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Refactored SparkSegmentMetadataPushJob
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115
.../pinot/plugin/ingestion/batch/spark/common/AbstractSparkSegmentMetadataPushJobRunner.java
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| /** | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF 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.apache.pinot.plugin.ingestion.batch.spark.common; | ||
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| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.io.Serializable; | ||
| import java.net.URI; | ||
| import java.net.URISyntaxException; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import org.apache.pinot.segment.local.utils.SegmentPushUtils; | ||
| import org.apache.pinot.spi.env.PinotConfiguration; | ||
| import org.apache.pinot.spi.filesystem.PinotFS; | ||
| import org.apache.pinot.spi.filesystem.PinotFSFactory; | ||
| import org.apache.pinot.spi.ingestion.batch.runner.IngestionJobRunner; | ||
| import org.apache.pinot.spi.ingestion.batch.spec.Constants; | ||
| import org.apache.pinot.spi.ingestion.batch.spec.PinotFSSpec; | ||
| import org.apache.pinot.spi.ingestion.batch.spec.SegmentGenerationJobSpec; | ||
| import org.apache.pinot.spi.utils.retry.AttemptsExceededException; | ||
| import org.apache.pinot.spi.utils.retry.RetriableOperationException; | ||
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| public abstract class AbstractSparkSegmentMetadataPushJobRunner implements IngestionJobRunner, Serializable { | ||
| protected SegmentGenerationJobSpec _spec; | ||
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| public AbstractSparkSegmentMetadataPushJobRunner() { | ||
| } | ||
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| public AbstractSparkSegmentMetadataPushJobRunner(SegmentGenerationJobSpec spec) { | ||
| init(spec); | ||
| } | ||
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| @Override | ||
| public void init(SegmentGenerationJobSpec spec) { | ||
| _spec = spec; | ||
| } | ||
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| @Override | ||
| public void run() { | ||
| //init all file systems | ||
| List<PinotFSSpec> pinotFSSpecs = _spec.getPinotFSSpecs(); | ||
| for (PinotFSSpec pinotFSSpec : pinotFSSpecs) { | ||
| PinotFSFactory.register(pinotFSSpec.getScheme(), pinotFSSpec.getClassName(), new PinotConfiguration(pinotFSSpec)); | ||
| } | ||
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| //Get outputFS for writing output pinot segments | ||
| URI outputDirURI; | ||
| try { | ||
| outputDirURI = new URI(_spec.getOutputDirURI()); | ||
| if (outputDirURI.getScheme() == null) { | ||
| outputDirURI = new File(_spec.getOutputDirURI()).toURI(); | ||
| } | ||
| } catch (URISyntaxException e) { | ||
| throw new RuntimeException("outputDirURI is not valid - '" + _spec.getOutputDirURI() + "'"); | ||
| } | ||
| PinotFS outputDirFS = PinotFSFactory.create(outputDirURI.getScheme()); | ||
| //Get list of files to process | ||
| String[] files; | ||
| try { | ||
| files = outputDirFS.listFiles(outputDirURI, true); | ||
| } catch (IOException e) { | ||
| throw new RuntimeException("Unable to list all files under outputDirURI - '" + outputDirURI + "'"); | ||
| } | ||
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| List<String> segmentsToPush = new ArrayList<>(); | ||
| for (String file : files) { | ||
| if (file.endsWith(Constants.TAR_GZ_FILE_EXT)) { | ||
| segmentsToPush.add(file); | ||
| } | ||
| } | ||
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| int pushParallelism = _spec.getPushJobSpec().getPushParallelism(); | ||
| if (pushParallelism < 1) { | ||
| pushParallelism = segmentsToPush.size(); | ||
| } | ||
| if (pushParallelism == 1) { | ||
| // Push from driver | ||
| try { | ||
| SegmentPushUtils.pushSegments(_spec, outputDirFS, segmentsToPush); | ||
| } catch (RetriableOperationException | AttemptsExceededException e) { | ||
| throw new RuntimeException(e); | ||
| } | ||
| } else { | ||
| parallelizeMetadataPushJob(segmentsToPush, pinotFSSpecs, pushParallelism, outputDirURI); | ||
| } | ||
| } | ||
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| /** | ||
| * Parallelizes the metadata push job using Spark to distribute the work across multiple nodes. | ||
| * | ||
| * @param segmentsToPush the list of segment URIs to be pushed | ||
| * @param pinotFSSpecs the list of Pinot file system specifications to be registered | ||
| * @param pushParallelism the level of parallelism for the push job | ||
| * @param outputDirURI the URI of the output directory containing the segments | ||
| */ | ||
| public abstract void parallelizeMetadataPushJob(List<String> segmentsToPush, List<PinotFSSpec> pinotFSSpecs, | ||
| int pushParallelism, URI outputDirURI); | ||
| } |
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