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https://issues.apache.org/jira/browse/HDFS-13248?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16628461#comment-16628461
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Fei Hui commented on HDFS-13248:
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{quote}
How does the rack locality and so on work in this case? Would it try to place
it in the rack itself?
{quote}
Client node is 10.83.79.39, and it is on the same rack with 10.83.79.36.
Pipeline log is following
{quote}
2018-09-25 20:06:18,268 INFO org.apache.hadoop.hdfs.server.datanode.DataNode:
Receiving BP-158347504-10.83.62.66-1508752583786:blk_1101953203_28301053 src:
/10.83.79.39:55362 dest: /10.83.79.39:50010
2018-09-25 20:06:18,271 INFO org.apache.hadoop.hdfs.server.datanode.DataNode:
Receiving BP-158347504-10.83.62.66-1508752583786:blk_1101953203_28301053 src:
/10.83.79.39:35082 dest: /10.83.79.36:50010
2018-09-25 20:06:18,272 INFO org.apache.hadoop.hdfs.server.datanode.DataNode:
Receiving BP-158347504-10.83.62.66-1508752583786:blk_1101953203_28301053 src:
/10.83.79.36:58584 dest: /10.83.78.57:50010
{quote}
> RBF: Namenode need to choose block location for the client
> ----------------------------------------------------------
>
> Key: HDFS-13248
> URL: https://issues.apache.org/jira/browse/HDFS-13248
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Weiwei Wu
> Assignee: Íñigo Goiri
> Priority: Major
> Attachments: HDFS-13248.000.patch, HDFS-13248.001.patch,
> HDFS-13248.002.patch, clientMachine-call-path.jpeg, debug-info-1.jpeg,
> debug-info-2.jpeg
>
>
> When execute a put operation via router, the NameNode will choose block
> location for the router, not for the real client. This will affect the file's
> locality.
> I think on both NameNode and Router, we should add a new addBlock method, or
> add a parameter for the current addBlock method, to pass the real client
> information.
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