divjotarora commented on code in PR #3608:
URL: https://github.com/apache/parquet-java/pull/3608#discussion_r3393851721
##########
parquet-column/src/main/java/org/apache/parquet/schema/LogicalTypeAnnotation.java:
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@@ -1221,6 +1231,55 @@ public boolean equals(Object obj) {
}
}
+ /**
+ * File logical type annotation. Annotates a group (struct) that represents
a reference to
+ * an external file. The group must contain the following fields by name:
+ * <ul>
+ * <li>{@code path} (required): STRING - the path/URI of the file</li>
+ * <li>{@code size} (optional): INT64 - size of the file content in
bytes</li>
+ * <li>{@code offset} (optional): INT64 - byte offset within the file; if
present, size must be present</li>
+ * <li>{@code etag} (optional): STRING - opaque identifier for the file
version</li>
+ * </ul>
+ * No optional fields with names other than the above are permitted.
Review Comment:
```suggestion
* No fields other than the above are permitted.
```
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