/// <exception cref="System.IO.IOException"/>
public KeySampler(Random random, RawComparable first, RawComparable last, RandomDistribution.DiscreteRNG
keyLenRNG)
{
this.random = random;
min = KeyPrefixToInt(first);
max = KeyPrefixToInt(last);
this.keyLenRNG = keyLenRNG;
}
public KVGenerator(Random random, bool sorted, RandomDistribution.DiscreteRNG keyLenRNG
, RandomDistribution.DiscreteRNG valLenRNG, RandomDistribution.DiscreteRNG wordLenRNG
, int dictSize)
{
this.random = random;
dict = new byte[dictSize][];
this.sorted = sorted;
this.keyLenRNG = keyLenRNG;
this.valLenRNG = valLenRNG;
for (int i = 0; i < dictSize; ++i)
{
int wordLen = wordLenRNG.NextInt();
dict[i] = new byte[wordLen];
random.NextBytes(dict[i]);
}
lastKey = new BytesWritable();
FillKey(lastKey);
}
/// <exception cref="System.IO.IOException"/>
protected override void SetUp()
{
if (options == null)
{
options = new TestTFileSeek.MyOptions(new string[0]);
}
conf = new Configuration();
conf.SetInt("tfile.fs.input.buffer.size", options.fsInputBufferSize);
conf.SetInt("tfile.fs.output.buffer.size", options.fsOutputBufferSize);
path = new Path(new Path(options.rootDir), options.file);
fs = path.GetFileSystem(conf);
timer = new NanoTimer(false);
rng = new Random(options.seed);
keyLenGen = new RandomDistribution.Zipf(new Random(rng.NextLong()), options.minKeyLen
, options.maxKeyLen, 1.2);
RandomDistribution.DiscreteRNG valLenGen = new RandomDistribution.Flat(new Random
(rng.NextLong()), options.minValLength, options.maxValLength);
RandomDistribution.DiscreteRNG wordLenGen = new RandomDistribution.Flat(new Random
(rng.NextLong()), options.minWordLen, options.maxWordLen);
kvGen = new KVGenerator(rng, true, keyLenGen, valLenGen, wordLenGen, options.dictSize
);
}
