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From "Gary Helmling (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Deleted] (HDFS-9805) TCP_NODELAY not set before SASL handshake in data transfer pipeline
Date Mon, 06 Jun 2016 16:52:21 GMT

     [ https://issues.apache.org/jira/browse/HDFS-9805?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gary Helmling updated HDFS-9805:
--------------------------------
    Comment: was deleted

(was: [~jojochuang], I have a version that adds in the config already.  I'll take a stab at
the unit test and post an update tomorrow.)

> TCP_NODELAY not set before SASL handshake in data transfer pipeline
> -------------------------------------------------------------------
>
>                 Key: HDFS-9805
>                 URL: https://issues.apache.org/jira/browse/HDFS-9805
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>            Reporter: Gary Helmling
>            Assignee: Gary Helmling
>         Attachments: HDFS-9805.002.patch, HDFS-9805.003.patch
>
>
> There are a few places in the DN -> DN block transfer pipeline where TCP_NODELAY is
not set before doing a SASL handshake:
> * in {{DataNode.DataTransfer::run()}}
> * in {{DataXceiver::replaceBlock()}}
> * in {{DataXceiver::writeBlock()}}



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