[
https://issues.apache.org/jira/browse/SPARK-21701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16123096#comment-16123096
]
Xu Zhang edited comment on SPARK-21701 at 8/11/17 9:53 AM:
-----------------------------------------------------------
Hi Sean,
Thanks for your quick response. SO_RCVBUF and SO_SNDBUF are for TCP, and in
server side, the two parameters are specified in
{code:java}
org.apache.spark.network.server.TransportServer
{code}
through SparkConf. If server side specify a bigger SO_RCVBUF size, while client
does not have any place to set the corresponding SO_SNDBUF param (although we
can set the value in OS, if no set, use default value), then peers may use a
relatively small "sliding window" for later communication. Thus the param set
in SparkConf does not take effect in transport phase as expected. To achieve
consistency in both client and server side, enable client to get these params
from SparkConf would make sense. Moreover, due to the fact that spark RPC
module is not for high throughput and performant C/S service system, it should
not to be a big problem, so I set the ticket to improvement label.
In a word, my point is it would be better to keep an entrance to the outside
world to set these params in client side and keep consistent with how server
side specifies these params.
Thanks
was (Author: xu.zhang):
Hi Sean,
Thanks for your quick response. SO_RCVBUF and SO_SNDBUF are for TCP, and in
server side, the two parameters are specified in
{code:java}
org.apache.spark.network.server.TransportServer
{code}
through SparkConf. If server side specify a bigger SO_RCVBUF size, while client
does not have any place to set the corresponding param (although we can set the
value in OS, if no set, use default value), then peers may set a relatively
small sliding window size for later communication. Thus the param set in
SparkConf in server side does not take effect in transport phase as expected.
To achieve consistency in both client and server side, enable client to get
these params from SparkConf would make sense. Moreover, due to the fact that
spark RPC module is not for high throughput and performant C/S service system,
it should not to be a big problem, so I set the ticket to improvement label.
In a word, my point is it would be better to keep an entrance to the outside
world to set these params in client side and keep consistent with how server
side specifies these params.
Thanks
> Add TCP send/rcv buffer size support for RPC client
> ---------------------------------------------------
>
> Key: SPARK-21701
> URL: https://issues.apache.org/jira/browse/SPARK-21701
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 1.6.0
> Reporter: Xu Zhang
> Priority: Trivial
>
> For TransportClientFactory class, there are no params derived from SparkConf
> to set ChannelOption.SO_RCVBUF and ChannelOption.SO_SNDBUF for netty.
> Increasing the receive buffer size can increase the I/O performance for
> high-volume transport.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
