Pipeline close hangs if one of the datanode is not responsive.
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Key: HDFS-724
URL: https://issues.apache.org/jira/browse/HDFS-724
Project: Hadoop HDFS
Issue Type: Bug
Components: data-node, hdfs client
Reporter: Tsz Wo (Nicholas), SZE
In the new pipeline design, pipeline close is implemented by sending an
additional empty packet. If one of the datanode does not response to this
empty packet, the pipeline hangs. It seems that there is no timeout.
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