<% /* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ %> <%@ page contentType="text/html;charset=UTF-8" import="java.util.*" import="java.io.IOException" import="org.apache.hadoop.io.Text" import="org.apache.hadoop.hbase.regionserver.HRegionServer" import="org.apache.hadoop.hbase.regionserver.HRegion" import="org.apache.hadoop.hbase.regionserver.metrics.RegionServerMetrics" import="org.apache.hadoop.hbase.util.Bytes" import="org.apache.hadoop.hbase.HConstants" import="org.apache.hadoop.hbase.HServerInfo" import="org.apache.hadoop.hbase.HServerLoad" import="org.apache.hadoop.hbase.HRegionInfo" %><% HRegionServer regionServer = (HRegionServer)getServletContext().getAttribute(HRegionServer.REGIONSERVER); HServerInfo serverInfo = null; try { serverInfo = regionServer.getHServerInfo(); } catch (IOException e) { e.printStackTrace(); } RegionServerMetrics metrics = regionServer.getMetrics(); Collection onlineRegions = regionServer.getSortedOnlineRegionInfos(); int interval = regionServer.getConfiguration().getInt("hbase.regionserver.msginterval", 3000)/1000; %> HBase Region Server: <%= serverInfo.getServerAddress().getHostname() %>:<%= serverInfo.getServerAddress().getPort() %>

Region Server: <%= serverInfo.getServerAddress().getHostname() %>:<%= serverInfo.getServerAddress().getPort() %>

Local logs, Thread Dump, Log Level

Region Server Attributes

Attribute Name	Value	Description
HBase Version	<%= org.apache.hadoop.hbase.util.VersionInfo.getVersion() %>, r<%= org.apache.hadoop.hbase.util.VersionInfo.getRevision() %>	HBase version and svn revision
HBase Compiled	<%= org.apache.hadoop.hbase.util.VersionInfo.getDate() %>, <%= org.apache.hadoop.hbase.util.VersionInfo.getUser() %>	When HBase version was compiled and by whom
Metrics	<%= metrics.toString() %>	RegionServer Metrics; file and heap sizes are in megabytes
Zookeeper Quorum	<%= regionServer.getZooKeeperWrapper().getQuorumServers() %>	Addresses of all registered ZK servers

Online Regions

<% if (onlineRegions != null && onlineRegions.size() > 0) { %> <% for (HRegionInfo r: onlineRegions) { HServerLoad.RegionLoad load = regionServer.createRegionLoad(r.getRegionName()); %> <% } %>

Region Name	Encoded Name	Start Key	End Key	Metrics
<%= r.getRegionNameAsString() %>	<%= r.getEncodedName() %>	<%= Bytes.toStringBinary(r.getStartKey()) %>	<%= Bytes.toStringBinary(r.getEndKey()) %>	<%= load.toString() %>

Region names are made of the containing table's name, a comma, the start key, a comma, and a randomly generated region id. To illustrate, the region named domains,apache.org,5464829424211263407 is party to the table domains, has an id of 5464829424211263407 and the first key in the region is apache.org. The -ROOT- and .META. 'tables' are internal sytem tables (or 'catalog' tables in db-speak). The -ROOT- keeps a list of all regions in the .META. table. The .META. table keeps a list of all regions in the system. The empty key is used to denote table start and table end. A region with an empty start key is the first region in a table. If region has both an empty start and an empty end key, its the only region in the table. See HBase Home for further explication.

<% } else { %>

Not serving regions

<% } %>