[
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)
