paleolimbot commented on code in PR #240:
URL: https://github.com/apache/parquet-format/pull/240#discussion_r1773560690


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src/main/thrift/parquet.thrift:
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@@ -237,6 +237,135 @@ struct SizeStatistics {
    3: optional list<i64> definition_level_histogram;
 }
 
+/**
+ * Physical type and encoding for the geometry type.
+ */
+enum GeometryEncoding {

Review Comment:
   I think this is OK as long as the next encoding doesn't use a ByteArray as 
storage (otherwise an older reader would have no way to error when it 
encounters the new encoding that it does not understand, if I'm understanding 
it correctly). I am not sure that is likely but such encodings do exist.



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