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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "multienumattribute.h"
#include "multienumattributesaver.h"
#include "load_utils.h"
#include "enum_store_loaders.h"
#include "ipostinglistattributebase.h"
#include "valuemodifier.h"
#include <vespa/searchcommon/attribute/config.h>
#include <vespa/vespalib/stllike/hashtable.hpp>
#include <vespa/vespalib/datastore/unique_store_remapper.h>
namespace search {
namespace multienumattribute {
template <typename WeightedIndex>
void
remap_enum_store_refs(const IEnumStore::EnumIndexRemapper& remapper, AttributeVector& v, attribute::MultiValueMapping<WeightedIndex>& multi_value_mapping);
}
template <typename B, typename M>
bool
MultiValueEnumAttribute<B, M>::extractChangeData(const Change & c, EnumIndex & idx)
{
if ( ! c.has_entry_ref() ) {
return this->_enumStore.find_index(c._data.raw(), idx);
}
idx = EnumIndex(vespalib::datastore::EntryRef(c.get_entry_ref()));
return true;
}
template <typename B, typename M>
void
MultiValueEnumAttribute<B, M>::considerAttributeChange(const Change & c, EnumStoreBatchUpdater & inserter)
{
if (c._type == ChangeBase::APPEND ||
(this->getInternalCollectionType().createIfNonExistant() &&
(c._type >= ChangeBase::INCREASEWEIGHT && c._type <= ChangeBase::SETWEIGHT)))
{
EnumIndex idx;
if (!this->_enumStore.find_index(c._data.raw(), idx)) {
c.set_entry_ref(inserter.insert(c._data.raw()).ref());
} else {
c.set_entry_ref(idx.ref());
}
}
}
template <typename B, typename M>
void
MultiValueEnumAttribute<B, M>::applyValueChanges(const DocIndices& docIndices, EnumStoreBatchUpdater& updater)
{
// set new set of indices for documents with changes
ValueModifier valueGuard(this->getValueModifier());
for (const auto& doc_values : docIndices) {
vespalib::ConstArrayRef<WeightedIndex> oldIndices(this->_mvMapping.get(doc_values.first));
uint32_t valueCount = oldIndices.size();
this->_mvMapping.set(doc_values.first, doc_values.second);
for (uint32_t i = 0; i < doc_values.second.size(); ++i) {
updater.inc_ref_count(multivalue::get_value_ref(doc_values.second[i]).load_relaxed());
}
for (uint32_t i = 0; i < valueCount; ++i) {
updater.dec_ref_count(multivalue::get_value_ref(oldIndices[i]).load_relaxed());
}
}
}
template <typename B, typename M>
void
MultiValueEnumAttribute<B, M>::fillValues(LoadedVector & loaded)
{
if constexpr(!std::is_same_v<LoadedVector, NoLoadedVector>) {
uint32_t numDocs(this->getNumDocs());
size_t numValues = loaded.size();
size_t count = 0;
WeightedIndexVector indices;
this->_mvMapping.prepareLoadFromMultiValue();
for (DocId doc = 0; doc < numDocs; ++doc) {
for(const auto* v = & loaded.read();(count < numValues) && (v->_docId == doc); count++, loaded.next(), v = & loaded.read()) {
indices.push_back(multivalue::ValueBuilder<WeightedIndex>::build(AtomicEntryRef(v->getEidx()), v->getWeight()));
}
this->checkSetMaxValueCount(indices.size());
this->_mvMapping.set(doc, indices);
indices.clear();
}
this->_mvMapping.doneLoadFromMultiValue();
}
}
template <typename B, typename M>
void
MultiValueEnumAttribute<B, M>::load_enumerated_data(ReaderBase& attrReader,
enumstore::EnumeratedPostingsLoader& loader,
size_t num_values)
{
loader.reserve_loaded_enums(num_values);
uint32_t maxvc = attribute::loadFromEnumeratedMultiValue(this->_mvMapping, attrReader,
vespalib::ConstArrayRef<EnumIndex>(loader.get_enum_indexes()),
loader.get_enum_value_remapping(),
attribute::SaveLoadedEnum(loader.get_loaded_enums()));
loader.free_enum_value_remapping();
loader.sort_loaded_enums();
this->checkSetMaxValueCount(maxvc);
}
template <typename B, typename M>
void
MultiValueEnumAttribute<B, M>::load_enumerated_data(ReaderBase& attrReader,
enumstore::EnumeratedLoader& loader)
{
loader.allocate_enums_histogram();
uint32_t maxvc = attribute::loadFromEnumeratedMultiValue(this->_mvMapping, attrReader,
vespalib::ConstArrayRef<EnumIndex>(loader.get_enum_indexes()),
loader.get_enum_value_remapping(),
attribute::SaveEnumHist(loader.get_enums_histogram()));
loader.free_enum_value_remapping();
loader.set_ref_counts();
loader.build_dictionary();
loader.free_unused_values();
this->checkSetMaxValueCount(maxvc);
}
template <typename B, typename M>
MultiValueEnumAttribute<B, M>::
MultiValueEnumAttribute(const vespalib::string &baseFileName,
const AttributeVector::Config & cfg)
: MultiValueAttribute<B, M>(baseFileName, cfg)
{
}
template <typename B, typename M>
void
MultiValueEnumAttribute<B, M>::onCommit()
{
// update enum store
auto updater = this->_enumStore.make_batch_updater();
this->insertNewUniqueValues(updater);
DocIndices docIndices;
this->applyAttributeChanges(docIndices);
applyValueChanges(docIndices, updater);
this->_changes.clear();
updater.commit();
this->freezeEnumDictionary();
std::atomic_thread_fence(std::memory_order_release);
this->reclaim_unused_memory();
if (this->_mvMapping.consider_compact(this->getConfig().getCompactionStrategy())) {
this->incGeneration();
this->updateStat(true);
}
auto remapper = this->_enumStore.consider_compact_values(this->getConfig().getCompactionStrategy());
if (remapper) {
multienumattribute::remap_enum_store_refs(*remapper, *this, this->_mvMapping);
remapper->done();
remapper.reset();
this->incGeneration();
this->updateStat(true);
}
if (this->_enumStore.consider_compact_dictionary(this->getConfig().getCompactionStrategy())) {
this->incGeneration();
this->updateStat(true);
}
auto *pab = this->getIPostingListAttributeBase();
if (pab != nullptr) {
if (pab->consider_compact_worst_btree_nodes(this->getConfig().getCompactionStrategy())) {
this->incGeneration();
this->updateStat(true);
}
if (pab->consider_compact_worst_buffers(this->getConfig().getCompactionStrategy())) {
this->incGeneration();
this->updateStat(true);
}
}
}
template <typename B, typename M>
void
MultiValueEnumAttribute<B, M>::onUpdateStat()
{
// update statistics
vespalib::MemoryUsage total;
auto& compaction_strategy = this->getConfig().getCompactionStrategy();
total.merge(this->_enumStore.update_stat(compaction_strategy));
total.merge(this->_mvMapping.update_stat(compaction_strategy));
total.merge(this->getChangeVectorMemoryUsage());
mergeMemoryStats(total);
this->updateStatistics(this->_mvMapping.getTotalValueCnt(), this->_enumStore.get_num_uniques(), total.allocatedBytes(),
total.usedBytes(), total.deadBytes(), total.allocatedBytesOnHold());
}
template <typename B, typename M>
void
MultiValueEnumAttribute<B, M>::reclaim_memory(generation_t oldest_used_gen)
{
this->_enumStore.reclaim_memory(oldest_used_gen);
this->_mvMapping.reclaim_memory(oldest_used_gen);
}
template <typename B, typename M>
void
MultiValueEnumAttribute<B, M>::before_inc_generation(generation_t current_gen)
{
/*
* Freeze tree before generation is increased in attribute vector
* but after generation is increased in tree. This ensures that
* unlocked readers accessing a frozen tree will access a
* sufficiently new frozen tree.
*/
freezeEnumDictionary();
this->_mvMapping.assign_generation(current_gen);
this->_enumStore.assign_generation(current_gen);
}
template <typename B, typename M>
std::unique_ptr<AttributeSaver>
MultiValueEnumAttribute<B, M>::onInitSave(vespalib::stringref fileName)
{
auto guard = this->getGenerationHandler().takeGuard();
return std::make_unique<MultiValueEnumAttributeSaver<WeightedIndex>>
(std::move(guard), this->createAttributeHeader(fileName), this->_mvMapping, this->_enumStore);
}
} // namespace search
|
