Constructor Detail

• LoadTestKVGenerator

  public LoadTestKVGenerator(int minValueSize,
                     int maxValueSize)

Method Detail

• verify

  public static boolean verify(byte[] value,
               byte[]... seedStrings)

  Verifies that the given byte array is the same as what would be generated for the given seed strings (row/cf/column/...). We are assuming that the value size is correct, and only verify the actual bytes. However, if the min/max value sizes are set sufficiently high, an accidental match should be extremely improbable.

• md5PrefixedKey

  public static String md5PrefixedKey(long key)

  Converts the given key to string, and prefixes it with the MD5 hash of the index's string representation.

• generateRandomSizeValue

  public byte[] generateRandomSizeValue(byte[]... seedStrings)

  Generates a value for the given key index and column qualifier. Size is selected randomly in the configured range. The generated value depends only on the combination of the strings passed (key/cf/column/...) and the selected value size. This allows to verify the actual value bytes when reading, as done in {#verify(byte[], byte[]...)} This method is as thread-safe as Random class. It appears that the worst bug ever found with the latter is that multiple threads will get some duplicate values, which we don't care about.