io.druid.indexer.HadoopDruidDetermineConfigurationJob.java Source code

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Here is the source code for io.druid.indexer.HadoopDruidDetermineConfigurationJob.java

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/*
 * Druid - a distributed column store.
 * Copyright 2012 - 2015 Metamarkets Group Inc.
 *
 * Licensed 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 io.druid.indexer;

import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.inject.Inject;
import com.metamx.common.logger.Logger;
import io.druid.timeline.partition.HashBasedNumberedShardSpec;
import io.druid.timeline.partition.NoneShardSpec;
import org.joda.time.DateTime;
import org.joda.time.DateTimeComparator;
import org.joda.time.Interval;

import java.util.List;
import java.util.Map;

/**
 */
public class HadoopDruidDetermineConfigurationJob implements Jobby {
    private static final Logger log = new Logger(HadoopDruidDetermineConfigurationJob.class);
    private final HadoopDruidIndexerConfig config;

    @Inject
    public HadoopDruidDetermineConfigurationJob(HadoopDruidIndexerConfig config) {
        this.config = config;
    }

    @Override
    public boolean run() {
        List<Jobby> jobs = Lists.newArrayList();

        JobHelper.ensurePaths(config);

        if (config.isDeterminingPartitions()) {
            jobs.add(config.getPartitionsSpec().getPartitionJob(config));
        } else {
            int shardsPerInterval = config.getPartitionsSpec().getNumShards();
            Map<DateTime, List<HadoopyShardSpec>> shardSpecs = Maps.newTreeMap(DateTimeComparator.getInstance());
            int shardCount = 0;
            for (Interval segmentGranularity : config.getSegmentGranularIntervals().get()) {
                DateTime bucket = segmentGranularity.getStart();
                if (shardsPerInterval > 0) {
                    List<HadoopyShardSpec> specs = Lists.newArrayListWithCapacity(shardsPerInterval);
                    for (int i = 0; i < shardsPerInterval; i++) {
                        specs.add(new HadoopyShardSpec(new HashBasedNumberedShardSpec(i, shardsPerInterval,
                                HadoopDruidIndexerConfig.jsonMapper), shardCount++));
                    }
                    shardSpecs.put(bucket, specs);
                    log.info("DateTime[%s], spec[%s]", bucket, specs);
                } else {
                    final HadoopyShardSpec spec = new HadoopyShardSpec(new NoneShardSpec(), shardCount++);
                    shardSpecs.put(bucket, Lists.newArrayList(spec));
                    log.info("DateTime[%s], spec[%s]", bucket, spec);
                }
            }
            config.setShardSpecs(shardSpecs);
        }

        return JobHelper.runJobs(jobs, config);

    }

}