mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-10 01:25:21 +00:00
55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
#pragma once
|
|
|
|
#include "ShardPartitionPiece.h"
|
|
|
|
#include <base/types.h>
|
|
|
|
#include <map>
|
|
|
|
namespace DB
|
|
{
|
|
|
|
struct TaskShard;
|
|
|
|
/// Just destination partition of a shard
|
|
/// I don't know what this comment means.
|
|
/// In short, when we discovered what shards contain currently processing partition,
|
|
/// This class describes a partition (name) that is stored on the shard (parent).
|
|
struct ShardPartition
|
|
{
|
|
ShardPartition(TaskShard &parent, String name_quoted_, size_t number_of_splits = 10);
|
|
|
|
String getPartitionPath() const;
|
|
|
|
String getPartitionPiecePath(size_t current_piece_number) const;
|
|
|
|
String getPartitionCleanStartPath() const;
|
|
|
|
String getPartitionPieceCleanStartPath(size_t current_piece_number) const;
|
|
|
|
String getCommonPartitionIsDirtyPath() const;
|
|
|
|
String getCommonPartitionIsCleanedPath() const;
|
|
|
|
String getPartitionActiveWorkersPath() const;
|
|
|
|
String getActiveWorkerPath() const;
|
|
|
|
String getPartitionShardsPath() const;
|
|
|
|
String getShardStatusPath() const;
|
|
|
|
/// What partition pieces are present in current shard.
|
|
/// FYI: Piece is a part of partition which has modulo equals to concrete constant (less than number_of_splits obliously)
|
|
/// For example SELECT ... from ... WHERE partition=current_partition AND cityHash64(*) == const;
|
|
/// Absent pieces have field is_absent_piece equals to true.
|
|
PartitionPieces pieces;
|
|
|
|
TaskShard & task_shard;
|
|
String name;
|
|
};
|
|
|
|
using TasksPartition = std::map<String, ShardPartition, std::greater<>>;
|
|
|
|
}
|