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From "Qian Xu (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SQOOP-1969) Support getColumnSize method for Schema class
Date Mon, 05 Jan 2015 08:53:34 GMT

     [ https://issues.apache.org/jira/browse/SQOOP-1969?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Qian Xu reassigned SQOOP-1969:

    Assignee: Qian Xu

> Support getColumnSize method for Schema class
> ---------------------------------------------
>                 Key: SQOOP-1969
>                 URL: https://issues.apache.org/jira/browse/SQOOP-1969
>             Project: Sqoop
>          Issue Type: Improvement
>          Components: connectors/generic
>    Affects Versions: 2.0.0
>            Reporter: Jerry Chen
>            Assignee: Qian Xu
> Currently, Schema class don't have getColumnSize method. There are a lot of places in
Matcher implementations getMatchingData calling getColumnsArray().length to purely get the
column size. While getColumnsArray a method not efficient as it looks like:
> {quote}
> public Column[] getColumnsArray() 
>     return columns.toArray(new Column[columns.size()]);
> {quote}
> It is suggested to add getColumnSize method in schema and the caller can use this method
to return the column length. 
> This problem gets serious because getMatchingData is called repeatedly with each record
in Mapper.

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