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https://issues.apache.org/jira/browse/HDFS-13248?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16809478#comment-16809478
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He Xiaoqiao commented on HDFS-13248:
------------------------------------
Thanks [~elgoiri], [~ayushtkn]
To [~elgoiri],
{quote}we need a full design docs.{quote}
Correct, design docs will attach later. I am not very familiar with solution
`modifying the RPC protocol`, anyone would like to explain will very helpful.
To [~ayushtkn],
{quote}Saw this getAdditionalDatanode() having client name parameter in(need to
dig in more) Wouldn't that work for us?{quote}
Parameter #clientName about {{getAdditionalDatanode}} just a name tag and do
not include any hostname/IP unless we change it.
{code:java}
this.clientName = "DFSClient_" + dfsClientConf.getTaskId() + "_" +
ThreadLocalRandom.current().nextInt() + "_" +
Thread.currentThread().getId();
{code}
{quote}Do we need to do with scenarios like HBASE-22103?{quote}
If extend protocol, we need compatible with all current interface.
Please correct if something wrong.
> 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, HDFS-13248.003.patch, HDFS-13248.004.patch,
> HDFS-13248.005.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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