1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
#include <Processors/Transforms/TTLTransform.h>
#include <DataTypes/DataTypeDate.h>
#include <Interpreters/inplaceBlockConversions.h>
#include <Interpreters/TreeRewriter.h>
#include <Interpreters/ExpressionAnalyzer.h>
#include <Columns/ColumnConst.h>
#include <Interpreters/addTypeConversionToAST.h>
#include <Storages/TTLMode.h>
#include <Interpreters/Context.h>
#include <Processors/TTL/TTLDeleteAlgorithm.h>
#include <Processors/TTL/TTLColumnAlgorithm.h>
#include <Processors/TTL/TTLAggregationAlgorithm.h>
#include <Processors/TTL/TTLUpdateInfoAlgorithm.h>
namespace DB
{
TTLTransform::TTLTransform(
const Block & header_,
const MergeTreeData & storage_,
const StorageMetadataPtr & metadata_snapshot_,
const MergeTreeData::MutableDataPartPtr & data_part_,
time_t current_time_,
bool force_)
: IAccumulatingTransform(header_, header_)
, data_part(data_part_)
, log(&Poco::Logger::get(storage_.getLogName() + " (TTLTransform)"))
{
auto old_ttl_infos = data_part->ttl_infos;
if (metadata_snapshot_->hasRowsTTL())
{
const auto & rows_ttl = metadata_snapshot_->getRowsTTL();
auto algorithm = std::make_unique<TTLDeleteAlgorithm>(
rows_ttl, old_ttl_infos.table_ttl, current_time_, force_);
/// Skip all data if table ttl is expired for part
if (algorithm->isMaxTTLExpired() && !rows_ttl.where_expression)
all_data_dropped = true;
delete_algorithm = algorithm.get();
algorithms.emplace_back(std::move(algorithm));
}
for (const auto & where_ttl : metadata_snapshot_->getRowsWhereTTLs())
algorithms.emplace_back(std::make_unique<TTLDeleteAlgorithm>(
where_ttl, old_ttl_infos.rows_where_ttl[where_ttl.result_column], current_time_, force_));
for (const auto & group_by_ttl : metadata_snapshot_->getGroupByTTLs())
algorithms.emplace_back(std::make_unique<TTLAggregationAlgorithm>(
group_by_ttl, old_ttl_infos.group_by_ttl[group_by_ttl.result_column], current_time_, force_, getInputPort().getHeader(), storage_));
if (metadata_snapshot_->hasAnyColumnTTL())
{
const auto & storage_columns = metadata_snapshot_->getColumns();
const auto & column_defaults = storage_columns.getDefaults();
for (const auto & [name, description] : metadata_snapshot_->getColumnTTLs())
{
ExpressionActionsPtr default_expression;
String default_column_name;
auto it = column_defaults.find(name);
if (it != column_defaults.end())
{
const auto & column = storage_columns.get(name);
auto default_ast = it->second.expression->clone();
default_ast = addTypeConversionToAST(std::move(default_ast), column.type->getName());
auto syntax_result
= TreeRewriter(storage_.getContext()).analyze(default_ast, metadata_snapshot_->getColumns().getAllPhysical());
default_expression = ExpressionAnalyzer{default_ast, syntax_result, storage_.getContext()}.getActions(true);
default_column_name = default_ast->getColumnName();
}
algorithms.emplace_back(std::make_unique<TTLColumnAlgorithm>(
description, old_ttl_infos.columns_ttl[name], current_time_,
force_, name, default_expression, default_column_name, isCompactPart(data_part)));
}
}
for (const auto & move_ttl : metadata_snapshot_->getMoveTTLs())
algorithms.emplace_back(std::make_unique<TTLUpdateInfoAlgorithm>(
move_ttl, TTLUpdateField::MOVES_TTL, move_ttl.result_column, old_ttl_infos.moves_ttl[move_ttl.result_column], current_time_, force_));
for (const auto & recompression_ttl : metadata_snapshot_->getRecompressionTTLs())
algorithms.emplace_back(std::make_unique<TTLUpdateInfoAlgorithm>(
recompression_ttl, TTLUpdateField::RECOMPRESSION_TTL, recompression_ttl.result_column, old_ttl_infos.recompression_ttl[recompression_ttl.result_column], current_time_, force_));
}
Block reorderColumns(Block block, const Block & header)
{
Block res;
for (const auto & col : header)
res.insert(block.getByName(col.name));
return res;
}
void TTLTransform::consume(Chunk chunk)
{
if (all_data_dropped)
{
finishConsume();
return;
}
convertToFullIfSparse(chunk);
auto block = getInputPort().getHeader().cloneWithColumns(chunk.detachColumns());
for (const auto & algorithm : algorithms)
algorithm->execute(block);
if (!block)
return;
size_t num_rows = block.rows();
setReadyChunk(Chunk(reorderColumns(std::move(block), getOutputPort().getHeader()).getColumns(), num_rows));
}
Chunk TTLTransform::generate()
{
Block block;
for (const auto & algorithm : algorithms)
algorithm->execute(block);
if (!block)
return {};
size_t num_rows = block.rows();
return Chunk(reorderColumns(std::move(block), getOutputPort().getHeader()).getColumns(), num_rows);
}
void TTLTransform::finalize()
{
data_part->ttl_infos = {};
for (const auto & algorithm : algorithms)
algorithm->finalize(data_part);
if (delete_algorithm)
{
if (all_data_dropped)
LOG_DEBUG(log, "Removed all rows from part {} due to expired TTL", data_part->name);
else
LOG_DEBUG(log, "Removed {} rows with expired TTL from part {}", delete_algorithm->getNumberOfRemovedRows(), data_part->name);
}
else
LOG_DEBUG(log, "No delete algorithm was applied for part {}", data_part->name);
}
IProcessor::Status TTLTransform::prepare()
{
auto status = IAccumulatingTransform::prepare();
if (status == Status::Finished)
finalize();
return status;
}
}
|
