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
|
// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "distributor_bucket_space.h"
#include "bucketownership.h"
#include <vespa/storage/bucketdb/btree_bucket_database.h>
#include <vespa/vdslib/state/clusterstate.h>
#include <vespa/vdslib/distribution/distribution.h>
#include <vespa/vespalib/stllike/hash_map.hpp>
namespace storage::distributor {
namespace {
const char *up_states = "uri";
const char *nonretired_up_states = "ui";
const char *nonretired_or_maintenance_up_states = "uim";
}
DistributorBucketSpace::DistributorBucketSpace()
: DistributorBucketSpace(0u)
{
}
DistributorBucketSpace::DistributorBucketSpace(uint16_t node_index)
: _bucketDatabase(std::make_unique<BTreeBucketDatabase>()),
_clusterState(),
_distribution(),
_node_index(node_index),
_distribution_bits(1u),
_merges_inhibited(false),
_pending_cluster_state(),
_available_nodes(),
_ownerships(),
_ideal_nodes()
{
}
DistributorBucketSpace::~DistributorBucketSpace() = default;
void
DistributorBucketSpace::clear()
{
_ownerships.clear();
_ideal_nodes.clear();
}
void
DistributorBucketSpace::enumerate_available_nodes()
{
_distribution_bits = _clusterState->getDistributionBitCount();
auto node_count = _clusterState->getNodeCount(lib::NodeType::STORAGE);
if (_pending_cluster_state) {
_distribution_bits = std::max(_distribution_bits, _pending_cluster_state->getDistributionBitCount());
node_count = std::min(node_count, _pending_cluster_state->getNodeCount(lib::NodeType::STORAGE));
}
std::vector<bool> nodes(node_count);
for (uint32_t i = 0; i < node_count; ++i) {
lib::Node node_key(lib::NodeType::STORAGE, i);
const lib::NodeState& ns(_clusterState->getNodeState(node_key));
if (ns.getState().oneOf(up_states)) {
if (!_pending_cluster_state || _pending_cluster_state->getNodeState(node_key).getState().oneOf(up_states)) {
nodes[i] = true;
}
}
}
_available_nodes = std::move(nodes);
}
void
DistributorBucketSpace::setClusterState(std::shared_ptr<const lib::ClusterState> clusterState)
{
_clusterState = std::move(clusterState);
clear();
enumerate_available_nodes();
}
void
DistributorBucketSpace::setDistribution(std::shared_ptr<const lib::Distribution> distribution) {
_distribution = std::move(distribution);
clear();
}
void
DistributorBucketSpace::set_pending_cluster_state(std::shared_ptr<const lib::ClusterState> pending_cluster_state)
{
_pending_cluster_state = std::move(pending_cluster_state);
clear();
enumerate_available_nodes();
}
bool
DistributorBucketSpace::owns_bucket_in_state(
const lib::Distribution& distribution,
const lib::ClusterState& cluster_state,
document::BucketId bucket) const
{
try {
uint16_t distributor = distribution.getIdealDistributorNode(cluster_state, bucket);
return (_node_index == distributor);
} catch (lib::TooFewBucketBitsInUseException& e) {
return false;
} catch (lib::NoDistributorsAvailableException& e) {
return false;
}
}
bool
DistributorBucketSpace::owns_bucket_in_state(const lib::ClusterState& clusterState, document::BucketId bucket) const
{
return owns_bucket_in_state(*_distribution, clusterState, bucket);
}
namespace {
void
setup_ideal_nodes_bundle(IdealServiceLayerNodesBundle& ideal_nodes_bundle,
const lib::Distribution& distribution,
const lib::ClusterState& cluster_state,
document::BucketId bucket)
{
ideal_nodes_bundle.set_nodes(distribution.getIdealStorageNodes(cluster_state, bucket, up_states),
distribution.getIdealStorageNodes(cluster_state, bucket, nonretired_up_states),
distribution.getIdealStorageNodes(cluster_state, bucket, nonretired_or_maintenance_up_states));
}
/*
* Check if we trigger a streaming search latency optimization where
* we spread out data for a single group over multiple storage nodes.
* See storage::lib::Distribution::getStorageSeed for details.
*/
bool is_split_group_bucket(document::BucketId bucket) noexcept
{
return bucket.getUsedBits() > 33;
}
// Ideal service layer nodes bundle used when is_split_group_bucket returns true
thread_local IdealServiceLayerNodesBundle fallback_ideal_nodes_bundle;
}
const IdealServiceLayerNodesBundle&
DistributorBucketSpace::get_ideal_service_layer_nodes_bundle(document::BucketId bucket) const
{
assert(bucket.getUsedBits() >= _distribution_bits);
if (is_split_group_bucket(bucket)) {
IdealServiceLayerNodesBundle &ideal_nodes_bundle = fallback_ideal_nodes_bundle;
setup_ideal_nodes_bundle(ideal_nodes_bundle, *_distribution, *_clusterState, bucket);
return ideal_nodes_bundle;
}
document::BucketId lookup_bucket(_distribution_bits, bucket.getId());
auto itr = _ideal_nodes.find(lookup_bucket);
if (itr != _ideal_nodes.end()) {
return *itr->second;
}
auto ideal_nodes_bundle = std::make_unique<IdealServiceLayerNodesBundle>();
setup_ideal_nodes_bundle(*ideal_nodes_bundle, *_distribution, *_clusterState, lookup_bucket);
auto insres = _ideal_nodes.insert(std::make_pair(lookup_bucket, std::move(ideal_nodes_bundle)));
assert(insres.second);
return *insres.first->second;
}
BucketOwnershipFlags
DistributorBucketSpace::get_bucket_ownership_flags(document::BucketId bucket) const
{
if (bucket.getUsedBits() < _distribution_bits) {
BucketOwnershipFlags flags;
if (!_pending_cluster_state) {
flags.set_owned_in_pending_state();
}
return flags;
}
document::BucketId super_bucket(_distribution_bits, bucket.getId());
auto itr = _ownerships.find(super_bucket);
if (itr != _ownerships.end()) {
return itr->second;
}
BucketOwnershipFlags flags;
if (!_pending_cluster_state || owns_bucket_in_state(*_distribution, *_pending_cluster_state, super_bucket)) {
flags.set_owned_in_pending_state();
}
if (owns_bucket_in_state(*_distribution, *_clusterState, super_bucket)) {
flags.set_owned_in_current_state();
}
auto insres = _ownerships.insert(std::make_pair(super_bucket, flags));
assert(insres.second);
return insres.first->second;
}
BucketOwnership
DistributorBucketSpace::check_ownership_in_pending_and_current_state(document::BucketId bucket) const
{
auto flags = get_bucket_ownership_flags(bucket);
if (!flags.owned_in_pending_state()) {
assert(_pending_cluster_state);
return BucketOwnership::createNotOwnedInState(*_pending_cluster_state);
}
if (flags.owned_in_current_state()) {
return BucketOwnership::createOwned();
} else {
return BucketOwnership::createNotOwnedInState(*_clusterState);
}
}
}
|
