SOLR-18319: Simplify 404 handling

changelog/unreleased/SOLR-18319-404-simplify.yml

@@ -0,0 +1,8 @@
+title: >
+  Solr's 404 page is less generic.  We now log 404s in Solr's log.
+type: changed
+authors:
+  - name: David Smiley
+links:
+  - name: SOLR-18319
+    url: https://issues.apache.org/jira/browse/SOLR-18319

solr/core/src/java/org/apache/solr/servlet/HttpSolrCall.java

@@ -318,9 +318,8 @@ protected void init() throws Exception {
       }
     }
 
-    String msg = "no handler, collection, or core for " + path;
-    sendError(404, msg);
-    log.info(msg); // not "error" since Solr isn't necessarily at fault
+    sendError(404, "no handler, collection, or core for " + path);
+    log.info("path={} status=404", path); // not "error" since Solr isn't necessarily at fault
     action = RETURN;
   }
 

solr/webapp/web/WEB-INF/web.xml

@@ -167,9 +167,4 @@
     <url-pattern>/zookeeper</url-pattern>
   </servlet-mapping>
 -->
-
-  <error-page>
-    <error-code>404</error-code>
-    <location>/error404.html</location>
-  </error-page>
 </web-app>