Java Code Examples for org.apache.hadoop.hdfs.protocol.datatransfer.PipelineAck#getStatusFromHeader()

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Example 1
Source File: FanOutOneBlockAsyncDFSOutputHelper.java    From hbase with Apache License 2.0 5 votes vote down vote up 
static Status getStatus(PipelineAckProto ack) {
  List<Integer> flagList = ack.getFlagList();
  Integer headerFlag;
  if (flagList.isEmpty()) {
    Status reply = ack.getReply(0);
    headerFlag = PipelineAck.combineHeader(ECN.DISABLED, reply);
  } else {
    headerFlag = flagList.get(0);
  }
  return PipelineAck.getStatusFromHeader(headerFlag);
}
Example 2
Source File: BlockReceiver.java    From hadoop with Apache License 2.0 4 votes vote down vote up 
/**
 * @param ack Ack received from downstream
 * @param seqno sequence number of ack to be sent upstream
 * @param totalAckTimeNanos total ack time including all the downstream
 *          nodes
 * @param offsetInBlock offset in block for the data in packet
 * @param myHeader the local ack header
 */
private void sendAckUpstreamUnprotected(PipelineAck ack, long seqno,
    long totalAckTimeNanos, long offsetInBlock, int myHeader)
    throws IOException {
  final int[] replies;
  if (ack == null) {
    // A new OOB response is being sent from this node. Regardless of
    // downstream nodes, reply should contain one reply.
    replies = new int[] { myHeader };
  } else if (mirrorError) { // ack read error
    int h = PipelineAck.combineHeader(datanode.getECN(), Status.SUCCESS);
    int h1 = PipelineAck.combineHeader(datanode.getECN(), Status.ERROR);
    replies = new int[] {h, h1};
  } else {
    short ackLen = type == PacketResponderType.LAST_IN_PIPELINE ? 0 : ack
        .getNumOfReplies();
    replies = new int[ackLen + 1];
    replies[0] = myHeader;
    for (int i = 0; i < ackLen; ++i) {
      replies[i + 1] = ack.getHeaderFlag(i);
    }
    // If the mirror has reported that it received a corrupt packet,
    // do self-destruct to mark myself bad, instead of making the
    // mirror node bad. The mirror is guaranteed to be good without
    // corrupt data on disk.
    if (ackLen > 0 && PipelineAck.getStatusFromHeader(replies[1]) ==
      Status.ERROR_CHECKSUM) {
      throw new IOException("Shutting down writer and responder "
          + "since the down streams reported the data sent by this "
          + "thread is corrupt");
    }
  }
  PipelineAck replyAck = new PipelineAck(seqno, replies,
      totalAckTimeNanos);
  if (replyAck.isSuccess()
      && offsetInBlock > replicaInfo.getBytesAcked()) {
    replicaInfo.setBytesAcked(offsetInBlock);
  }
  // send my ack back to upstream datanode
  long begin = Time.monotonicNow();
  replyAck.write(upstreamOut);
  upstreamOut.flush();
  long duration = Time.monotonicNow() - begin;
  if (duration > datanodeSlowLogThresholdMs) {
    LOG.warn("Slow PacketResponder send ack to upstream took " + duration
        + "ms (threshold=" + datanodeSlowLogThresholdMs + "ms), " + myString
        + ", replyAck=" + replyAck);
  } else if (LOG.isDebugEnabled()) {
    LOG.debug(myString + ", replyAck=" + replyAck);
  }

  // If a corruption was detected in the received data, terminate after
  // sending ERROR_CHECKSUM back.
  Status myStatus = PipelineAck.getStatusFromHeader(myHeader);
  if (myStatus == Status.ERROR_CHECKSUM) {
    throw new IOException("Shutting down writer and responder "
        + "due to a checksum error in received data. The error "
        + "response has been sent upstream.");
  }
}
Example 3
Source File: BlockReceiver.java    From big-c with Apache License 2.0 4 votes vote down vote up 
/**
 * @param ack Ack received from downstream
 * @param seqno sequence number of ack to be sent upstream
 * @param totalAckTimeNanos total ack time including all the downstream
 *          nodes
 * @param offsetInBlock offset in block for the data in packet
 * @param myHeader the local ack header
 */
private void sendAckUpstreamUnprotected(PipelineAck ack, long seqno,
    long totalAckTimeNanos, long offsetInBlock, int myHeader)
    throws IOException {
  final int[] replies;
  if (ack == null) {
    // A new OOB response is being sent from this node. Regardless of
    // downstream nodes, reply should contain one reply.
    replies = new int[] { myHeader };
  } else if (mirrorError) { // ack read error
    int h = PipelineAck.combineHeader(datanode.getECN(), Status.SUCCESS);
    int h1 = PipelineAck.combineHeader(datanode.getECN(), Status.ERROR);
    replies = new int[] {h, h1};
  } else {
    short ackLen = type == PacketResponderType.LAST_IN_PIPELINE ? 0 : ack
        .getNumOfReplies();
    replies = new int[ackLen + 1];
    replies[0] = myHeader;
    for (int i = 0; i < ackLen; ++i) {
      replies[i + 1] = ack.getHeaderFlag(i);
    }
    // If the mirror has reported that it received a corrupt packet,
    // do self-destruct to mark myself bad, instead of making the
    // mirror node bad. The mirror is guaranteed to be good without
    // corrupt data on disk.
    if (ackLen > 0 && PipelineAck.getStatusFromHeader(replies[1]) ==
      Status.ERROR_CHECKSUM) {
      throw new IOException("Shutting down writer and responder "
          + "since the down streams reported the data sent by this "
          + "thread is corrupt");
    }
  }
  PipelineAck replyAck = new PipelineAck(seqno, replies,
      totalAckTimeNanos);
  if (replyAck.isSuccess()
      && offsetInBlock > replicaInfo.getBytesAcked()) {
    replicaInfo.setBytesAcked(offsetInBlock);
  }
  // send my ack back to upstream datanode
  long begin = Time.monotonicNow();
  replyAck.write(upstreamOut);
  upstreamOut.flush();
  long duration = Time.monotonicNow() - begin;
  if (duration > datanodeSlowLogThresholdMs) {
    LOG.warn("Slow PacketResponder send ack to upstream took " + duration
        + "ms (threshold=" + datanodeSlowLogThresholdMs + "ms), " + myString
        + ", replyAck=" + replyAck);
  } else if (LOG.isDebugEnabled()) {
    LOG.debug(myString + ", replyAck=" + replyAck);
  }

  // If a corruption was detected in the received data, terminate after
  // sending ERROR_CHECKSUM back.
  Status myStatus = PipelineAck.getStatusFromHeader(myHeader);
  if (myStatus == Status.ERROR_CHECKSUM) {
    throw new IOException("Shutting down writer and responder "
        + "due to a checksum error in received data. The error "
        + "response has been sent upstream.");
  }
}