[jira] [Created] (HIVE-19395) OutStream.write hangs with misconfigured bufferSize

["John Doe (JIRA)" <ji...@apache.org>]

John Doe created HIVE-19395:
-------------------------------

             Summary: OutStream.write hangs with misconfigured bufferSize
                 Key: HIVE-19395
                 URL: https://issues.apache.org/jira/browse/HIVE-19395
             Project: Hive
          Issue Type: Bug
          Components: SQL
    Affects Versions: 1.0.0
            Reporter: John Doe


When the bufferSize is configured to be 0 in the class initialization, the while loop in OutStream.write function hangs endlessly.
This is because when the bufferSize is 0, current.remaining is 0, length will always > 0.
Here is the code snippet.
{code:java}
   OutStream(String name, int bufferSize, CompressionCodec codec, OutputReceiver receiver) throws IOException {
    ...
    this.bufferSize = bufferSize; //bufferSize can be configured with 0
    ...
  }

    private void getNewInputBuffer() throws IOException {
      ...
      current = ByteBuffer.allocate(bufferSize);
      ...
  }

  public void write(byte[] bytes, int offset, int length) throws IOException {
    if (current == null) {
      getNewInputBuffer();
    }
    int remaining = Math.min(current.remaining(), length);
    current.put(bytes, offset, remaining);
    uncompressedBytes += remaining;
    length -= remaining;
    while (length != 0) {//length > 0
      spill();
      offset += remaining;
      remaining = Math.min(current.remaining(), length);//current.remaining() == 0
      current.put(bytes, offset, remaining);
      uncompressedBytes += remaining;
      length -= remaining;
    }
  }
{code}
The similar case is [HDFS-13513|https://issues.apache.org/jira/browse/HDFS-13513], [HDFS-13514|https://issues.apache.org/jira/browse/HDFS-13514]



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