mirror of https://github.com/apache/druid.git
allow legacy index generator
This commit is contained in:
fjy
parent
197c80a694
commit
351afb8be7
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@ -207,6 +207,12 @@ public class HadoopDruidIndexerConfig
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}
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}
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// TODO: remove this
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public boolean isLegacy()
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{
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return schema.isLegacy();
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}
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@JsonProperty
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public HadoopIngestionSpec getSchema()
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{
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@ -57,7 +57,11 @@ public class HadoopDruidIndexerJob implements Jobby
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List<Jobby> jobs = Lists.newArrayList();
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JobHelper.ensurePaths(config);
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indexJob = new IndexGeneratorJob(config);
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if (config.isLegacy()) {
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indexJob = new LegacyIndexGeneratorJob(config);
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} else {
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indexJob = new IndexGeneratorJob(config);
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}
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jobs.add(indexJob);
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if (dbUpdaterJob != null) {
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@ -66,15 +70,17 @@ public class HadoopDruidIndexerJob implements Jobby
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log.info("No updaterJobSpec set, not uploading to database");
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}
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jobs.add(new Jobby()
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{
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@Override
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public boolean run()
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{
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publishedSegments = IndexGeneratorJob.getPublishedSegments(config);
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return true;
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}
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});
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jobs.add(
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new Jobby()
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{
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@Override
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public boolean run()
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{
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publishedSegments = IndexGeneratorJob.getPublishedSegments(config);
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return true;
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}
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}
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);
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JobHelper.runJobs(jobs, config);
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@ -50,11 +50,14 @@ public class HadoopIngestionSpec extends IngestionSpec<HadoopIOConfig, HadoopTun
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private final HadoopIOConfig ioConfig;
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private final HadoopTuningConfig tuningConfig;
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private final boolean legacy; // TODO: remove
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@JsonCreator
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public HadoopIngestionSpec(
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@JsonProperty("dataSchema") DataSchema dataSchema,
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@JsonProperty("ioConfig") HadoopIOConfig ioConfig,
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@JsonProperty("tuningConfig") HadoopTuningConfig tuningConfig,
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@JsonProperty("legacy") boolean legacy, // TODO: remove
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// All deprecated
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final @JsonProperty("dataSource") String dataSource,
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final @JsonProperty("timestampSpec") TimestampSpec timestampSpec,
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@ -84,6 +87,7 @@ public class HadoopIngestionSpec extends IngestionSpec<HadoopIOConfig, HadoopTun
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)
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{
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super(dataSchema, ioConfig, tuningConfig);
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this.legacy = legacy;
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if (dataSchema != null) {
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this.dataSchema = dataSchema;
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@ -197,6 +201,7 @@ public class HadoopIngestionSpec extends IngestionSpec<HadoopIOConfig, HadoopTun
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schema,
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ioConfig,
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tuningConfig,
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legacy,
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null,
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null,
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null,
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@ -230,6 +235,7 @@ public class HadoopIngestionSpec extends IngestionSpec<HadoopIOConfig, HadoopTun
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dataSchema,
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config,
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tuningConfig,
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legacy,
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null,
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null,
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null,
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@ -263,6 +269,7 @@ public class HadoopIngestionSpec extends IngestionSpec<HadoopIOConfig, HadoopTun
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dataSchema,
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ioConfig,
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config,
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legacy,
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null,
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null,
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null,
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@ -289,4 +296,11 @@ public class HadoopIngestionSpec extends IngestionSpec<HadoopIOConfig, HadoopTun
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null
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);
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}
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// TODO: remove
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@JsonProperty
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public boolean isLegacy()
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{
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return legacy;
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}
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}
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@ -0,0 +1,609 @@
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/*
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* Druid - a distributed column store.
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* Copyright (C) 2012, 2013 Metamarkets Group Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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package io.druid.indexer;
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import com.google.common.base.Optional;
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import com.google.common.base.Throwables;
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import com.google.common.collect.ImmutableMap;
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import com.google.common.collect.Iterables;
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import com.google.common.collect.Lists;
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import com.google.common.collect.Sets;
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import com.google.common.io.Closeables;
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import com.google.common.primitives.Longs;
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import com.metamx.common.IAE;
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import com.metamx.common.ISE;
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import com.metamx.common.guava.CloseQuietly;
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import com.metamx.common.logger.Logger;
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import io.druid.data.input.InputRow;
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import io.druid.data.input.impl.StringInputRowParser;
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import io.druid.offheap.OffheapBufferPool;
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import io.druid.query.aggregation.AggregatorFactory;
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import io.druid.segment.IndexIO;
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import io.druid.segment.IndexMerger;
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import io.druid.segment.QueryableIndex;
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import io.druid.segment.SegmentUtils;
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import io.druid.segment.incremental.IncrementalIndex;
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import io.druid.segment.incremental.IncrementalIndexSchema;
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import io.druid.timeline.DataSegment;
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import org.apache.commons.io.FileUtils;
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import org.apache.hadoop.conf.Configurable;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.fs.FSDataOutputStream;
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import org.apache.hadoop.fs.FileStatus;
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import org.apache.hadoop.fs.FileSystem;
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import org.apache.hadoop.fs.LocalFileSystem;
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import org.apache.hadoop.fs.Path;
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import org.apache.hadoop.fs.s3native.NativeS3FileSystem;
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import org.apache.hadoop.hdfs.DistributedFileSystem;
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import org.apache.hadoop.io.BytesWritable;
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import org.apache.hadoop.io.Text;
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import org.apache.hadoop.mapred.InvalidJobConfException;
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import org.apache.hadoop.mapreduce.Counter;
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import org.apache.hadoop.mapreduce.Job;
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import org.apache.hadoop.mapreduce.JobContext;
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import org.apache.hadoop.mapreduce.Partitioner;
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import org.apache.hadoop.mapreduce.Reducer;
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import org.apache.hadoop.mapreduce.lib.input.CombineTextInputFormat;
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import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
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import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
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import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
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import org.joda.time.DateTime;
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import org.joda.time.Interval;
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import java.io.BufferedOutputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.URI;
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import java.nio.ByteBuffer;
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import java.util.Arrays;
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import java.util.List;
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import java.util.Set;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipOutputStream;
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/**
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*/
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public class LegacyIndexGeneratorJob extends IndexGeneratorJob
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{
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private static final Logger log = new Logger(IndexGeneratorJob.class);
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private final HadoopDruidIndexerConfig config;
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private IndexGeneratorStats jobStats;
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public LegacyIndexGeneratorJob(
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HadoopDruidIndexerConfig config
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)
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{
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super(config);
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this.config = config;
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this.jobStats = new IndexGeneratorStats();
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}
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public boolean run()
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{
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try {
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Job job = new Job(
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new Configuration(),
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String.format("%s-index-generator-%s", config.getDataSource(), config.getIntervals())
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);
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job.getConfiguration().set("io.sort.record.percent", "0.23");
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JobHelper.injectSystemProperties(job);
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if (config.isCombineText()) {
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job.setInputFormatClass(CombineTextInputFormat.class);
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} else {
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job.setInputFormatClass(TextInputFormat.class);
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}
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job.setMapperClass(IndexGeneratorMapper.class);
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job.setMapOutputValueClass(Text.class);
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SortableBytes.useSortableBytesAsMapOutputKey(job);
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job.setNumReduceTasks(Iterables.size(config.getAllBuckets().get()));
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job.setPartitionerClass(IndexGeneratorPartitioner.class);
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job.setReducerClass(IndexGeneratorReducer.class);
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job.setOutputKeyClass(BytesWritable.class);
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job.setOutputValueClass(Text.class);
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job.setOutputFormatClass(IndexGeneratorOutputFormat.class);
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FileOutputFormat.setOutputPath(job, config.makeIntermediatePath());
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config.addInputPaths(job);
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config.addJobProperties(job);
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config.intoConfiguration(job);
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JobHelper.setupClasspath(config, job);
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job.submit();
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log.info("Job %s submitted, status available at %s", job.getJobName(), job.getTrackingURL());
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boolean success = job.waitForCompletion(true);
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Counter invalidRowCount = job.getCounters()
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.findCounter(HadoopDruidIndexerConfig.IndexJobCounters.INVALID_ROW_COUNTER);
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jobStats.setInvalidRowCount(invalidRowCount.getValue());
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return success;
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}
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catch (Exception e) {
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throw new RuntimeException(e);
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}
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}
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public static class IndexGeneratorMapper extends HadoopDruidIndexerMapper<BytesWritable, Text>
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{
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@Override
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protected void innerMap(
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InputRow inputRow,
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Text text,
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Context context
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) throws IOException, InterruptedException
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{
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// Group by bucket, sort by timestamp
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final Optional<Bucket> bucket = getConfig().getBucket(inputRow);
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if (!bucket.isPresent()) {
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throw new ISE("WTF?! No bucket found for row: %s", inputRow);
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}
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context.write(
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new SortableBytes(
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bucket.get().toGroupKey(),
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Longs.toByteArray(inputRow.getTimestampFromEpoch())
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).toBytesWritable(),
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text
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);
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}
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}
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public static class IndexGeneratorPartitioner extends Partitioner<BytesWritable, Text> implements Configurable
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{
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private Configuration config;
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@Override
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public int getPartition(BytesWritable bytesWritable, Text text, int numPartitions)
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{
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final ByteBuffer bytes = ByteBuffer.wrap(bytesWritable.getBytes());
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bytes.position(4); // Skip length added by SortableBytes
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int shardNum = bytes.getInt();
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if (config.get("mapred.job.tracker").equals("local")) {
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return shardNum % numPartitions;
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} else {
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if (shardNum >= numPartitions) {
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throw new ISE("Not enough partitions, shard[%,d] >= numPartitions[%,d]", shardNum, numPartitions);
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}
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return shardNum;
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}
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}
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@Override
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public Configuration getConf()
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{
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return config;
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}
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@Override
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public void setConf(Configuration config)
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{
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this.config = config;
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}
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}
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public static class IndexGeneratorReducer extends Reducer<BytesWritable, Text, BytesWritable, Text>
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{
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private HadoopDruidIndexerConfig config;
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private List<String> metricNames = Lists.newArrayList();
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private StringInputRowParser parser;
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@Override
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protected void setup(Context context)
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throws IOException, InterruptedException
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{
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config = HadoopDruidIndexerConfig.fromConfiguration(context.getConfiguration());
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for (AggregatorFactory factory : config.getSchema().getDataSchema().getAggregators()) {
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metricNames.add(factory.getName().toLowerCase());
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}
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parser = config.getParser();
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}
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@Override
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protected void reduce(
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BytesWritable key, Iterable<Text> values, final Context context
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) throws IOException, InterruptedException
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{
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SortableBytes keyBytes = SortableBytes.fromBytesWritable(key);
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Bucket bucket = Bucket.fromGroupKey(keyBytes.getGroupKey()).lhs;
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final Interval interval = config.getGranularitySpec().bucketInterval(bucket.time).get();
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//final DataRollupSpec rollupSpec = config.getRollupSpec();
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final AggregatorFactory[] aggs = config.getSchema().getDataSchema().getAggregators();
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IncrementalIndex index = makeIncrementalIndex(bucket, aggs);
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try {
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File baseFlushFile = File.createTempFile("base", "flush");
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baseFlushFile.delete();
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baseFlushFile.mkdirs();
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Set<File> toMerge = Sets.newTreeSet();
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int indexCount = 0;
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int lineCount = 0;
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int runningTotalLineCount = 0;
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long startTime = System.currentTimeMillis();
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Set<String> allDimensionNames = Sets.newHashSet();
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final IndexMerger.ProgressIndicator progressIndicator = new IndexMerger.ProgressIndicator()
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{
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@Override
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public void progress()
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{
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context.progress();
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}
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};
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for (final Text value : values) {
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context.progress();
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final InputRow inputRow = index.formatRow(parser.parse(value.toString()));
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allDimensionNames.addAll(inputRow.getDimensions());
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int numRows = index.add(inputRow);
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++lineCount;
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if (index.isFull()) {
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log.info(
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"%,d lines to %,d rows in %,d millis",
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lineCount - runningTotalLineCount,
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numRows,
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System.currentTimeMillis() - startTime
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);
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runningTotalLineCount = lineCount;
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final File file = new File(baseFlushFile, String.format("index%,05d", indexCount));
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toMerge.add(file);
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context.progress();
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IndexMerger.persist(
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index, interval, file, progressIndicator
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);
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// close this index and make a new one
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index.close();
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index = makeIncrementalIndex(bucket, aggs);
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startTime = System.currentTimeMillis();
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++indexCount;
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}
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}
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log.info("%,d lines completed.", lineCount);
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List<QueryableIndex> indexes = Lists.newArrayListWithCapacity(indexCount);
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final File mergedBase;
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if (toMerge.size() == 0) {
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if (index.isEmpty()) {
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throw new IAE("If you try to persist empty indexes you are going to have a bad time");
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}
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mergedBase = new File(baseFlushFile, "merged");
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IndexMerger.persist(
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index, interval, mergedBase, progressIndicator
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);
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} else {
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if (!index.isEmpty()) {
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final File finalFile = new File(baseFlushFile, "final");
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IndexMerger.persist(
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index, interval, finalFile, progressIndicator
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);
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toMerge.add(finalFile);
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}
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for (File file : toMerge) {
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indexes.add(IndexIO.loadIndex(file));
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}
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mergedBase = IndexMerger.mergeQueryableIndex(
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indexes, aggs, new File(baseFlushFile, "merged"), progressIndicator
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);
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}
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serializeOutIndex(context, bucket, mergedBase, Lists.newArrayList(allDimensionNames));
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for (File file : toMerge) {
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FileUtils.deleteDirectory(file);
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}
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}
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finally {
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index.close();
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}
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}
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private void serializeOutIndex(Context context, Bucket bucket, File mergedBase, List<String> dimensionNames)
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throws IOException
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{
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Interval interval = config.getGranularitySpec().bucketInterval(bucket.time).get();
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int attemptNumber = context.getTaskAttemptID().getId();
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FileSystem fileSystem = FileSystem.get(context.getConfiguration());
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Path indexBasePath = config.makeSegmentOutputPath(fileSystem, bucket);
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Path indexZipFilePath = new Path(indexBasePath, String.format("index.zip.%s", attemptNumber));
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final FileSystem infoFS = config.makeDescriptorInfoDir().getFileSystem(context.getConfiguration());
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final FileSystem outputFS = indexBasePath.getFileSystem(context.getConfiguration());
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outputFS.mkdirs(indexBasePath);
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Exception caughtException = null;
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ZipOutputStream out = null;
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long size = 0;
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try {
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out = new ZipOutputStream(new BufferedOutputStream(outputFS.create(indexZipFilePath), 256 * 1024));
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List<String> filesToCopy = Arrays.asList(mergedBase.list());
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for (String file : filesToCopy) {
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size += copyFile(context, out, mergedBase, file);
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}
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}
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catch (Exception e) {
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caughtException = e;
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}
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finally {
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if (caughtException == null) {
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Closeables.close(out, false);
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} else {
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CloseQuietly.close(out);
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throw Throwables.propagate(caughtException);
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}
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}
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Path finalIndexZipFilePath = new Path(indexBasePath, "index.zip");
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final URI indexOutURI = finalIndexZipFilePath.toUri();
|
||||
ImmutableMap<String, Object> loadSpec;
|
||||
if (outputFS instanceof NativeS3FileSystem) {
|
||||
loadSpec = ImmutableMap.<String, Object>of(
|
||||
"type", "s3_zip",
|
||||
"bucket", indexOutURI.getHost(),
|
||||
"key", indexOutURI.getPath().substring(1) // remove the leading "/"
|
||||
);
|
||||
} else if (outputFS instanceof LocalFileSystem) {
|
||||
loadSpec = ImmutableMap.<String, Object>of(
|
||||
"type", "local",
|
||||
"path", indexOutURI.getPath()
|
||||
);
|
||||
} else if (outputFS instanceof DistributedFileSystem) {
|
||||
loadSpec = ImmutableMap.<String, Object>of(
|
||||
"type", "hdfs",
|
||||
"path", indexOutURI.getPath()
|
||||
);
|
||||
} else {
|
||||
throw new ISE("Unknown file system[%s]", outputFS.getClass());
|
||||
}
|
||||
|
||||
DataSegment segment = new DataSegment(
|
||||
config.getDataSource(),
|
||||
interval,
|
||||
config.getSchema().getTuningConfig().getVersion(),
|
||||
loadSpec,
|
||||
dimensionNames,
|
||||
metricNames,
|
||||
config.getShardSpec(bucket).getActualSpec(),
|
||||
SegmentUtils.getVersionFromDir(mergedBase),
|
||||
size
|
||||
);
|
||||
|
||||
// retry 1 minute
|
||||
boolean success = false;
|
||||
for (int i = 0; i < 6; i++) {
|
||||
if (renameIndexFiles(infoFS, outputFS, indexBasePath, indexZipFilePath, finalIndexZipFilePath, segment)) {
|
||||
log.info("Successfully renamed [%s] to [%s]", indexZipFilePath, finalIndexZipFilePath);
|
||||
success = true;
|
||||
break;
|
||||
} else {
|
||||
log.info("Failed to rename [%s] to [%s]", indexZipFilePath, finalIndexZipFilePath);
|
||||
try {
|
||||
Thread.sleep(10000);
|
||||
context.progress();
|
||||
}
|
||||
catch (InterruptedException e) {
|
||||
throw new ISE(
|
||||
"Thread error in retry loop for renaming [%s] to [%s]",
|
||||
indexZipFilePath.toUri().getPath(),
|
||||
finalIndexZipFilePath.toUri().getPath()
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (!success) {
|
||||
if (!outputFS.exists(indexZipFilePath)) {
|
||||
throw new ISE("File [%s] does not exist after retry loop.", indexZipFilePath.toUri().getPath());
|
||||
}
|
||||
|
||||
if (outputFS.getFileStatus(indexZipFilePath).getLen() == outputFS.getFileStatus(finalIndexZipFilePath)
|
||||
.getLen()) {
|
||||
outputFS.delete(indexZipFilePath, true);
|
||||
} else {
|
||||
outputFS.delete(finalIndexZipFilePath, true);
|
||||
if (!renameIndexFiles(infoFS, outputFS, indexBasePath, indexZipFilePath, finalIndexZipFilePath, segment)) {
|
||||
throw new ISE(
|
||||
"Files [%s] and [%s] are different, but still cannot rename after retry loop",
|
||||
indexZipFilePath.toUri().getPath(),
|
||||
finalIndexZipFilePath.toUri().getPath()
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private boolean renameIndexFiles(
|
||||
FileSystem intermediateFS,
|
||||
FileSystem outputFS,
|
||||
Path indexBasePath,
|
||||
Path indexZipFilePath,
|
||||
Path finalIndexZipFilePath,
|
||||
DataSegment segment
|
||||
)
|
||||
throws IOException
|
||||
{
|
||||
final boolean needRename;
|
||||
|
||||
if (outputFS.exists(finalIndexZipFilePath)) {
|
||||
// NativeS3FileSystem.rename won't overwrite, so we might need to delete the old index first
|
||||
final FileStatus zipFile = outputFS.getFileStatus(indexZipFilePath);
|
||||
final FileStatus finalIndexZipFile = outputFS.getFileStatus(finalIndexZipFilePath);
|
||||
|
||||
if (zipFile.getModificationTime() >= finalIndexZipFile.getModificationTime()
|
||||
|| zipFile.getLen() != finalIndexZipFile.getLen()) {
|
||||
log.info(
|
||||
"File[%s / %s / %sB] existed, but wasn't the same as [%s / %s / %sB]",
|
||||
finalIndexZipFile.getPath(),
|
||||
new DateTime(finalIndexZipFile.getModificationTime()),
|
||||
finalIndexZipFile.getLen(),
|
||||
zipFile.getPath(),
|
||||
new DateTime(zipFile.getModificationTime()),
|
||||
zipFile.getLen()
|
||||
);
|
||||
outputFS.delete(finalIndexZipFilePath, false);
|
||||
needRename = true;
|
||||
} else {
|
||||
log.info(
|
||||
"File[%s / %s / %sB] existed and will be kept",
|
||||
finalIndexZipFile.getPath(),
|
||||
new DateTime(finalIndexZipFile.getModificationTime()),
|
||||
finalIndexZipFile.getLen()
|
||||
);
|
||||
needRename = false;
|
||||
}
|
||||
} else {
|
||||
needRename = true;
|
||||
}
|
||||
|
||||
if (needRename && !outputFS.rename(indexZipFilePath, finalIndexZipFilePath)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
writeSegmentDescriptor(outputFS, segment, new Path(indexBasePath, "descriptor.json"));
|
||||
final Path descriptorPath = config.makeDescriptorInfoPath(segment);
|
||||
log.info("Writing descriptor to path[%s]", descriptorPath);
|
||||
intermediateFS.mkdirs(descriptorPath.getParent());
|
||||
writeSegmentDescriptor(intermediateFS, segment, descriptorPath);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
private void writeSegmentDescriptor(FileSystem outputFS, DataSegment segment, Path descriptorPath)
|
||||
throws IOException
|
||||
{
|
||||
if (outputFS.exists(descriptorPath)) {
|
||||
outputFS.delete(descriptorPath, false);
|
||||
}
|
||||
|
||||
final FSDataOutputStream descriptorOut = outputFS.create(descriptorPath);
|
||||
try {
|
||||
HadoopDruidIndexerConfig.jsonMapper.writeValue(descriptorOut, segment);
|
||||
}
|
||||
finally {
|
||||
descriptorOut.close();
|
||||
}
|
||||
}
|
||||
|
||||
private long copyFile(
|
||||
Context context, ZipOutputStream out, File mergedBase, final String filename
|
||||
) throws IOException
|
||||
{
|
||||
createNewZipEntry(out, filename);
|
||||
long numRead = 0;
|
||||
|
||||
InputStream in = null;
|
||||
try {
|
||||
in = new FileInputStream(new File(mergedBase, filename));
|
||||
byte[] buf = new byte[0x10000];
|
||||
int read;
|
||||
while (true) {
|
||||
read = in.read(buf);
|
||||
if (read == -1) {
|
||||
break;
|
||||
}
|
||||
|
||||
out.write(buf, 0, read);
|
||||
numRead += read;
|
||||
context.progress();
|
||||
}
|
||||
}
|
||||
finally {
|
||||
CloseQuietly.close(in);
|
||||
}
|
||||
out.closeEntry();
|
||||
context.progress();
|
||||
|
||||
return numRead;
|
||||
}
|
||||
|
||||
private IncrementalIndex makeIncrementalIndex(Bucket theBucket, AggregatorFactory[] aggs)
|
||||
{
|
||||
return new IncrementalIndex(
|
||||
new IncrementalIndexSchema.Builder()
|
||||
.withMinTimestamp(theBucket.time.getMillis())
|
||||
.withDimensionsSpec(config.getSchema().getDataSchema().getParser())
|
||||
.withQueryGranularity(config.getSchema().getDataSchema().getGranularitySpec().getQueryGranularity())
|
||||
.withMetrics(aggs)
|
||||
.build(),
|
||||
new OffheapBufferPool(config.getSchema().getTuningConfig().getBufferSize())
|
||||
);
|
||||
}
|
||||
|
||||
private void createNewZipEntry(ZipOutputStream out, String name) throws IOException
|
||||
{
|
||||
log.info("Creating new ZipEntry[%s]", name);
|
||||
out.putNextEntry(new ZipEntry(name));
|
||||
}
|
||||
}
|
||||
|
||||
public static class IndexGeneratorOutputFormat extends TextOutputFormat
|
||||
{
|
||||
@Override
|
||||
public void checkOutputSpecs(JobContext job) throws IOException
|
||||
{
|
||||
Path outDir = getOutputPath(job);
|
||||
if (outDir == null) {
|
||||
throw new InvalidJobConfException("Output directory not set.");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
public static class IndexGeneratorStats
|
||||
{
|
||||
private long invalidRowCount = 0;
|
||||
|
||||
public long getInvalidRowCount()
|
||||
{
|
||||
return invalidRowCount;
|
||||
}
|
||||
|
||||
public void setInvalidRowCount(long invalidRowCount)
|
||||
{
|
||||
this.invalidRowCount = invalidRowCount;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -350,7 +350,7 @@ public class TaskSerdeTest
|
|||
null,
|
||||
null,
|
||||
new HadoopIngestionSpec(
|
||||
null, null, null,
|
||||
null, null, null, false, // TODO
|
||||
"foo",
|
||||
new TimestampSpec("timestamp", "auto"),
|
||||
new JSONDataSpec(ImmutableList.of("foo"), null),
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,145 @@
|
|||
/*
|
||||
* Druid - a distributed column store.
|
||||
* Copyright (C) 2012, 2013 Metamarkets Group Inc.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License
|
||||
* as published by the Free Software Foundation; either version 2
|
||||
* of the License, or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
||||
*/
|
||||
|
||||
package io.druid.segment.data;
|
||||
|
||||
import com.google.common.base.Function;
|
||||
import com.google.common.base.Preconditions;
|
||||
import com.google.common.collect.Iterables;
|
||||
import com.google.common.io.ByteStreams;
|
||||
import com.google.common.io.Closeables;
|
||||
import com.google.common.io.CountingOutputStream;
|
||||
import com.google.common.io.InputSupplier;
|
||||
import com.google.common.primitives.Ints;
|
||||
|
||||
import java.io.Closeable;
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
import java.io.OutputStream;
|
||||
import java.util.Arrays;
|
||||
import java.util.List;
|
||||
|
||||
/**
|
||||
* Streams arrays of objects out in the binary format described by VSizeIndexed
|
||||
*/
|
||||
public class VSizeIndexedWriter implements Closeable
|
||||
{
|
||||
private static final byte version = 0x1;
|
||||
private static final byte[] EMPTY_ARRAY = new byte[]{};
|
||||
|
||||
private final int maxId;
|
||||
|
||||
private CountingOutputStream headerOut = null;
|
||||
private CountingOutputStream valuesOut = null;
|
||||
int numWritten = 0;
|
||||
private final IOPeon ioPeon;
|
||||
private final String filenameBase;
|
||||
|
||||
public VSizeIndexedWriter(
|
||||
IOPeon ioPeon,
|
||||
String filenameBase,
|
||||
int maxId
|
||||
)
|
||||
{
|
||||
this.ioPeon = ioPeon;
|
||||
this.filenameBase = filenameBase;
|
||||
this.maxId = maxId;
|
||||
}
|
||||
|
||||
public void open() throws IOException
|
||||
{
|
||||
headerOut = new CountingOutputStream(ioPeon.makeOutputStream(makeFilename("header")));
|
||||
valuesOut = new CountingOutputStream(ioPeon.makeOutputStream(makeFilename("values")));
|
||||
}
|
||||
|
||||
public void write(List<Integer> ints) throws IOException
|
||||
{
|
||||
byte[] bytesToWrite = ints == null ? EMPTY_ARRAY : VSizeIndexedInts.fromList(ints, maxId).getBytesNoPadding();
|
||||
|
||||
valuesOut.write(bytesToWrite);
|
||||
|
||||
headerOut.write(Ints.toByteArray((int) valuesOut.getCount()));
|
||||
|
||||
++numWritten;
|
||||
}
|
||||
|
||||
private String makeFilename(String suffix)
|
||||
{
|
||||
return String.format("%s.%s", filenameBase, suffix);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void close() throws IOException
|
||||
{
|
||||
final byte numBytesForMax = VSizeIndexedInts.getNumBytesForMax(maxId);
|
||||
|
||||
valuesOut.write(new byte[4 - numBytesForMax]);
|
||||
|
||||
Closeables.close(headerOut, false);
|
||||
Closeables.close(valuesOut, false);
|
||||
|
||||
final long numBytesWritten = headerOut.getCount() + valuesOut.getCount();
|
||||
|
||||
Preconditions.checkState(
|
||||
headerOut.getCount() == (numWritten * 4),
|
||||
"numWritten[%s] number of rows should have [%s] bytes written to headerOut, had[%s]",
|
||||
numWritten,
|
||||
numWritten * 4,
|
||||
headerOut.getCount()
|
||||
);
|
||||
Preconditions.checkState(
|
||||
numBytesWritten < Integer.MAX_VALUE, "Wrote[%s] bytes, which is too many.", numBytesWritten
|
||||
);
|
||||
|
||||
OutputStream metaOut = ioPeon.makeOutputStream(makeFilename("meta"));
|
||||
|
||||
try {
|
||||
metaOut.write(new byte[]{version, numBytesForMax});
|
||||
metaOut.write(Ints.toByteArray((int) numBytesWritten + 4));
|
||||
metaOut.write(Ints.toByteArray(numWritten));
|
||||
}
|
||||
finally {
|
||||
metaOut.close();
|
||||
}
|
||||
}
|
||||
|
||||
public InputSupplier<InputStream> combineStreams()
|
||||
{
|
||||
return ByteStreams.join(
|
||||
Iterables.transform(
|
||||
Arrays.asList("meta", "header", "values"),
|
||||
new Function<String,InputSupplier<InputStream>>() {
|
||||
|
||||
@Override
|
||||
public InputSupplier<InputStream> apply(final String input)
|
||||
{
|
||||
return new InputSupplier<InputStream>()
|
||||
{
|
||||
@Override
|
||||
public InputStream getInput() throws IOException
|
||||
{
|
||||
return ioPeon.makeInputStream(makeFilename(input));
|
||||
}
|
||||
};
|
||||
}
|
||||
}
|
||||
)
|
||||
);
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue