DefaultExecutorServiceFactory.java

// Licensed to the Apache Software Foundation (ASF) under one
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// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
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//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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//
// Copied from
// https://github.com/awslabs/aws-glue-data-catalog-client-for-apache-hive-metastore/blob/branch-3.4.0/
//

package com.amazonaws.glue.catalog.metastore;

import com.google.common.util.concurrent.ThreadFactoryBuilder;
import org.apache.hadoop.conf.Configuration;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class DefaultExecutorServiceFactory implements ExecutorServiceFactory {
    private static final int NUM_EXECUTOR_THREADS = 5;

    private static final ExecutorService GLUE_METASTORE_DELEGATE_THREAD_POOL = Executors.newFixedThreadPool(
            NUM_EXECUTOR_THREADS, new ThreadFactoryBuilder()
                    .setNameFormat(GlueMetastoreClientDelegate.GLUE_METASTORE_DELEGATE_THREADPOOL_NAME_FORMAT)
                    .setDaemon(true).build()
    );

    @Override
    public ExecutorService getExecutorService(Configuration conf) {
        return GLUE_METASTORE_DELEGATE_THREAD_POOL;
    }
}