You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@quickstep.apache.org by "Harshad Deshmukh (JIRA)" <ji...@apache.org> on 2018/06/05 19:52:00 UTC

[jira] [Closed] (QUICKSTEP-127) Provide access to Quickstep storage to fetch query results

     [ https://issues.apache.org/jira/browse/QUICKSTEP-127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Harshad Deshmukh closed QUICKSTEP-127.
--------------------------------------
    Resolution: Fixed

> Provide access to Quickstep storage to fetch query results
> ----------------------------------------------------------
>
>                 Key: QUICKSTEP-127
>                 URL: https://issues.apache.org/jira/browse/QUICKSTEP-127
>             Project: Apache Quickstep
>          Issue Type: New Feature
>          Components: Storage
>            Reporter: Harshad Deshmukh
>            Assignee: Harshad Deshmukh
>            Priority: Major
>         Attachments: Network-Client-Reuslt-Exchange.png
>
>
> Quickstep needs a mechanism to provide access to the clients to the query results. We propose a separate thread called "Data Provider Thread" (DPT). This thread can interact with the clients in the following ways:
> Client --> Quickstep : Query text
> Quickstep executes the query and stores the result in temporary storage.
> Quickstep --> client : Signal query completion and send list of block IDs for the result relation.
> Client --> Quickstep (DPT) : Request contents of the result blocks
> Quickstep (DPT) --> client : Send the contents of the requested result blocks.
> Client --> Quickstep (DPT) : Signal completion of reading the results. After receiving this signal, DPT can safely drop the result relation.
>  



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)