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From xiaohe lan <zombiexco...@gmail.com>
Subject How the ack sent back to upstream of a pipeline when write data to HDFS
Date Fri, 13 Mar 2015 11:55:53 GMT
Hi experts,

When HDFS client sends a packet of data to a DN in the pipeline, the packet
will then be sent to the next DN in the pipeline. What confuses me is when
the ack from a DN in the pipeline will be sent back ? In which order ? It
is sent from the last to first or in other ways ?

Thanks,
Xiaohe

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