[jira] [Comment Edited] (CASSANDRA-11521) Implement streaming for bulk read requests

["DOAN DuyHai (JIRA)" <ji...@apache.org>]

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

DOAN DuyHai edited comment on CASSANDRA-11521 at 4/11/16 5:57 PM:
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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


was (Author: doanduyhai):
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.



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