Package org.apache.hadoop.hdfs.server.datanode

Examples of org.apache.hadoop.hdfs.server.datanode.BlockTransferThrottler.throttle()

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    long bytesToSend = TOTAL_BYTES;
    long start = Util.now();
    BlockTransferThrottler throttler = new BlockTransferThrottler(bandwidthPerSec);
    long totalBytes = 0L;
    long bytesSent = 1024*512L; // 0.5MB
    throttler.throttle(bytesSent);
    bytesToSend -= bytesSent;
    bytesSent = 1024*768L; // 0.75MB
    throttler.throttle(bytesSent);
    bytesToSend -= bytesSent;
    try {
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    long totalBytes = 0L;
    long bytesSent = 1024*512L; // 0.5MB
    throttler.throttle(bytesSent);
    bytesToSend -= bytesSent;
    bytesSent = 1024*768L; // 0.75MB
    throttler.throttle(bytesSent);
    bytesToSend -= bytesSent;
    try {
      Thread.sleep(1000);
    } catch (InterruptedException ignored) {}
    throttler.throttle(bytesToSend);
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    throttler.throttle(bytesSent);
    bytesToSend -= bytesSent;
    try {
      Thread.sleep(1000);
    } catch (InterruptedException ignored) {}
    throttler.throttle(bytesToSend);
    long end = Util.now();
    assertTrue(totalBytes*1000/(end-start)<=bandwidthPerSec);
  }
 
  public void testBlockReplacement() throws IOException {
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    long bytesToSend = TOTAL_BYTES;
    long start = Util.now();
    BlockTransferThrottler throttler = new BlockTransferThrottler(bandwidthPerSec);
    long totalBytes = 0L;
    long bytesSent = 1024*512L; // 0.5MB
    throttler.throttle(bytesSent);
    bytesToSend -= bytesSent;
    bytesSent = 1024*768L; // 0.75MB
    throttler.throttle(bytesSent);
    bytesToSend -= bytesSent;
    try {
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    long totalBytes = 0L;
    long bytesSent = 1024*512L; // 0.5MB
    throttler.throttle(bytesSent);
    bytesToSend -= bytesSent;
    bytesSent = 1024*768L; // 0.75MB
    throttler.throttle(bytesSent);
    bytesToSend -= bytesSent;
    try {
      Thread.sleep(1000);
    } catch (InterruptedException ignored) {}
    throttler.throttle(bytesToSend);
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    throttler.throttle(bytesSent);
    bytesToSend -= bytesSent;
    try {
      Thread.sleep(1000);
    } catch (InterruptedException ignored) {}
    throttler.throttle(bytesToSend);
    long end = Util.now();
    assertTrue(totalBytes*1000/(end-start)<=bandwidthPerSec);
  }
 
  public void testBlockReplacement() throws IOException {
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