rdblue commented on a change in pull request #1790:
URL: https://github.com/apache/iceberg/pull/1790#discussion_r533744262
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File path: api/src/main/java/org/apache/iceberg/NaNOnlyFieldMetrics.java
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@@ -17,51 +17,50 @@
* under the License.
*/
-package org.apache.iceberg.parquet;
+package org.apache.iceberg;
import java.nio.ByteBuffer;
-import org.apache.iceberg.FieldMetrics;
/**
- * Iceberg internally tracked field level metrics, used by Parquet writer only.
+ * Iceberg internally tracked field level metrics, used by Parquet and ORC
writers only.
* <p>
- * Parquet keeps track of most metrics in its footer, and only NaN counter is
actually tracked by writers.
- * This wrapper ensures that metrics not being updated by Parquet writers will
not be incorrectly used, by throwing
+ * Parquet/ORC keeps track of most metrics in file statistics, and only NaN
counter is actually tracked by writers.
+ * This wrapper ensures that metrics not being updated by those writers will
not be incorrectly used, by throwing
* exceptions when they are accessed.
*/
-public class ParquetFieldMetrics extends FieldMetrics {
+public class NaNOnlyFieldMetrics extends FieldMetrics {
/**
- * Constructor for creating a Parquet-specific FieldMetrics.
+ * Constructor for creating a FieldMetrics with only NaN counter.
* @param id field id being tracked by the writer
* @param nanValueCount number of NaN values, will only be non-0 for double
or float field.
*/
- public ParquetFieldMetrics(int id,
+ public NaNOnlyFieldMetrics(int id,
Review comment:
I would probably change this to `NaNFieldMetrics` instead because it is
likely that we will be adding lower/upper bounds to this in the near future.
That would avoid another rename, but it's up to you.
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