[GitHub] [hudi] leesf commented on a change in pull request #4013: [HUDI-2778] Optimize statistics collection related codes and add some docs for z-order

[GitBox <gi...@apache.org>]

leesf commented on a change in pull request #4013:
URL: https://github.com/apache/hudi/pull/4013#discussion_r751261009



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File path: hudi-common/src/main/java/org/apache/hudi/common/model/HoodieColumnRangeMetadata.java
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@@ -30,16 +28,21 @@
   private final String columnName;
   private final T minValue;
   private final T maxValue;
-  private final long numNulls;
-  private final PrimitiveStringifier stringifier;
+  private long numNulls;
+  // For Decimal Type/Date Type, minValue/maxValue cannot represent it's original value.
+  // eg: when parquet collects column information, the decimal type is collected as int/binary type.
+  // so we cannot use minValue and maxValue directly, use minValueAsString/maxValueAsString instead.
+  private final String minValueAsString;
+  private final String maxValueAsString;
 
-  public HoodieColumnRangeMetadata(final String filePath, final String columnName, final T minValue, final T maxValue, final long numNulls, final PrimitiveStringifier stringifier) {
+  public HoodieColumnRangeMetadata(final String filePath, final String columnName, final T minValue, final T maxValue, long numNulls, final String minValueAsString, final String maxValueAsString) {

Review comment:
       split into two lines.




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