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From "Jacques Nadeau (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-13) Storage Engine: Define Java Interface
Date Fri, 11 Jan 2013 01:37:11 GMT

    [ https://issues.apache.org/jira/browse/DRILL-13?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13550679#comment-13550679

Jacques Nadeau commented on DRILL-13:

To clarify the original description:

Input/Output (at least one)
Record Reading
Record Writing

capabilities interface (what can be pushed down, what types of schemas might be available)
schema interface (optional, ability to provide schema about various data sources)
statistics interface (optional, provide information about , 
data layout and ordering (optional, location of data e.g. which disks and nodes, information
about primary and secondary sorts... maybe this is an extension of the schema interface.)

> Storage Engine: Define Java Interface
> -------------------------------------
>                 Key: DRILL-13
>                 URL: https://issues.apache.org/jira/browse/DRILL-13
>             Project: Apache Drill
>          Issue Type: Task
>            Reporter: Jacques Nadeau
> We're going to need to define a storage engine API.  At a minimum, we'll need to generate
a Java one.  We will probably need to also create a CPP one.  This task is for the former.
 Things that are likely to be included in a the Java interface are: reader (scanner), writer,
capabilities interface, schema interface, statistics interface, data layout and ordering

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