hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9805) TCP_NODELAY not set before SASL handshake in data transfer pipeline
Date Fri, 01 Apr 2016 22:55:25 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9805?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15222483#comment-15222483
] 

Colin Patrick McCabe commented on HDFS-9805:
--------------------------------------------

Hi [~ghelmling],

Thanks for looking at this.  However, it seems like we should be checking to see if {{ipc.server.tcpnodelay}}
is true rather than unconditionally setting {{TCP_NODELAY}}.

> 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()}}



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message