ArrayFileTest.py

#!/usr/bin/env python
# ========================================================================
# 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
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from hadoop.io.IntWritable import LongWritable, IntWritable
from hadoop.io import ArrayFile

if __name__ == '__main__':
    writer = ArrayFile.Writer('array-test', IntWritable)
    writer.INDEX_INTERVAL = 16
    for i in range(0, 100):
        writer.append(IntWritable(1 + i * 10))
    writer.close()

    key = LongWritable()
    value = IntWritable()
    reader = ArrayFile.Reader('array-test')
    while reader.next(key, value):
        print(key, value)

    print('GET 8')
    print(reader.get(8, value))
    print(value)
    print()

    print('GET 110')
    print(reader.get(110, value))
    print()

    print('GET 25')
    print(reader.get(25, value))
    print(value)
    print()

    print('GET 55')
    print(reader.get(55, value))
    print(value)
    print()

    reader.close()