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57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
#pragma once
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#include "Aliases.h"
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#include "Internals.h"
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#include "ClusterPartition.h"
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#include "ShardPartition.h"
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namespace DB
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{
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struct TaskTable;
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struct TaskShard
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{
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TaskShard(TaskTable & parent, const Cluster::ShardInfo & info_);
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TaskTable & task_table;
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Cluster::ShardInfo info;
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UInt32 numberInCluster() const;
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UInt32 indexInCluster() const;
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String getDescription() const;
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String getHostNameExample() const;
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/// Used to sort clusters by their proximity
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ShardPriority priority;
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/// Column with unique destination partitions (computed from engine_push_partition_key expr.) in the shard
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ColumnWithTypeAndName partition_key_column;
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/// There is a task for each destination partition
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TasksPartition partition_tasks;
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/// Which partitions have been checked for existence
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/// If some partition from this lists is exists, it is in partition_tasks
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std::set<String> checked_partitions;
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/// Last CREATE TABLE query of the table of the shard
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ASTPtr current_pull_table_create_query;
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ASTPtr current_push_table_create_query;
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/// Internal distributed tables
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DatabaseAndTableName table_read_shard;
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DatabaseAndTableName main_table_split_shard;
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ListOfDatabasesAndTableNames list_of_split_tables_on_shard;
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};
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using TaskShardPtr = std::shared_ptr<TaskShard>;
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using TasksShard = std::vector<TaskShardPtr>;
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}
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