mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-18 21:51:57 +00:00
93 lines
3.1 KiB
C++
93 lines
3.1 KiB
C++
#pragma once
|
|
|
|
#include "Internals.h"
|
|
#include "TaskTable.h"
|
|
|
|
namespace DB {
|
|
|
|
|
|
/// 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)
|
|
: task_shard(parent), name(std::move(name_quoted_)) { pieces.reserve(number_of_splits); }
|
|
|
|
/*useful*/ String getPartitionPath() const;
|
|
|
|
[[maybe_unused]] String getPartitionPiecePath(size_t current_piece_number) const;
|
|
|
|
/*useful*/ String getPartitionCleanStartPath() const;
|
|
|
|
[[maybe_unused]] String getPartitionPieceCleanStartPath(size_t current_piece_number) const;
|
|
|
|
/*useful*/ String getCommonPartitionIsDirtyPath() const;
|
|
|
|
/*useful*/ String getCommonPartitionIsCleanedPath() const;
|
|
|
|
/*??????*/ String getPartitionActiveWorkersPath() const;
|
|
|
|
/*??????*/ String getActiveWorkerPath() const;
|
|
|
|
/*useful*/ String getPartitionShardsPath() const;
|
|
|
|
/*useful*/ 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;
|
|
};
|
|
|
|
String ShardPartition::getPartitionCleanStartPath() const {
|
|
return getPartitionPath() + "/clean_start";
|
|
}
|
|
|
|
String ShardPartition::getPartitionPieceCleanStartPath(size_t current_piece_number) const {
|
|
assert(current_piece_number < task_shard.task_table.number_of_splits);
|
|
return getPartitionPiecePath(current_piece_number) + "/clean_start";
|
|
}
|
|
|
|
String ShardPartition::getPartitionPath() const {
|
|
return task_shard.task_table.getPartitionPath(name);
|
|
}
|
|
|
|
String ShardPartition::getPartitionPiecePath(size_t current_piece_number) const {
|
|
assert(current_piece_number < task_shard.task_table.number_of_splits);
|
|
return task_shard.task_table.getPartitionPiecePath(name, current_piece_number);
|
|
}
|
|
|
|
String ShardPartition::getShardStatusPath() const {
|
|
// schema: /<root...>/tables/<table>/<partition>/shards/<shard>
|
|
// e.g. /root/table_test.hits/201701/shards/1
|
|
return getPartitionShardsPath() + "/" + toString(task_shard.numberInCluster());
|
|
}
|
|
|
|
String ShardPartition::getPartitionShardsPath() const {
|
|
return getPartitionPath() + "/shards";
|
|
}
|
|
|
|
String ShardPartition::getPartitionActiveWorkersPath() const {
|
|
return getPartitionPath() + "/partition_active_workers";
|
|
}
|
|
|
|
String ShardPartition::getActiveWorkerPath() const {
|
|
return getPartitionActiveWorkersPath() + "/" + toString(task_shard.numberInCluster());
|
|
}
|
|
|
|
String ShardPartition::getCommonPartitionIsDirtyPath() const {
|
|
return getPartitionPath() + "/is_dirty";
|
|
}
|
|
|
|
String ShardPartition::getCommonPartitionIsCleanedPath() const {
|
|
return getCommonPartitionIsDirtyPath() + "/cleaned";
|
|
}
|
|
|
|
|
|
}
|