ConeyLiu commented on code in PR #1173:
URL: https://github.com/apache/parquet-mr/pull/1173#discussion_r1361851247
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parquet-column/src/main/java/org/apache/parquet/internal/column/columnindex/ColumnIndexBuilder.java:
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@@ -543,6 +546,11 @@ public static ColumnIndex build(
* the statistics to be added
*/
public void add(Statistics<?> stats) {
+ if (stats.isEmpty()) {
Review Comment:
This is especially used when the `ColumnIndex` is null during rewriting. And
we pass empty statistics to the `ColumnIndexBuilder` to avoid NPE.
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