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Posted to issues@ignite.apache.org by "Nikolay Izhikov (JIRA)" <ji...@apache.org> on 2018/10/08 16:02:00 UTC
[jira] [Comment Edited] (IGNITE-9228) Spark SQL Table Schema
Specification
[ https://issues.apache.org/jira/browse/IGNITE-9228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16642063#comment-16642063 ]
Nikolay Izhikov edited comment on IGNITE-9228 at 10/8/18 4:01 PM:
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[~stuartmacd] We should update documentation and examples according to this contribution. Do you want to do it?
https://issues.apache.org/jira/browse/IGNITE-9817
was (Author: nizhikov):
[~stuartmacd] We should update documentation and examples according to this contribution. Do you want to do it?
> Spark SQL Table Schema Specification
> ------------------------------------
>
> Key: IGNITE-9228
> URL: https://issues.apache.org/jira/browse/IGNITE-9228
> Project: Ignite
> Issue Type: Improvement
> Components: spark
> Affects Versions: 2.6
> Reporter: Stuart Macdonald
> Assignee: Stuart Macdonald
> Priority: Major
> Fix For: 2.8
>
>
> The Ignite Spark SQL interface currently takes just “table name” as a
> parameter which it uses to supply a Spark dataset with data from the
> underlying Ignite SQL table with that name.
> To do this it loops through each cache and finds the first one with the
> given table name [1]. This causes issues if there are multiple tables
> registered in different schema with the same table name as you can only
> access one of those from Spark. We could either:
> 1. Pass an extra parameter through the Ignite Spark data source which
> optionally specifies the schema name.
> 2. Support namespacing in the existing table name parameter, ie
> “schemaName.tableName”
> [1 ]https://github.com/apache/ignite/blob/ca973ad99c6112160a305df05be9458e29f88307/modules/spark/src/main/scala/org/apache/ignite/spark/impl/package.scala#L119
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