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
|
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.indices.recovery;
import org.apache.lucene.store.RateLimiter;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.index.shard.PrimaryContext;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.index.store.Store;
import org.elasticsearch.index.store.StoreFileMetaData;
import org.elasticsearch.index.translog.Translog;
import org.elasticsearch.transport.EmptyTransportResponseHandler;
import org.elasticsearch.transport.TransportFuture;
import org.elasticsearch.transport.TransportRequestOptions;
import org.elasticsearch.transport.TransportService;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.atomic.AtomicLong;
import java.util.function.Consumer;
public class RemoteRecoveryTargetHandler implements RecoveryTargetHandler {
private final TransportService transportService;
private final long recoveryId;
private final ShardId shardId;
private final DiscoveryNode targetNode;
private final RecoverySettings recoverySettings;
private final TransportRequestOptions translogOpsRequestOptions;
private final TransportRequestOptions fileChunkRequestOptions;
private final AtomicLong bytesSinceLastPause = new AtomicLong();
private final Consumer<Long> onSourceThrottle;
public RemoteRecoveryTargetHandler(long recoveryId, ShardId shardId, TransportService transportService,
DiscoveryNode targetNode, RecoverySettings recoverySettings, Consumer<Long> onSourceThrottle) {
this.transportService = transportService;
this.recoveryId = recoveryId;
this.shardId = shardId;
this.targetNode = targetNode;
this.recoverySettings = recoverySettings;
this.onSourceThrottle = onSourceThrottle;
this.translogOpsRequestOptions = TransportRequestOptions.builder()
.withCompress(true)
.withType(TransportRequestOptions.Type.RECOVERY)
.withTimeout(recoverySettings.internalActionLongTimeout())
.build();
this.fileChunkRequestOptions = TransportRequestOptions.builder()
.withCompress(false) // lucene files are already compressed and therefore compressing this won't really help much so
// we are saving the cpu for other things
.withType(TransportRequestOptions.Type.RECOVERY)
.withTimeout(recoverySettings.internalActionTimeout())
.build();
}
@Override
public void prepareForTranslogOperations(int totalTranslogOps) throws IOException {
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.PREPARE_TRANSLOG,
new RecoveryPrepareForTranslogOperationsRequest(recoveryId, shardId, totalTranslogOps),
TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionTimeout()).build(),
EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
}
@Override
public void finalizeRecovery(final long globalCheckpoint) {
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.FINALIZE,
new RecoveryFinalizeRecoveryRequest(recoveryId, shardId, globalCheckpoint),
TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionLongTimeout()).build(),
EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
}
@Override
public void ensureClusterStateVersion(long clusterStateVersion) {
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.WAIT_CLUSTERSTATE,
new RecoveryWaitForClusterStateRequest(recoveryId, shardId, clusterStateVersion),
TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionLongTimeout()).build(),
EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
}
@Override
public void handoffPrimaryContext(final PrimaryContext primaryContext) {
transportService.submitRequest(
targetNode,
PeerRecoveryTargetService.Actions.HANDOFF_PRIMARY_CONTEXT,
new RecoveryHandoffPrimaryContextRequest(recoveryId, shardId, primaryContext),
TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionTimeout()).build(),
EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
}
@Override
public long indexTranslogOperations(List<Translog.Operation> operations, int totalTranslogOps) {
final RecoveryTranslogOperationsRequest translogOperationsRequest =
new RecoveryTranslogOperationsRequest(recoveryId, shardId, operations, totalTranslogOps);
final TransportFuture<RecoveryTranslogOperationsResponse> future = transportService.submitRequest(
targetNode,
PeerRecoveryTargetService.Actions.TRANSLOG_OPS,
translogOperationsRequest,
translogOpsRequestOptions,
RecoveryTranslogOperationsResponse.HANDLER);
return future.txGet().localCheckpoint;
}
@Override
public void receiveFileInfo(List<String> phase1FileNames, List<Long> phase1FileSizes, List<String> phase1ExistingFileNames,
List<Long> phase1ExistingFileSizes, int totalTranslogOps) {
RecoveryFilesInfoRequest recoveryInfoFilesRequest = new RecoveryFilesInfoRequest(recoveryId, shardId,
phase1FileNames, phase1FileSizes, phase1ExistingFileNames, phase1ExistingFileSizes, totalTranslogOps);
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.FILES_INFO, recoveryInfoFilesRequest,
TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionTimeout()).build(),
EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
}
@Override
public void cleanFiles(int totalTranslogOps, Store.MetadataSnapshot sourceMetaData) throws IOException {
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.CLEAN_FILES,
new RecoveryCleanFilesRequest(recoveryId, shardId, sourceMetaData, totalTranslogOps),
TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionTimeout()).build(),
EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
}
@Override
public void writeFileChunk(StoreFileMetaData fileMetaData, long position, BytesReference content, boolean
lastChunk, int totalTranslogOps) throws IOException {
// Pause using the rate limiter, if desired, to throttle the recovery
final long throttleTimeInNanos;
// always fetch the ratelimiter - it might be updated in real-time on the recovery settings
final RateLimiter rl = recoverySettings.rateLimiter();
if (rl != null) {
long bytes = bytesSinceLastPause.addAndGet(content.length());
if (bytes > rl.getMinPauseCheckBytes()) {
// Time to pause
bytesSinceLastPause.addAndGet(-bytes);
try {
throttleTimeInNanos = rl.pause(bytes);
onSourceThrottle.accept(throttleTimeInNanos);
} catch (IOException e) {
throw new ElasticsearchException("failed to pause recovery", e);
}
} else {
throttleTimeInNanos = 0;
}
} else {
throttleTimeInNanos = 0;
}
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.FILE_CHUNK,
new RecoveryFileChunkRequest(recoveryId, shardId, fileMetaData, position, content, lastChunk,
totalTranslogOps,
/* we send estimateTotalOperations with every request since we collect stats on the target and that way we can
* see how many translog ops we accumulate while copying files across the network. A future optimization
* would be in to restart file copy again (new deltas) if we have too many translog ops are piling up.
*/
throttleTimeInNanos), fileChunkRequestOptions, EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
}
}
|
