<%@ page contentType="text/html;charset=UTF-8" import="java.util.*" import="org.apache.hadoop.conf.Configuration" import="org.apache.hadoop.hbase.util.Bytes" import="org.apache.hadoop.hbase.util.JvmVersion" import="org.apache.hadoop.hbase.util.FSUtils" import="org.apache.hadoop.hbase.master.HMaster" import="org.apache.hadoop.hbase.HConstants" import="org.apache.hadoop.hbase.client.HBaseAdmin" import="org.apache.hadoop.hbase.HServerInfo" import="org.apache.hadoop.hbase.HServerAddress" import="org.apache.hadoop.hbase.HTableDescriptor" %><% HMaster master = (HMaster)getServletContext().getAttribute(HMaster.MASTER); Configuration conf = master.getConfiguration(); HServerAddress rootLocation = master.getCatalogTracker().getRootLocation(); boolean metaOnline = master.getCatalogTracker().getMetaLocation() != null; Map serverToServerInfos = master.getServerManager().getOnlineServers(); int interval = conf.getInt("hbase.regionserver.msginterval", 1000)/1000; if (interval == 0) { interval = 1; } boolean showFragmentation = conf.getBoolean("hbase.master.ui.fragmentation.enabled", false); Map frags = null; if (showFragmentation) { frags = FSUtils.getTableFragmentation(master); } %> HBase Master: <%= master.getMasterAddress().getHostname()%>:<%= master.getMasterAddress().getPort() %>

Master: <%=master.getMasterAddress().getHostname()%>:<%=master.getMasterAddress().getPort()%>

Local logs, Thread Dump, Log Level

<% if (JvmVersion.isBadJvmVersion()) { %>

Your current JVM version <%= System.getProperty("java.version") %> is known to be unstable with HBase. Please see the HBase wiki for details.

<% } %> <% if (!FSUtils.isAppendSupported(conf)) { %>

You are currently running the HMaster without HDFS append support enabled. This may result in data loss. Please see the HBase wiki for details.

<% } %>

Master Attributes

<% if (showFragmentation) { %> <% } %>

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
Hadoop Version	<%= org.apache.hadoop.util.VersionInfo.getVersion() %>, r<%= org.apache.hadoop.util.VersionInfo.getRevision() %>	Hadoop version and svn revision
Hadoop Compiled	<%= org.apache.hadoop.util.VersionInfo.getDate() %>, <%= org.apache.hadoop.util.VersionInfo.getUser() %>	When Hadoop version was compiled and by whom
HBase Root Directory	<%= FSUtils.getRootDir(master.getConfiguration()).toString() %>	Location of HBase home directory
Load average	<%= master.getServerManager().getAverageLoad() %>	Average number of regions per regionserver. Naive computation.
Fragmentation	<%= frags.get("-TOTAL-") != null ? frags.get("-TOTAL-").intValue() + "%" : "n/a" %>	Overall fragmentation of all tables, including .META. and -ROOT-.
Zookeeper Quorum	<%= master.getZooKeeperWatcher().getQuorum() %>	Addresses of all registered ZK servers. For more, see zk dump.

Catalog Tables

<% if (rootLocation != null) { %> <% if (showFragmentation) { %> <% } %> <% if (showFragmentation) { %> <% } %> <% if (metaOnline) { %> <% if (showFragmentation) { %> <% } %> <% } %>

Table	Frag.	Description
<%= Bytes.toString(HConstants.ROOT_TABLE_NAME) %>	<%= frags.get("-ROOT-") != null ? frags.get("-ROOT-").intValue() + "%" : "n/a" %>	The -ROOT- table holds references to all .META. regions.
<%= Bytes.toString(HConstants.META_TABLE_NAME) %>	<%= frags.get(".META.") != null ? frags.get(".META.").intValue() + "%" : "n/a" %>	The .META. table holds references to all User Table regions

<%} %>

User Tables

<% HTableDescriptor[] tables = new HBaseAdmin(conf).listTables(); if(tables != null && tables.length > 0) { %> <% if (showFragmentation) { %> <% } %> <% for(HTableDescriptor htDesc : tables ) { %> <% if (showFragmentation) { %> <% } %> <% } %>

<%= tables.length %> table(s) in set.

Table	Frag.	Description
><%= htDesc.getNameAsString() %>	<%= frags.get(htDesc.getNameAsString()) != null ? frags.get(htDesc.getNameAsString()).intValue() + "%" : "n/a" %>	<%= htDesc.toString() %>

<% } %>

Region Servers

<% if (serverToServerInfos != null && serverToServerInfos.size() > 0) { %> <% int totalRegions = 0; int totalRequests = 0; %> <% String[] serverNames = serverToServerInfos.keySet().toArray(new String[serverToServerInfos.size()]); Arrays.sort(serverNames); for (String serverName: serverNames) { HServerInfo hsi = serverToServerInfos.get(serverName); String hostname = hsi.getServerAddress().getHostname() + ":" + hsi.getInfoPort(); String url = "http://" + hostname + "/"; totalRegions += hsi.getLoad().getNumberOfRegions(); totalRequests += hsi.getLoad().getNumberOfRequests() / interval; long startCode = hsi.getStartCode(); %> <% } %>

	Address	Start Code	Load
<%= hostname %>	<%= startCode %>	<%= hsi.getLoad().toString(interval) %>
Total:	servers: <%= serverToServerInfos.size() %>		requests=<%= totalRequests %>, regions=<%= totalRegions %>

Load is requests per second and count of regions loaded

<% } %>