weizuo93 commented on a change in pull request #5101: URL: https://github.com/apache/incubator-doris/pull/5101#discussion_r556479632
########## File path: be/src/http/action/tablet_migration_action.cpp ########## @@ -0,0 +1,258 @@ +// 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. + +#include "http/action/tablet_migration_action.h" + +#include <string> + +#include "gutil/strings/substitute.h" +#include "http/http_channel.h" +#include "http/http_headers.h" +#include "http/http_request.h" +#include "http/http_status.h" +#include "olap/storage_engine.h" +#include "olap/tablet_manager.h" +#include "olap/task/engine_storage_migration_task.h" +#include "util/json_util.h" + +namespace doris { + +const static std::string HEADER_JSON = "application/json"; + +TabletMigrationAction::TabletMigrationAction() { + _init_migration_action(); +} + +void TabletMigrationAction::_init_migration_action() { + int32_t max_thread_num = config::max_tablet_migration_threads; + int32_t min_thread_num = config::min_tablet_migration_threads; + ThreadPoolBuilder("MigrationTaskThreadPool") + .set_min_threads(min_thread_num) + .set_max_threads(max_thread_num) + .build(&_migration_thread_pool); +} + +void TabletMigrationAction::handle(HttpRequest* req) { + int64_t tablet_id = 0; + int32_t schema_hash = 0; + string dest_disk = ""; + string goal = ""; + Status status = _check_param(req, tablet_id, schema_hash, dest_disk, goal); + if (status.ok()) { + if (goal == "run") { + MigrationTask current_task(tablet_id, schema_hash, dest_disk); + TabletSharedPtr tablet; + DataDir* dest_store; + Status status = + _check_migrate_request(tablet_id, schema_hash, dest_disk, tablet, &dest_store); + if (status.ok()) { + do { + { + std::unique_lock<std::mutex> lock(_migration_status_mutex); + std::map<MigrationTask, std::string>::iterator it_task = + _migration_tasks.begin(); + for (; it_task != _migration_tasks.end(); it_task++) { + if (tablet_id == (it_task->first)._tablet_id && + schema_hash == (it_task->first)._schema_hash) { + status = Status::AlreadyExist(strings::Substitute( + "There is a migration task for this tablet already exists. " + "dest_disk is $0 .", + (it_task->first)._dest_disk)); + break; + } + } + if (it_task != _migration_tasks.end()) { + break; + } + } + { + std::unique_lock<std::mutex> lock(_migration_status_mutex); Review comment: > And the `"submitted"` status seems not necessary? It will be changed to "running" very soon. And it it submit failed, it will be removed from _migration_tasks. When doing tablet rebalance between disks, there may be many migration tasks being submitted and waiting in the queue. So `"submitted"` status may be useful. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For additional commands, e-mail: commits-h...@doris.apache.org
