cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "DOAN DuyHai (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-11521) Implement streaming for bulk read requests
Date Mon, 11 Apr 2016 17:57:25 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-11521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15235601#comment-15235601
] 

DOAN DuyHai commented on CASSANDRA-11521:
-----------------------------------------

bq. with each row, we both repeat all the clustering columns - even if many rows share them
- and the partition key columns. Could get rid of it, and all related redundant serialisation,
if not building on top of ResultSet.

I had this remark a long time ago back in 2014 and people told me that thanks to network compression
there is no much wasted bandwidth indeed.

What I had in mind back then was to send **raw** data to the driver and the driver will be
responsible to de-serialize and re-format the data to have a proper _CQL row representation_

But it means putting a bunch of extra-logic and overhead on the client side, not sure the
core team agrees on this point

> Implement streaming for bulk read requests
> ------------------------------------------
>
>                 Key: CASSANDRA-11521
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11521
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: Local Write-Read Paths
>            Reporter: Stefania
>            Assignee: Stefania
>             Fix For: 3.x
>
>
> Allow clients to stream data from a C* host, bypassing the coordination layer and eliminating
the need to query individual pages one by one.



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

Mime
View raw message