org.elasticsearch.index.merge.scheduler.SerialMergeSchedulerProvider Maven / Gradle / Ivy
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* Licensed to ElasticSearch and Shay Banon under one
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* 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
*
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package org.elasticsearch.index.merge.scheduler;
import org.apache.lucene.index.*;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.logging.ESLogger;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.merge.MergeStats;
import org.elasticsearch.index.settings.IndexSettings;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.threadpool.ThreadPool;
import java.io.IOException;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArraySet;
/**
*
*/
public class SerialMergeSchedulerProvider extends MergeSchedulerProvider {
private Set schedulers = new CopyOnWriteArraySet();
@Inject
public SerialMergeSchedulerProvider(ShardId shardId, @IndexSettings Settings indexSettings, ThreadPool threadPool) {
super(shardId, indexSettings, threadPool);
logger.trace("using [serial] merge scheduler");
}
@Override
public MergeScheduler newMergeScheduler() {
CustomSerialMergeScheduler scheduler = new CustomSerialMergeScheduler(logger, this);
schedulers.add(scheduler);
return scheduler;
}
@Override
public MergeStats stats() {
MergeStats mergeStats = new MergeStats();
for (CustomSerialMergeScheduler scheduler : schedulers) {
mergeStats.add(scheduler.totalMerges(), scheduler.totalMergeTime(), scheduler.totalMergeNumDocs(), scheduler.totalMergeSizeInBytes(),
scheduler.currentMerges(), scheduler.currentMergesNumDocs(), scheduler.currentMergesSizeInBytes());
}
return mergeStats;
}
public static class CustomSerialMergeScheduler extends TrackingSerialMergeScheduler {
private final SerialMergeSchedulerProvider provider;
public CustomSerialMergeScheduler(ESLogger logger, SerialMergeSchedulerProvider provider) {
super(logger);
this.provider = provider;
}
@Override
public void merge(IndexWriter writer) throws CorruptIndexException, IOException {
try {
super.merge(writer);
} catch (Throwable e) {
logger.warn("failed to merge", e);
provider.failedMerge(new MergePolicy.MergeException(e, writer.getDirectory()));
throw new MergePolicy.MergeException(e, writer.getDirectory());
}
}
@Override
public void close() {
super.close();
provider.schedulers.remove(this);
}
}
}