Liya Fan created ARROW-6707: ------------------------------- Summary: [Java] Improve the performance of JDBC adapters by using nullable information Key: ARROW-6707 URL: https://issues.apache.org/jira/browse/ARROW-6707 Project: Apache Arrow Issue Type: Improvement Components: Java Reporter: Liya Fan Assignee: Liya Fan
JDBC meta data has a field that indicates if a column can contain null. We can make use of this information when transforming jdbc data to arrow vectors. In particular, if the column cannot have null, there is no need to call the JDBC API for each value to check if the last value is null. This will improve the performance of transforming JDBC data to arrow vectors. -- This message was sent by Atlassian Jira (v8.3.4#803005)