nastra commented on code in PR #8909:
URL: https://github.com/apache/iceberg/pull/8909#discussion_r1375097118

##########
nessie/src/main/java/org/apache/iceberg/nessie/NessieIcebergClient.java:
##########
@@ -355,21 +384,34 @@ public void renameTable(TableIdentifier from, 
TableIdentifier to) {
       // and removed by another.
       throw new RuntimeException(
           String.format(
-              "Cannot rename table '%s' to '%s': " + "ref '%s' no longer 
exists.",
-              from.name(), to.name(), getRef().getName()),
+              "Cannot rename %s '%s' to '%s': ref '%s' no longer exists.",
+              contentType, from, to, getRef().getName()),
           e);
     } catch (BaseNessieClientServerException e) {
       throw new CommitFailedException(
           e,
-          "Cannot rename table '%s' to '%s': " + "the current reference is not 
up to date.",
-          from.name(),
-          to.name());
+          "Cannot rename %s '%s' to '%s': the current reference is not up to 
date.",
+          contentType,
+          from,
+          to);
     } catch (HttpClientException ex) {
       // Intentionally catch all nessie-client-exceptions here and not just 
the "timeout" variant
       // to catch all kinds of network errors (e.g. connection reset). Network 
code implementation
       // details and all kinds of network devices can induce unexpected 
behavior. So better be
       // safe than sorry.
       throw new CommitStateUnknownException(ex);
+    } catch (NessieBadRequestException ex) {
+      if (ex.getMessage().contains("already exists with content ID")) {
+        if (isView) {

Review Comment:
   I think something like this would be better here:
   ```
   String errorMsg = isView ? "...<view error msg>.." : "...<table error 
msg>..."
   throw new AlreadyExistsException(errorMsg)
   ```



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