_size){
LOG(WARNING) << "init test\n";
_cache = new ResultCache(max_size, ela_size);
_update_request = new PUpdateCacheRequest();
_update_response = new PCacheResponse();
_fetch_request = new PFetchCacheRequest();
_fetch_result = new PFetchCacheResult();
_clear_request = new PClearCacheRequest();
_clear_response = new PCacheResponse();
}
void PartitionCacheTest::clear(){
_clear_request->set_clear_type(PClearType::CLEAR_ALL);
_cache->clear(_clear_request, _clear_response);
SAFE_DELETE(_cache);
SAFE_DELETE(_update_request);
SAFE_DELETE(_update_response);
SAFE_DELETE(_fetch_request);
SAFE_DELETE(_fetch_result);
SAFE_DELETE(_clear_request);
SAFE_DELETE(_clear_response);
}
void set_sql_key(PUniqueId* sql_key, int64 hi, int64 lo){
sql_key->set_hi(hi);
sql_key->set_lo(lo);
}
PCacheStatus PartitionCacheTest::init_batch_data(int sql_num, int part_begin, int part_num) {
LOG(WARNING) << "init data, sql_num:" << sql_num << ",part_num:" << part_num;
PUpdateCacheRequest* up_req = NULL;
PCacheResponse* up_res = NULL;
PCacheStatus st = PCacheStatus::DEFAULT;
for (int i = 1; i < sql_num + 1; i++) {
LOG(WARNING) << "Sql:" << i;
up_req = new PUpdateCacheRequest();
up_res = new PCacheResponse();
set_sql_key(up_req->mutable_sql_key(), i, i);
//partition
for (int j = part_begin; j < part_begin + part_num; j++) {
PCacheValue* value = up_req->add_values();
value->mutable_param()->set_partition_key(j);
value->mutable_param()->set_last_version(j);
value->mutable_param()->set_last_version_time(j);
value->set_data_size(16);
value->add_rows("0123456789abcdef"); //16 byte
}
_cache->update(up_req, up_res);
LOG(WARNING) << "finish update data";
st = up_res->status();
SAFE_DELETE(up_req);
SAFE_DELETE(up_res);
}
return st;
}
TEST_F(PartitionCacheTest, update_data) {
init_default();
PCacheStatus st = init_batch_data(1, 1, 1);
ASSERT_TRUE(st == PCacheStatus::CACHE_OK);
LOG(WARNING) << "clear cache";
clear();
}
TEST_F(PartitionCacheTest, update_over_partition) {
init_default();
PCacheStatus st = init_batch_data(1, 1, config::query_cache_max_partition_count+1);
ASSERT_TRUE(st == PCacheStatus::PARAM_ERROR);
clear();
}
TEST_F(PartitionCacheTest, cache_clear) {
init_default();
init_batch_data(1, 1, 1);
_cache->clear(_clear_request, _clear_response);
ASSERT_EQ(_cache->get_cache_size(),0);
clear();
}
TEST_F(PartitionCacheTest, fetch_simple_data) {
init_default();
init_batch_data(1, 1, 1);
LOG(WARNING) << "finish init\n";
set_sql_key(_fetch_request->mutable_sql_key(), 1, 1);
PCacheParam* p1 = _fetch_request->add_params();
p1->set_partition_key(1);
p1->set_last_version(1);
p1->set_last_version_time(1);
LOG(WARNING) << "begin fetch\n";
_cache->fetch(_fetch_request, _fetch_result);
LOG(WARNING) << "finish fetch1\n";
ASSERT_TRUE(_fetch_result->status() == PCacheStatus::CACHE_OK);
ASSERT_EQ(_fetch_result->values_size(), 1);
ASSERT_EQ(_fetch_result->values(0).rows(0), "0123456789abcdef");
LOG(WARNING) << "finish fetch2\n";
clear();
LOG(WARNING) << "finish fetch3\n";
}
TEST_F(PartitionCacheTest, fetch_not_sqlid) {
init_default();
init_batch_data(1, 1, 1);
set_sql_key(_fetch_request->mutable_sql_key(), 2, 2);
PCacheParam* p1 = _fetch_request->add_params();
p1->set_partition_key(1);
p1->set_last_version(1);
p1->set_last_version_time(1);
_cache->fetch(_fetch_request, _fetch_result);
ASSERT_TRUE(_fetch_result->status() == PCacheStatus::NO_SQL_KEY);
clear();
}
TEST_F(PartitionCacheTest, fetch_range_data) {
init_default();
init_batch_data(1, 1, 3);
set_sql_key(_fetch_request->mutable_sql_key(), 1, 1);
PCacheParam* p1 = _fetch_request->add_params();
p1->set_partition_key(2);
p1->set_last_version(2);
p1->set_last_version_time(2);
PCacheParam* p2 = _fetch_request->add_params();
p2->set_partition_key(3);
p2->set_last_version(3);
p2->set_last_version_time(3);
_cache->fetch(_fetch_request, _fetch_result);
ASSERT_TRUE(_fetch_result->status() == PCacheStatus::CACHE_OK);
ASSERT_EQ(_fetch_result->values_size(), 2);
clear();
}
TEST_F(PartitionCacheTest, fetch_invalid_key_range) {
init_default();
init_batch_data(1, 2, 1);
set_sql_key(_fetch_request->mutable_sql_key(), 1, 1);
PCacheParam* p1 = _fetch_request->add_params();
p1->set_partition_key(1);
p1->set_last_version(1);
p1->set_last_version_time(1);
PCacheParam* p2 = _fetch_request->add_params();
p2->set_partition_key(2);
p2->set_last_version(2);
p2->set_last_version_time(2);
PCacheParam* p3 = _fetch_request->add_params();
p3->set_partition_key(3);
p3->set_last_version(3);
p3->set_last_version_time(3);
_cache->fetch(_fetch_request, _fetch_result);
ASSERT_TRUE(_fetch_result->status() == PCacheStatus::INVALID_KEY_RANGE);
ASSERT_EQ(_fetch_result->values_size(), 0);
clear();
}
TEST_F(PartitionCacheTest, fetch_data_overdue) {
init_default();
init_batch_data(1, 1, 1);
set_sql_key(_fetch_request->mutable_sql_key(), 1, 1);
PCacheParam* p1 = _fetch_request->add_params();
p1->set_partition_key(1);
//cache version is 1, request version is 2
p1->set_last_version(2);
p1->set_last_version_time(2);
_cache->fetch(_fetch_request, _fetch_result);
LOG(WARNING) << "fetch_data_overdue:" << _fetch_result->status();
ASSERT_TRUE(_fetch_result->status() == PCacheStatus::DATA_OVERDUE);
ASSERT_EQ(_fetch_result->values_size(), 0);
clear();
}
TEST_F(PartitionCacheTest, prune_data) {
init(1,1);
init_batch_data(129, 1, 1024); // 16*1024*128=2M
ASSERT_LE(_cache->get_cache_size(), 1*1024*1024); //cache_size <= 1M
clear();
}
}
int main(int argc, char** argv) {
std::string conffile = std::string(getenv("DORIS_HOME")) + "/conf/be.conf";
if (!doris::config::init(conffile.c_str(), false)) {
fprintf(stderr, "error read config file. \n");
return -1;
}
doris::init_glog("be-test");
::testing::InitGoogleTest(&argc, argv);
doris::CpuInfo::init();
return RUN_ALL_TESTS();
}
/* vim: set ts=4 sw=4 sts=4 tw=100 */