[jira] [Assigned] (HAWQ-1234) Document HAWQ to PXF APIs

["Roman Shaposhnik (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HAWQ-1234?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Roman Shaposhnik reassigned HAWQ-1234:
--------------------------------------

    Assignee: Roman Shaposhnik  (was: Ed Espino)

> Document HAWQ to PXF APIs
> -------------------------
>
>                 Key: HAWQ-1234
>                 URL: https://issues.apache.org/jira/browse/HAWQ-1234
>             Project: Apache HAWQ
>          Issue Type: Sub-task
>          Components: PXF
>            Reporter: Roman Shaposhnik
>            Assignee: Roman Shaposhnik
>         Attachments: PXFAdvancedStatsplan.pdf
>
>
> It would be very useful to start documenting HAWQ to PXF APIs. The right places to start are:
>    * libcurl (a thin wrapper for making HAWQ C code be able to do REST calls):
> https://github.com/apache/incubator-hawq/blob/master/src/include/access/libchurl.h
> https://github.com/apache/incubator-hawq/blob/master/src/backend/access/external/libchurl.c
>    * pxfmasterapi (mostly metadata calls that master is doing):
> https://github.com/apache/incubator-hawq/blob/master/src/backend/access/external/pxfmasterapi.c
> Here you will find how HAWQ via PXF pulls using a REST API to get external metadata and some logic to parse the JSON response.
>    * gpbridgeapi (segment calls to PXF):
> https://github.com/apache/incubator-hawq/blob/master/src/bin/gpfusion/gpbridgeapi.c
> Here you will find other examples of (read and write calls) used to fetch external data.
> Design doc on PXF's support for analyze (pxf's analyzer) is attached



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