emkornfield commented on a change in pull request #10652:
URL: https://github.com/apache/arrow/pull/10652#discussion_r716134684
##########
File path:
java/dataset/src/main/java/org/apache/arrow/dataset/scanner/ScanOptions.java
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@@ -26,12 +26,16 @@
/**
* Constructor.
- * @param columns Projected columns. Empty for scanning all columns.
* @param batchSize Maximum row number of each returned {@link
org.apache.arrow.vector.ipc.message.ArrowRecordBatch}
+ * @param columns Projected columns. Null for scanning all columns.
*/
- public ScanOptions(String[] columns, long batchSize) {
- this.columns = columns;
+ public ScanOptions(long batchSize, String[] columns) {
Review comment:
instead of allowing for null would it make sense to use Optional?
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