gaborkaszab commented on code in PR #12194:
URL: https://github.com/apache/iceberg/pull/12194#discussion_r2251653936


##########
core/src/test/java/org/apache/iceberg/rest/RESTCatalogAdapter.java:
##########
@@ -704,4 +714,12 @@ private static TableIdentifier 
viewIdentFromPathVars(Map<String, String> pathVar
     return TableIdentifier.of(
         namespaceFromPathVars(pathVars), 
RESTUtil.decodeString(pathVars.get("view")));
   }
+
+  private static class ETag {
+    private static final HashFunction MURMUR3 = Hashing.murmur3_32_fixed();
+
+    public static String of(LoadTableResponse resp) {
+      return MURMUR3.hashString(resp.metadataLocation(), 
StandardCharsets.UTF_8).toString();
+    }

Review Comment:
   I wanted to hide the details of how an ETag is created from the user of the 
class, so hence I required the LoadTableResponse as a parameter. Technically 
metadataLocation could be enough, but I wanted to hide this, and also in case 
we decide to change how ETag is produced, we can do so without changing the 
signature of the function. WDYT?



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