98 lines
3.5 KiB
C++
98 lines
3.5 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#define USING_LOG_PREFIX SQL_EXE
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#include "sql/executor/ob_job.h"
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#include "sql/executor/ob_task_info.h"
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#include "sql/executor/ob_task_executor.h"
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#include "sql/executor/ob_task_spliter.h"
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#include "sql/executor/ob_receive.h"
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#include "sql/engine/ob_phy_operator.h"
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#include "sql/engine/ob_exec_context.h"
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#include "sql/engine/table/ob_table_scan.h"
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#include "lib/utility/ob_tracepoint.h"
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using namespace oceanbase::common;
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using namespace oceanbase::sql;
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ObTaskExecutor::ObTaskExecutor()
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{}
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ObTaskExecutor::~ObTaskExecutor()
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{}
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int ObTaskExecutor::execute(ObExecContext& query_ctx, ObJob* job, ObTaskInfo* task_info)
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{
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UNUSED(query_ctx);
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UNUSED(job);
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UNUSED(task_info);
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return OB_NOT_IMPLEMENT;
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}
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// Recursively construct the Input of each Opeator belonging to this task
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// Note: There can be multiple tasks of the same structure under a job,
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// but their parameters are different (task_info)
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// For each task, you need to call build_task_op_input
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int ObTaskExecutor::build_task_op_input(ObExecContext& query_ctx, ObTaskInfo& task_info, const ObPhyOperator& root_op)
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{
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int ret = OB_SUCCESS;
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const ObPhyOperator* child_op = NULL;
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ObIPhyOperatorInput* op_input = GET_PHY_OP_INPUT(ObIPhyOperatorInput, query_ctx, root_op.get_id());
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// Some ops have no input and continue to recurse when NULL == op_input
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if (NULL != op_input) {
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op_input->reset();
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OZ(op_input->init(query_ctx, task_info, root_op));
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}
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if (OB_SUCC(ret)) {
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if (!IS_RECEIVE(root_op.get_type())) {
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for (int32_t i = 0; OB_SUCC(ret) && i < root_op.get_child_num(); ++i) {
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if (OB_ISNULL(child_op = root_op.get_child(i))) {
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ret = OB_ERR_UNEXPECTED;
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} else if (OB_FAIL(OB_I(t2) build_task_op_input(query_ctx, task_info, *child_op))) {
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LOG_WARN("fail to build child op input", K(ret), K(i), K(child_op->get_id()));
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}
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}
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} else {
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// Encounter ObReceive, stop recursion
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}
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}
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return ret;
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}
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int ObTaskExecutor::should_skip_failed_tasks(ObTaskInfo& task_info, bool& skip_failed_tasks) const
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{
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int ret = OB_SUCCESS;
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// when the task only involves virtual tables, the failed tasks are skipped
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skip_failed_tasks = false;
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ObPhyOperator* root_op = NULL;
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ObSEArray<const ObTableScan*, 1> scan_ops;
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if (OB_ISNULL(root_op = task_info.get_root_op())) {
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ret = OB_ERR_UNEXPECTED;
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LOG_ERROR("root op is NULL", K(ret), K(task_info));
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} else if (OB_FAIL(ObTaskSpliter::find_scan_ops(scan_ops, *root_op))) {
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LOG_WARN("fail to find scan ops", K(ret), K(*root_op), K(task_info));
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} else if (scan_ops.count() > 0) {
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skip_failed_tasks = true;
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for (int64_t i = 0; OB_SUCC(ret) && true == skip_failed_tasks && i < scan_ops.count(); ++i) {
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const ObTableScan* scan_op = scan_ops.at(i);
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if (OB_ISNULL(scan_op)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_ERROR("scan op is NULL", K(ret), K(i), K(*root_op), K(task_info));
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} else if (!is_virtual_table(scan_op->get_ref_table_id())) {
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skip_failed_tasks = false;
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}
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}
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}
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return ret;
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}
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