group montonic mapping and inverse

fix mapping inverse
remove ip indexing
add get_between_vals test

src/fastfield/multivalued/writer.rs

@@ -319,7 +319,7 @@ impl MultiValueU128FastFieldWriter {
                 let value = field_value.value();
                 let ip_addr = value
                     .as_ip()
-                    .expect(&format!("expected and ip, but got {:?}", value));
+                    .unwrap_or_else(|| panic!("expected and ip, but got {:?}", value));
                 let value = ip_addr.to_u128();
                 self.add_val(value);
             }

src/fastfield/writer.rs

@@ -331,7 +331,7 @@ impl U128FastFieldWriter {
             Some(v) => {
                 let ip_addr = v
                     .as_ip()
-                    .expect(&format!("expected and ip, but got {:?}", v));
+                    .unwrap_or_else(|| panic!("expected and ip, but got {:?}", v));
 
                 let value = ip_addr.to_u128();
                 self.add_val(value);

src/indexer/segment_writer.rs

@@ -294,13 +294,7 @@ impl SegmentWriter {
                         ctx,
                     )?;
                 }
-                FieldType::IpAddr(_) => {
-                    for value in values {
-                        let ip_val = value.as_ip().ok_or_else(make_schema_error)?;
-                        term_buffer.set_text(&ip_val.to_string());
-                        postings_writer.subscribe(doc_id, 0u32, term_buffer, ctx);
-                    }
-                }
+                FieldType::IpAddr(_) => {}
             }
         }
         Ok(())