RussellSpitzer commented on code in PR #14435:
URL: https://github.com/apache/iceberg/pull/14435#discussion_r2789091619
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api/src/main/java/org/apache/iceberg/actions/RewriteDataFiles.java:
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@@ -147,6 +147,32 @@ public interface RewriteDataFiles
*/
String OUTPUT_SPEC_ID = "output-spec-id";
+ /**
+ * Use Parquet row-group level merging during rewrite operations when
applicable.
+ *
+ * <p>When enabled, Parquet files will be merged at the row-group level by
directly copying row
Review Comment:
I'm not sure I follow the problem. I thought it was generally bad practice
to have so many row groups in a single file, i'm also not a fan of how careful
we have to be on schema and field id matching.
@lintingbin Why would we have to do 3) ? Why not just not mark the 150mb
file for compaction if that's an issue? You could always just have compaction
only compacts files smaller than 10 mb or what not?
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