HBASE-23578 [UI] Master UI shows long stack traces when table is broken (#3014)

Co-authored-by: Shuhei Yamasaki <[email protected]>
Signed-off-by: Viraj Jasani <[email protected]>

Author: Apache9

hbase-server/src/main/resources/hbase-webapps/master/table.jsp

@@ -1089,9 +1089,18 @@
 </table>
 
 <% }
-} catch(Exception ex) {
+} catch(Exception ex) { %>
+  Unknown Issue with Regions
+  <div onclick="document.getElementById('closeStackTrace').style.display='block';document.getElementById('openStackTrace').style.display='none';">
+    <a id="openStackTrace" style="cursor:pointer;"> Show StackTrace</a>
+  </div>
+  <div id="closeStackTrace" style="display:none;clear:both;">
+    <div onclick="document.getElementById('closeStackTrace').style.display='none';document.getElementById('openStackTrace').style.display='block';">
+      <a style="cursor:pointer;"> Close StackTrace</a>
+    </div>
+  <%
   for(StackTraceElement element : ex.getStackTrace()) {
-    %><%= StringEscapeUtils.escapeHtml4(element.toString()) %><%
+    %><%= StringEscapeUtils.escapeHtml4(element.toString() + "\n") %><%
   }
 }
 } // end else