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Posted to issues@flink.apache.org by "Chesnay Schepler (JIRA)" <ji...@apache.org> on 2015/11/25 11:56:11 UTC
[jira] [Commented] (FLINK-2186) Rework CSV import to support very
wide files
[ https://issues.apache.org/jira/browse/FLINK-2186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15026607#comment-15026607 ]
Chesnay Schepler commented on FLINK-2186:
-----------------------------------------
Could we allow users to pass a String that contains type short hands? like "sis" would be equivalent to [String, Integer, String].
> Rework CSV import to support very wide files
> --------------------------------------------
>
> Key: FLINK-2186
> URL: https://issues.apache.org/jira/browse/FLINK-2186
> Project: Flink
> Issue Type: Improvement
> Components: Machine Learning Library, Scala API
> Reporter: Theodore Vasiloudis
>
> In the current readVcsFile implementation, importing CSV files with many columns can become from cumbersome to impossible.
> For example to import an 11 column file we need to write:
> {code}
> val cancer = env.readCsvFile[(String, String, String, String, String, String, String, String, String, String, String)]("/path/to/breast-cancer-wisconsin.data")
> {code}
> For many use cases in Machine Learning we might have CSV files with thousands or millions of columns that we want to import as vectors.
> In that case using the current readCsvFile method becomes impossible.
> We therefore need to rework the current function, or create a new one that will allow us to import CSV files with an arbitrary number of columns.
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