Jerry Chen created SQOOP-1969:
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Summary: 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
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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