You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@rocketmq.apache.org by GitBox <gi...@apache.org> on 2022/11/03 08:59:33 UTC
[GitHub] [rocketmq] liweiyuan opened a new issue, #5462: About RemotingCommand.decode parse header is a repeated calculation
liweiyuan opened a new issue, #5462:
URL: https://github.com/apache/rocketmq/issues/5462
in org.apache.rocketmq.remoting.protocol.RemotingCommand.decode method，Through ByteBuf calculate command header is a repeated operation
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: commits-unsubscribe@rocketmq.apache.org.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
[GitHub] [rocketmq] ShadowySpirits commented on issue #5462: About RemotingCommand.decode parse header is a repeated calculation
Posted by GitBox <gi...@apache.org>.
ShadowySpirits commented on issue #5462:
URL: https://github.com/apache/rocketmq/issues/5462#issuecomment-1312319073
> > > in org.apache.rocketmq.remoting.protocol.RemotingCommand.decode method，Through ByteBuf calculate command header is a repeated operation 
> >
> >
> > This is not a repeated operation. This operation is to solve the problem of java coding. You can search for "the meaning of doing 0xFFFFF & operation" with the browser~
>
> Can you tell me the meaning of doing 0xFFFFFF & operation？I tried to search the browser but didn't find the relevant results.please.
We use byte(0-255) to transfer data via network. But java doesn't support unsigned int, so we should use 0xFFFFFF & operation to get unsigned int. See [this blog (Chinese ver)](https://blog.lv5.moe/p/the-mathematical-principle-of-ones-complement-and-twos-complement) for more info about how could we do this.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: commits-unsubscribe@rocketmq.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
[GitHub] [rocketmq] liweiyuan closed issue #5462: About RemotingCommand.decode parse header is a repeated calculation
Posted by GitBox <gi...@apache.org>.
liweiyuan closed issue #5462: About RemotingCommand.decode parse header is a repeated calculation
URL: https://github.com/apache/rocketmq/issues/5462
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: commits-unsubscribe@rocketmq.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
[GitHub] [rocketmq] The-Gamer-01 commented on issue #5462: About RemotingCommand.decode parse header is a repeated calculation
Posted by GitBox <gi...@apache.org>.
The-Gamer-01 commented on issue #5462:
URL: https://github.com/apache/rocketmq/issues/5462#issuecomment-1312059096
> > in org.apache.rocketmq.remoting.protocol.RemotingCommand.decode method，Through ByteBuf calculate command header is a repeated operation 
>
> This is not a repeated operation. This operation is to solve the problem of java coding. You can search for "the meaning of doing 0xFFFFF & operation" with the browser~
Can you tell me the meaning of doing 0xFFFFFF & operation？I tried to search the browser but didn't find the relevant results.please.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: commits-unsubscribe@rocketmq.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
[GitHub] [rocketmq] jasonjavaYY commented on issue #5462: About RemotingCommand.decode parse header is a repeated calculation
Posted by GitBox <gi...@apache.org>.
jasonjavaYY commented on issue #5462:
URL: https://github.com/apache/rocketmq/issues/5462#issuecomment-1303152963
> in org.apache.rocketmq.remoting.protocol.RemotingCommand.decode method，Through ByteBuf calculate command header is a repeated operation 
This is not a repeated operation. This operation is to solve the problem of java coding. You can search for "the meaning of doing 0xFFFFF & operation" with the browser~
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: commits-unsubscribe@rocketmq.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org