com.facebook.hiveio.output.PerThread.java Source code

Introduction

Here is the source code for com.facebook.hiveio.output.PerThread.java

Source

/*
 * 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 com.facebook.hiveio.output;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.mapred.HackJobContext;
import org.apache.hadoop.mapred.HackTaskAttemptContext;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.JobContext;
import org.apache.hadoop.mapred.TaskAttemptContext;
import org.apache.hadoop.mapred.TaskAttemptID;
import org.apache.hadoop.mapreduce.JobID;

import com.facebook.hiveio.common.HiveUtils;

/**
 * Per-Thread context for thread-safety.
 */
class PerThread {
    // CHECKSTYLE: stop VisibilityModifier
    /** Configuration */
    public final Configuration conf;
    /** task id */
    public final TaskAttemptID taskID;
    // CHECKSTYLE: resume VisibilityModifier

    /**
     * Constructor
     *
     * @param conf Configuration
     */
    public PerThread(Configuration conf) {
        this.conf = HiveUtils.newHiveConf(conf, OutputCmd.class);
        this.taskID = new TaskAttemptID("hiveio_output", 42, true, (int) Thread.currentThread().getId(), 0);
    }

    /**
     * Get task context
     *
     * @return task context
     */
    public TaskAttemptContext taskContext() {
        return new HackTaskAttemptContext(new JobConf(conf), taskID);
    }

    /**
     * Get JobID
     *
     * @return JobID
     */
    public JobID jobID() {
        return taskID.getJobID();
    }

    /**
     * Get JobConf
     *
     * @return JobConf
     */
    public JobConf jobConf() {
        return new JobConf(conf);
    }

    /**
     * Get JobContext
     *
     * @return JobContext
     */
    public JobContext jobContext() {
        return new HackJobContext(jobConf(), jobID());
    }
}