[SQOOP-1976] Sqoop2: Avoid massive in-memory copy of schema column

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: Qian Xu
• Reporter: Qian Xu
• Created: 07/Jan/15 04:36
• Updated: 25/Feb/15 05:45

Description

SQOOP-1836 introduced a new method getColumnsArray. As the class Schema is used very often, the idea is to provide a constant (better) lookup time for particular column. But I think the implementation will create array from a list for every call, it will be even slower than accessing the original getColumnsList in some cases. I think we can change the type of columns from LinkedList to ArrayList, which is included in SQOOP-1969. The jira proposes to remove getColumnsArray.