Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/20316#discussion_r162842712
--- Diff:
sql/core/src/main/java/org/apache/spark/sql/vectorized/ColumnarBatch.java ---
@@ -96,16 +90,6 @@ public void setNumRows(int numRows) {
*/
public int numRows() { return numRows; }
- /**
- * Returns the schema that makes up this batch.
- */
- public StructType schema() { return schema; }
-
- /**
- * Returns the max capacity (in number of rows) for this batch.
- */
- public int capacity() { return capacity; }
--- End diff --
For `ColumnarBatch` consumers, they don't care about `capacity`, but only
`numRows`,
`capacity` is only needed by column vector builders. Also they don't care
about schema/field names, but only the data type of each column.
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