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/*
* 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.index;
import org.apache.lucene.search.MatchAllDocsQuery;
import org.apache.lucene.search.TopDocs;
import org.elasticsearch.Version;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.common.compress.CompressedXContent;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.index.engine.Engine;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.index.shard.IndexShard;
import org.elasticsearch.index.translog.Translog;
import org.elasticsearch.test.ESSingleNodeTestCase;
import org.elasticsearch.threadpool.ThreadPool;
import java.io.IOException;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;
import static org.elasticsearch.cluster.metadata.IndexMetaData.SETTING_NUMBER_OF_REPLICAS;
import static org.elasticsearch.cluster.metadata.IndexMetaData.SETTING_NUMBER_OF_SHARDS;
/** Unit test(s) for IndexService */
public class IndexServiceTests extends ESSingleNodeTestCase {
public void testDetermineShadowEngineShouldBeUsed() {
IndexSettings regularSettings = new IndexSettings(
IndexMetaData
.builder("regular")
.settings(Settings.builder()
.put(SETTING_NUMBER_OF_SHARDS, 2)
.put(SETTING_NUMBER_OF_REPLICAS, 1)
.put(IndexMetaData.SETTING_VERSION_CREATED, Version.CURRENT)
.build())
.build(),
Settings.EMPTY);
IndexSettings shadowSettings = new IndexSettings(
IndexMetaData
.builder("shadow")
.settings(Settings.builder()
.put(SETTING_NUMBER_OF_SHARDS, 2)
.put(SETTING_NUMBER_OF_REPLICAS, 1)
.put(IndexMetaData.SETTING_SHADOW_REPLICAS, true)
.put(IndexMetaData.SETTING_VERSION_CREATED, Version.CURRENT)
.build())
.build(),
Settings.EMPTY);
assertFalse("no shadow replicas for normal settings", IndexService.useShadowEngine(true, regularSettings));
assertFalse("no shadow replicas for normal settings", IndexService.useShadowEngine(false, regularSettings));
assertFalse("no shadow replicas for primary shard with shadow settings", IndexService.useShadowEngine(true, shadowSettings));
assertTrue("shadow replicas for replica shards with shadow settings",IndexService.useShadowEngine(false, shadowSettings));
}
public static CompressedXContent filter(QueryBuilder filterBuilder) throws IOException {
XContentBuilder builder = XContentFactory.jsonBuilder();
filterBuilder.toXContent(builder, ToXContent.EMPTY_PARAMS);
builder.close();
return new CompressedXContent(builder.string());
}
public void testBaseAsyncTask() throws InterruptedException, IOException {
IndexService indexService = createIndex("test", Settings.EMPTY);
AtomicReference<CountDownLatch> latch = new AtomicReference<>(new CountDownLatch(1));
AtomicReference<CountDownLatch> latch2 = new AtomicReference<>(new CountDownLatch(1));
final AtomicInteger count = new AtomicInteger();
IndexService.BaseAsyncTask task = new IndexService.BaseAsyncTask(indexService, TimeValue.timeValueMillis(1)) {
@Override
protected void runInternal() {
final CountDownLatch l1 = latch.get();
final CountDownLatch l2 = latch2.get();
count.incrementAndGet();
assertTrue("generic threadpool is configured", Thread.currentThread().getName().contains("[generic]"));
l1.countDown();
try {
l2.await();
} catch (InterruptedException e) {
fail("interrupted");
}
if (randomBoolean()) { // task can throw exceptions!!
if (randomBoolean()) {
throw new RuntimeException("foo");
} else {
throw new RuntimeException("bar");
}
}
}
@Override
protected String getThreadPool() {
return ThreadPool.Names.GENERIC;
}
};
latch.get().await();
latch.set(new CountDownLatch(1));
assertEquals(1, count.get());
// here we need to swap first before we let it go otherwise threads might be very fast and run that task twice due to
// random exception and the schedule interval is 1ms
latch2.getAndSet(new CountDownLatch(1)).countDown();
latch.get().await();
assertEquals(2, count.get());
task.close();
latch2.get().countDown();
assertEquals(2, count.get());
task = new IndexService.BaseAsyncTask(indexService, TimeValue.timeValueMillis(1000000)) {
@Override
protected void runInternal() {
}
};
assertTrue(task.mustReschedule());
indexService.close("simon says", false);
assertFalse("no shards left", task.mustReschedule());
assertTrue(task.isScheduled());
task.close();
assertFalse(task.isScheduled());
}
public void testRefreshTaskIsUpdated() throws IOException {
IndexService indexService = createIndex("test", Settings.EMPTY);
IndexService.AsyncRefreshTask refreshTask = indexService.getRefreshTask();
assertEquals(1000, refreshTask.getInterval().millis());
assertTrue(indexService.getRefreshTask().mustReschedule());
// now disable
IndexMetaData metaData = IndexMetaData.builder(indexService.getMetaData()).settings(Settings.builder().put(indexService.getMetaData().getSettings()).put(IndexSettings.INDEX_REFRESH_INTERVAL_SETTING.getKey(), -1)).build();
indexService.updateMetaData(metaData);
assertNotSame(refreshTask, indexService.getRefreshTask());
assertTrue(refreshTask.isClosed());
assertFalse(refreshTask.isScheduled());
assertFalse(indexService.getRefreshTask().mustReschedule());
// set it to 100ms
metaData = IndexMetaData.builder(indexService.getMetaData()).settings(Settings.builder().put(indexService.getMetaData().getSettings()).put(IndexSettings.INDEX_REFRESH_INTERVAL_SETTING.getKey(), "100ms")).build();
indexService.updateMetaData(metaData);
assertNotSame(refreshTask, indexService.getRefreshTask());
assertTrue(refreshTask.isClosed());
refreshTask = indexService.getRefreshTask();
assertTrue(refreshTask.mustReschedule());
assertTrue(refreshTask.isScheduled());
assertEquals(100, refreshTask.getInterval().millis());
// set it to 200ms
metaData = IndexMetaData.builder(indexService.getMetaData()).settings(Settings.builder().put(indexService.getMetaData().getSettings()).put(IndexSettings.INDEX_REFRESH_INTERVAL_SETTING.getKey(), "200ms")).build();
indexService.updateMetaData(metaData);
assertNotSame(refreshTask, indexService.getRefreshTask());
assertTrue(refreshTask.isClosed());
refreshTask = indexService.getRefreshTask();
assertTrue(refreshTask.mustReschedule());
assertTrue(refreshTask.isScheduled());
assertEquals(200, refreshTask.getInterval().millis());
// set it to 200ms again
metaData = IndexMetaData.builder(indexService.getMetaData()).settings(Settings.builder().put(indexService.getMetaData().getSettings()).put(IndexSettings.INDEX_REFRESH_INTERVAL_SETTING.getKey(), "200ms")).build();
indexService.updateMetaData(metaData);
assertSame(refreshTask, indexService.getRefreshTask());
assertTrue(indexService.getRefreshTask().mustReschedule());
assertTrue(refreshTask.isScheduled());
assertFalse(refreshTask.isClosed());
assertEquals(200, refreshTask.getInterval().millis());
indexService.close("simon says", false);
assertFalse(refreshTask.isScheduled());
assertTrue(refreshTask.isClosed());
}
public void testFsyncTaskIsRunning() throws IOException {
IndexService indexService = createIndex("test", Settings.builder().put(IndexSettings.INDEX_TRANSLOG_DURABILITY_SETTING.getKey(), Translog.Durability.ASYNC).build());
IndexService.AsyncTranslogFSync fsyncTask = indexService.getFsyncTask();
assertNotNull(fsyncTask);
assertEquals(5000, fsyncTask.getInterval().millis());
assertTrue(fsyncTask.mustReschedule());
assertTrue(fsyncTask.isScheduled());
indexService.close("simon says", false);
assertFalse(fsyncTask.isScheduled());
assertTrue(fsyncTask.isClosed());
indexService = createIndex("test1", Settings.EMPTY);
assertNull(indexService.getFsyncTask());
}
public void testGlobalCheckpointTaskIsRunning() throws IOException {
IndexService indexService = createIndex("test", Settings.EMPTY);
IndexService.AsyncGlobalCheckpointTask task = indexService.getGlobalCheckpointTask();
assertNotNull(task);
assertEquals(IndexSettings.INDEX_SEQ_NO_CHECKPOINT_SYNC_INTERVAL.getDefault(Settings.EMPTY), task.getInterval());
assertTrue(task.mustReschedule());
assertTrue(task.isScheduled());
indexService.close("simon says", false);
assertFalse(task.isScheduled());
assertTrue(task.isClosed());
}
public void testRefreshActuallyWorks() throws Exception {
IndexService indexService = createIndex("test", Settings.EMPTY);
ensureGreen("test");
IndexService.AsyncRefreshTask refreshTask = indexService.getRefreshTask();
assertEquals(1000, refreshTask.getInterval().millis());
assertTrue(indexService.getRefreshTask().mustReschedule());
// now disable
IndexMetaData metaData = IndexMetaData.builder(indexService.getMetaData()).settings(Settings.builder().put(indexService.getMetaData().getSettings()).put(IndexSettings.INDEX_REFRESH_INTERVAL_SETTING.getKey(), -1)).build();
indexService.updateMetaData(metaData);
client().prepareIndex("test", "test", "1").setSource("{\"foo\": \"bar\"}").get();
IndexShard shard = indexService.getShard(0);
try (Engine.Searcher searcher = shard.acquireSearcher("test")) {
TopDocs search = searcher.searcher().search(new MatchAllDocsQuery(), 10);
assertEquals(0, search.totalHits);
}
// refresh every millisecond
metaData = IndexMetaData.builder(indexService.getMetaData()).settings(Settings.builder().put(indexService.getMetaData().getSettings()).put(IndexSettings.INDEX_REFRESH_INTERVAL_SETTING.getKey(), "1ms")).build();
indexService.updateMetaData(metaData);
assertBusy(() -> {
try (Engine.Searcher searcher = shard.acquireSearcher("test")) {
TopDocs search = searcher.searcher().search(new MatchAllDocsQuery(), 10);
assertEquals(1, search.totalHits);
} catch (IOException e) {
fail(e.getMessage());
}
});
}
public void testAsyncFsyncActuallyWorks() throws Exception {
Settings settings = Settings.builder()
.put(IndexSettings.INDEX_TRANSLOG_SYNC_INTERVAL_SETTING.getKey(), "100ms") // very often :)
.put(IndexSettings.INDEX_TRANSLOG_DURABILITY_SETTING.getKey(), Translog.Durability.ASYNC)
.build();
IndexService indexService = createIndex("test", settings);
ensureGreen("test");
assertTrue(indexService.getRefreshTask().mustReschedule());
client().prepareIndex("test", "test", "1").setSource("{\"foo\": \"bar\"}").get();
IndexShard shard = indexService.getShard(0);
assertBusy(() -> {
assertFalse(shard.getTranslog().syncNeeded());
});
}
public void testRescheduleAsyncFsync() throws Exception {
Settings settings = Settings.builder()
.put(IndexSettings.INDEX_TRANSLOG_SYNC_INTERVAL_SETTING.getKey(), "100ms") // very often :)
.put(IndexSettings.INDEX_TRANSLOG_DURABILITY_SETTING.getKey(), Translog.Durability.REQUEST)
.build();
IndexService indexService = createIndex("test", settings);
ensureGreen("test");
assertNull(indexService.getFsyncTask());
IndexMetaData metaData = IndexMetaData.builder(indexService.getMetaData()).settings(Settings.builder().put(indexService.getMetaData().getSettings()).put(IndexSettings.INDEX_TRANSLOG_DURABILITY_SETTING.getKey(), Translog.Durability.ASYNC)).build();
indexService.updateMetaData(metaData);
assertNotNull(indexService.getFsyncTask());
assertTrue(indexService.getRefreshTask().mustReschedule());
client().prepareIndex("test", "test", "1").setSource("{\"foo\": \"bar\"}").get();
IndexShard shard = indexService.getShard(0);
assertBusy(() -> {
assertFalse(shard.getTranslog().syncNeeded());
});
metaData = IndexMetaData.builder(indexService.getMetaData()).settings(Settings.builder().put(indexService.getMetaData().getSettings()).put(IndexSettings.INDEX_TRANSLOG_DURABILITY_SETTING.getKey(), Translog.Durability.REQUEST)).build();
indexService.updateMetaData(metaData);
assertNull(indexService.getFsyncTask());
metaData = IndexMetaData.builder(indexService.getMetaData()).settings(Settings.builder().put(indexService.getMetaData().getSettings()).put(IndexSettings.INDEX_TRANSLOG_DURABILITY_SETTING.getKey(), Translog.Durability.ASYNC)).build();
indexService.updateMetaData(metaData);
assertNotNull(indexService.getFsyncTask());
}
public void testIllegalFsyncInterval() {
Settings settings = Settings.builder()
.put(IndexSettings.INDEX_TRANSLOG_SYNC_INTERVAL_SETTING.getKey(), "0ms") // disable
.build();
try {
createIndex("test", settings);
fail();
} catch (IllegalArgumentException ex) {
assertEquals("Failed to parse value [0ms] for setting [index.translog.sync_interval] must be >= 100ms", ex.getMessage());
}
}
}
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