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
|
/*
* 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.flush;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.admin.indices.flush.FlushResponse;
import org.elasticsearch.action.admin.indices.flush.SyncedFlushResponse;
import org.elasticsearch.action.admin.indices.stats.IndexStats;
import org.elasticsearch.action.admin.indices.stats.ShardStats;
import org.elasticsearch.action.support.ActiveShardCount;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.cluster.routing.allocation.command.MoveAllocationCommand;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.ByteSizeUnit;
import org.elasticsearch.common.unit.ByteSizeValue;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.Index;
import org.elasticsearch.index.IndexSettings;
import org.elasticsearch.index.engine.Engine;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.test.ESIntegTestCase;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import static org.hamcrest.Matchers.emptyIterable;
import static org.hamcrest.Matchers.equalTo;
public class FlushIT extends ESIntegTestCase {
public void testWaitIfOngoing() throws InterruptedException {
createIndex("test");
ensureGreen("test");
final int numIters = scaledRandomIntBetween(10, 30);
for (int i = 0; i < numIters; i++) {
for (int j = 0; j < 10; j++) {
client().prepareIndex("test", "test").setSource("{}", XContentType.JSON).get();
}
final CountDownLatch latch = new CountDownLatch(10);
final CopyOnWriteArrayList<Throwable> errors = new CopyOnWriteArrayList<>();
for (int j = 0; j < 10; j++) {
client().admin().indices().prepareFlush("test").execute(new ActionListener<FlushResponse>() {
@Override
public void onResponse(FlushResponse flushResponse) {
try {
// don't use assertAllSuccessful it uses a randomized context that belongs to a different thread
assertThat("Unexpected ShardFailures: " + Arrays.toString(flushResponse.getShardFailures()), flushResponse.getFailedShards(), equalTo(0));
latch.countDown();
} catch (Exception ex) {
onFailure(ex);
}
}
@Override
public void onFailure(Exception e) {
errors.add(e);
latch.countDown();
}
});
}
latch.await();
assertThat(errors, emptyIterable());
}
}
public void testSyncedFlush() throws ExecutionException, InterruptedException, IOException {
internalCluster().ensureAtLeastNumDataNodes(2);
prepareCreate("test").setSettings(IndexMetaData.SETTING_NUMBER_OF_SHARDS, 1).get();
ensureGreen();
final Index index = client().admin().cluster().prepareState().get().getState().metaData().index("test").getIndex();
IndexStats indexStats = client().admin().indices().prepareStats("test").get().getIndex("test");
for (ShardStats shardStats : indexStats.getShards()) {
assertNull(shardStats.getCommitStats().getUserData().get(Engine.SYNC_COMMIT_ID));
}
ShardsSyncedFlushResult result;
if (randomBoolean()) {
logger.info("--> sync flushing shard 0");
result = SyncedFlushUtil.attemptSyncedFlush(internalCluster(), new ShardId(index, 0));
} else {
logger.info("--> sync flushing index [test]");
SyncedFlushResponse indicesResult = client().admin().indices().prepareSyncedFlush("test").get();
result = indicesResult.getShardsResultPerIndex().get("test").get(0);
}
assertFalse(result.failed());
assertThat(result.totalShards(), equalTo(indexStats.getShards().length));
assertThat(result.successfulShards(), equalTo(indexStats.getShards().length));
indexStats = client().admin().indices().prepareStats("test").get().getIndex("test");
String syncId = result.syncId();
for (ShardStats shardStats : indexStats.getShards()) {
final String shardSyncId = shardStats.getCommitStats().getUserData().get(Engine.SYNC_COMMIT_ID);
assertThat(shardSyncId, equalTo(syncId));
}
// now, start new node and relocate a shard there and see if sync id still there
String newNodeName = internalCluster().startNode();
ClusterState clusterState = client().admin().cluster().prepareState().get().getState();
ShardRouting shardRouting = clusterState.getRoutingTable().index("test").shard(0).iterator().next();
String currentNodeName = clusterState.nodes().resolveNode(shardRouting.currentNodeId()).getName();
assertFalse(currentNodeName.equals(newNodeName));
internalCluster().client().admin().cluster().prepareReroute().add(new MoveAllocationCommand("test", 0, currentNodeName, newNodeName)).get();
client().admin().cluster().prepareHealth()
.setWaitForNoRelocatingShards(true)
.get();
indexStats = client().admin().indices().prepareStats("test").get().getIndex("test");
for (ShardStats shardStats : indexStats.getShards()) {
assertNotNull(shardStats.getCommitStats().getUserData().get(Engine.SYNC_COMMIT_ID));
}
client().admin().indices().prepareUpdateSettings("test").setSettings(Settings.builder().put(IndexMetaData.SETTING_NUMBER_OF_REPLICAS, 0).build()).get();
ensureGreen("test");
indexStats = client().admin().indices().prepareStats("test").get().getIndex("test");
for (ShardStats shardStats : indexStats.getShards()) {
assertNotNull(shardStats.getCommitStats().getUserData().get(Engine.SYNC_COMMIT_ID));
}
client().admin().indices().prepareUpdateSettings("test").setSettings(Settings.builder().put(IndexMetaData.SETTING_NUMBER_OF_REPLICAS, internalCluster().numDataNodes() - 1).build()).get();
ensureGreen("test");
indexStats = client().admin().indices().prepareStats("test").get().getIndex("test");
for (ShardStats shardStats : indexStats.getShards()) {
assertNotNull(shardStats.getCommitStats().getUserData().get(Engine.SYNC_COMMIT_ID));
}
}
public void testSyncedFlushWithConcurrentIndexing() throws Exception {
internalCluster().ensureAtLeastNumDataNodes(3);
createIndex("test");
client().admin().indices().prepareUpdateSettings("test").setSettings(
Settings.builder().put(IndexSettings.INDEX_TRANSLOG_FLUSH_THRESHOLD_SIZE_SETTING.getKey(), new ByteSizeValue(1, ByteSizeUnit.PB)).put("index.refresh_interval", -1).put("index.number_of_replicas", internalCluster().numDataNodes() - 1))
.get();
ensureGreen();
final AtomicBoolean stop = new AtomicBoolean(false);
final AtomicInteger numDocs = new AtomicInteger(0);
Thread indexingThread = new Thread() {
@Override
public void run() {
while (stop.get() == false) {
client().prepareIndex().setIndex("test").setType("doc").setSource("{}", XContentType.JSON).get();
numDocs.incrementAndGet();
}
}
};
indexingThread.start();
IndexStats indexStats = client().admin().indices().prepareStats("test").get().getIndex("test");
for (ShardStats shardStats : indexStats.getShards()) {
assertNull(shardStats.getCommitStats().getUserData().get(Engine.SYNC_COMMIT_ID));
}
logger.info("--> trying sync flush");
SyncedFlushResponse syncedFlushResult = client().admin().indices().prepareSyncedFlush("test").get();
logger.info("--> sync flush done");
stop.set(true);
indexingThread.join();
indexStats = client().admin().indices().prepareStats("test").get().getIndex("test");
assertFlushResponseEqualsShardStats(indexStats.getShards(), syncedFlushResult.getShardsResultPerIndex().get("test"));
refresh();
assertThat(client().prepareSearch().setSize(0).get().getHits().totalHits(), equalTo((long) numDocs.get()));
logger.info("indexed {} docs", client().prepareSearch().setSize(0).get().getHits().totalHits());
logClusterState();
internalCluster().fullRestart();
ensureGreen();
assertThat(client().prepareSearch().setSize(0).get().getHits().totalHits(), equalTo((long) numDocs.get()));
}
private void assertFlushResponseEqualsShardStats(ShardStats[] shardsStats, List<ShardsSyncedFlushResult> syncedFlushResults) {
for (final ShardStats shardStats : shardsStats) {
for (final ShardsSyncedFlushResult shardResult : syncedFlushResults) {
if (shardStats.getShardRouting().getId() == shardResult.shardId().getId()) {
for (Map.Entry<ShardRouting, SyncedFlushService.ShardSyncedFlushResponse> singleResponse : shardResult.shardResponses().entrySet()) {
if (singleResponse.getKey().currentNodeId().equals(shardStats.getShardRouting().currentNodeId())) {
if (singleResponse.getValue().success()) {
logger.info("{} sync flushed on node {}", singleResponse.getKey().shardId(), singleResponse.getKey().currentNodeId());
assertNotNull(shardStats.getCommitStats().getUserData().get(Engine.SYNC_COMMIT_ID));
} else {
logger.info("{} sync flush failed for on node {}", singleResponse.getKey().shardId(), singleResponse.getKey().currentNodeId());
assertNull(shardStats.getCommitStats().getUserData().get(Engine.SYNC_COMMIT_ID));
}
}
}
}
}
}
}
public void testUnallocatedShardsDoesNotHang() throws InterruptedException {
// create an index but disallow allocation
prepareCreate("test").setWaitForActiveShards(ActiveShardCount.NONE).setSettings(Settings.builder().put("index.routing.allocation.include._name", "nonexistent")).get();
// this should not hang but instead immediately return with empty result set
List<ShardsSyncedFlushResult> shardsResult = client().admin().indices().prepareSyncedFlush("test").get().getShardsResultPerIndex().get("test");
// just to make sure the test actually tests the right thing
int numShards = client().admin().indices().prepareGetSettings("test").get().getIndexToSettings().get("test").getAsInt(IndexMetaData.SETTING_NUMBER_OF_SHARDS, -1);
assertThat(shardsResult.size(), equalTo(numShards));
assertThat(shardsResult.get(0).failureReason(), equalTo("no active shards"));
}
}
|
