HBASE-15415 Improve Master WebUI snapshot information (huaxiang sun)

hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/master/MasterStatusTmpl.jamon

@@ -477,7 +477,7 @@ AssignmentManager assignmentManager = master.getAssignmentManager();
         <td><% new Date(snapshotDesc.getCreationTime()) %></td>
     </tr>
     </%for>
-    <p><% snapshots.size() %> snapshot(s) in set.</p>
+    <p><% snapshots.size() %> snapshot(s) in set. [<a href="/snapshotsStats.jsp">Snapshot Storefile stats</a>]</p>
 </table>
 </%if>
 </%def>

hbase-server/src/main/java/org/apache/hadoop/hbase/snapshot/SnapshotInfo.java

@@ -23,8 +23,12 @@ import java.io.FileNotFoundException;
 import java.net.URI;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.Date;
 import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ExecutorService;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicLong;
 
@@ -126,6 +130,7 @@ public final class SnapshotInfo extends Configured implements Tool {
     private AtomicLong hfilesArchiveSize = new AtomicLong();
     private AtomicLong hfilesSize = new AtomicLong();
     private AtomicLong hfilesMobSize = new AtomicLong();
+    private AtomicLong nonSharedHfilesArchiveSize = new AtomicLong();
     private AtomicLong logSize = new AtomicLong();
 
     private final HBaseProtos.SnapshotDescription snapshot;
@@ -142,6 +147,15 @@ public final class SnapshotInfo extends Configured implements Tool {
       this.fs = fs;
     }
 
+    SnapshotStats(final Configuration conf, final FileSystem fs,
+        final HBaseProtos.SnapshotDescription snapshot) {
+      this.snapshot = snapshot;
+      this.snapshotTable = TableName.valueOf(snapshot.getTable());
+      this.conf = conf;
+      this.fs = fs;
+    }
+
+
     /** @return the snapshot descriptor */
     public SnapshotDescription getSnapshotDescription() {
       return new SnapshotDescription(this.snapshot.getName(), this.snapshot.getTable(),
@@ -207,6 +221,17 @@ public final class SnapshotInfo extends Configured implements Tool {
     /** @return the total size of the store files in the mob store*/
     public long getMobStoreFilesSize() { return hfilesMobSize.get(); }
 
+    /** @return the total size of the store files in the archive which is not shared
+     *    with other snapshots and tables
+     *
+     *    This is only calculated when
+     *  {@link #getSnapshotStats(Configuration, HBaseProtos.SnapshotDescription, Map)}
+     *    is called with a non-null Map
+     */
+    public long getNonSharedArchivedStoreFilesSize() {
+      return nonSharedHfilesArchiveSize.get();
+    }
+
     /** @return the percentage of the shared store files */
     public float getSharedStoreFilePercentage() {
       return ((float) hfilesSize.get() / (getStoreFilesSize())) * 100;
@@ -222,15 +247,46 @@ public final class SnapshotInfo extends Configured implements Tool {
       return logSize.get();
     }
 
+    /** Check if for a give file in archive, if there are other snapshots/tables still
+     * reference it.
+     * @param filePath file path in archive
+     * @param snapshotFilesMap a map for store files in snapshots about how many snapshots refer
+     *                         to it.
+     * @return true or false
+     */
+    private boolean isArchivedFileStillReferenced(final Path filePath,
+        final Map<Path, Integer> snapshotFilesMap) {
+
+      Integer c = snapshotFilesMap.get(filePath);
+
+      // Check if there are other snapshots or table from clone_snapshot() (via back-reference)
+      // still reference to it.
+      if ((c != null) && (c == 1)) {
+        Path parentDir = filePath.getParent();
+        Path backRefDir = HFileLink.getBackReferencesDir(parentDir, filePath.getName());
+        try {
+          if (FSUtils.listStatus(fs, backRefDir) == null) {
+            return false;
+          }
+        } catch (IOException e) {
+          // For the purpose of this function, IOException is ignored and treated as
+          // the file is still being referenced.
+        }
+      }
+      return true;
+    }
+
     /**
      * Add the specified store file to the stats
      * @param region region encoded Name
      * @param family family name
      * @param storeFile store file name
+     * @param filesMap store files map for all snapshots, it may be null
      * @return the store file information
      */
     FileInfo addStoreFile(final HRegionInfo region, final String family,
-        final SnapshotRegionManifest.StoreFile storeFile) throws IOException {
+        final SnapshotRegionManifest.StoreFile storeFile,
+        final Map<Path, Integer> filesMap) throws IOException {
       HFileLink link = HFileLink.build(conf, snapshotTable, region.getEncodedName(),
               family, storeFile.getName());
       boolean isCorrupted = false;
@@ -241,6 +297,13 @@ public final class SnapshotInfo extends Configured implements Tool {
           size = fs.getFileStatus(link.getArchivePath()).getLen();
           hfilesArchiveSize.addAndGet(size);
           hfilesArchiveCount.incrementAndGet();
+
+          // If store file is not shared with other snapshots and tables,
+          // increase nonSharedHfilesArchiveSize
+          if ((filesMap != null) &&
+              !isArchivedFileStillReferenced(link.getArchivePath(), filesMap)) {
+            nonSharedHfilesArchiveSize.addAndGet(size);
+          }
         } else if (inArchive = fs.exists(link.getMobPath())) {
           size = fs.getFileStatus(link.getMobPath()).getLen();
           hfilesMobSize.addAndGet(size);
@@ -426,13 +489,14 @@ public final class SnapshotInfo extends Configured implements Tool {
         snapshotDesc.getOwner(), snapshotDesc.getCreationTime(), snapshotDesc.getVersion());
     final SnapshotStats stats = new SnapshotStats(this.getConf(), this.fs, desc);
     SnapshotReferenceUtil.concurrentVisitReferencedFiles(getConf(), fs, snapshotManifest,
+        "SnapshotInfo",
       new SnapshotReferenceUtil.SnapshotVisitor() {
         @Override
         public void storeFile(final HRegionInfo regionInfo, final String family,
             final SnapshotRegionManifest.StoreFile storeFile) throws IOException {
           if (storeFile.hasReference()) return;
 
-          SnapshotStats.FileInfo info = stats.addStoreFile(regionInfo, family, storeFile);
+          SnapshotStats.FileInfo info = stats.addStoreFile(regionInfo, family, storeFile, null);
           if (showFiles) {
             String state = info.getStateToString();
             System.out.printf("%8s %s/%s/%s/%s %s%n",
@@ -501,22 +565,36 @@ public final class SnapshotInfo extends Configured implements Tool {
    */
   public static SnapshotStats getSnapshotStats(final Configuration conf,
       final SnapshotDescription snapshot) throws IOException {
-    HBaseProtos.SnapshotDescription snapshotDesc = ProtobufUtil.createHBaseProtosSnapshotDesc(snapshot);
+    HBaseProtos.SnapshotDescription snapshotDesc = ProtobufUtil.createHBaseProtosSnapshotDesc(
+        snapshot);
+
+    return getSnapshotStats(conf, snapshotDesc, null);
+  }
+
+  /**
+   * Returns the snapshot stats
+   * @param conf the {@link Configuration} to use
+   * @param snapshotDesc  HBaseProtos.SnapshotDescription to get stats from
+   * @param filesMap {@link Map} store files map for all snapshots, it may be null
+   * @return the snapshot stats
+   */
+  public static SnapshotStats getSnapshotStats(final Configuration conf,
+      final HBaseProtos.SnapshotDescription snapshotDesc,
+      final Map<Path, Integer> filesMap) throws IOException {
     Path rootDir = FSUtils.getRootDir(conf);
     FileSystem fs = FileSystem.get(rootDir.toUri(), conf);
     Path snapshotDir = SnapshotDescriptionUtils.getCompletedSnapshotDir(snapshotDesc, rootDir);
     SnapshotManifest manifest = SnapshotManifest.open(conf, fs, snapshotDir, snapshotDesc);
-    final SnapshotStats stats = new SnapshotStats(conf, fs, snapshot);
+    final SnapshotStats stats = new SnapshotStats(conf, fs, snapshotDesc);
     SnapshotReferenceUtil.concurrentVisitReferencedFiles(conf, fs, manifest,
-      new SnapshotReferenceUtil.SnapshotVisitor() {
+        "SnapshotsStatsAggregation", new SnapshotReferenceUtil.SnapshotVisitor() {
-        @Override
+          @Override
-        public void storeFile(final HRegionInfo regionInfo, final String family,
+          public void storeFile(final HRegionInfo regionInfo, final String family,
-            final SnapshotRegionManifest.StoreFile storeFile) throws IOException {
+              final SnapshotRegionManifest.StoreFile storeFile) throws IOException {
-          if (!storeFile.hasReference()) {
+            if (!storeFile.hasReference()) {
-            stats.addStoreFile(regionInfo, family, storeFile);
+              stats.addStoreFile(regionInfo, family, storeFile, filesMap);
-          }
+            }
-        }
+          }});
-    });
     return stats;
   }
 
@@ -531,7 +609,7 @@ public final class SnapshotInfo extends Configured implements Tool {
     FileSystem fs = FileSystem.get(rootDir.toUri(), conf);
     Path snapshotDir = SnapshotDescriptionUtils.getSnapshotsDir(rootDir);
     FileStatus[] snapshots = fs.listStatus(snapshotDir,
-      new SnapshotDescriptionUtils.CompletedSnaphotDirectoriesFilter(fs));
+        new SnapshotDescriptionUtils.CompletedSnaphotDirectoriesFilter(fs));
     List<SnapshotDescription> snapshotLists =
       new ArrayList<SnapshotDescription>(snapshots.length);
     for (FileStatus snapshotDirStat: snapshots) {
@@ -544,6 +622,105 @@ public final class SnapshotInfo extends Configured implements Tool {
     return snapshotLists;
   }
 
+  /**
+   * Gets the store files map for snapshot
+   * @param conf the {@link Configuration} to use
+   * @param snapshot {@link SnapshotDescription} to get stats from
+   * @param exec the {@link ExecutorService} to use
+   * @param filesMap {@link Map} the map to put the mapping entries
+   * @param uniqueHFilesArchiveSize {@link AtomicLong} the accumulated store file size in archive
+   * @param uniqueHFilesSize {@link AtomicLong} the accumulated store file size shared
+   * @param uniqueHFilesMobSize {@link AtomicLong} the accumulated mob store file size shared
+   * @return the snapshot stats
+   */
+  private static void getSnapshotFilesMap(final Configuration conf,
+      final SnapshotDescription snapshot, final ExecutorService exec,
+      final ConcurrentHashMap<Path, Integer> filesMap,
+      final AtomicLong uniqueHFilesArchiveSize, final AtomicLong uniqueHFilesSize,
+      final AtomicLong uniqueHFilesMobSize) throws IOException {
+    HBaseProtos.SnapshotDescription snapshotDesc = ProtobufUtil.createHBaseProtosSnapshotDesc(
+        snapshot);
+    Path rootDir = FSUtils.getRootDir(conf);
+    final FileSystem fs = FileSystem.get(rootDir.toUri(), conf);
+
+    Path snapshotDir = SnapshotDescriptionUtils.getCompletedSnapshotDir(snapshotDesc, rootDir);
+    SnapshotManifest manifest = SnapshotManifest.open(conf, fs, snapshotDir, snapshotDesc);
+    SnapshotReferenceUtil.concurrentVisitReferencedFiles(conf, fs, manifest, exec,
+        new SnapshotReferenceUtil.SnapshotVisitor() {
+          @Override public void storeFile(final HRegionInfo regionInfo, final String family,
+              final SnapshotRegionManifest.StoreFile storeFile) throws IOException {
+            if (!storeFile.hasReference()) {
+              HFileLink link = HFileLink
+                  .build(conf, TableName.valueOf(snapshot.getTable()), regionInfo.getEncodedName(),
+                      family, storeFile.getName());
+              long size;
+              Integer count;
+              Path p;
+              AtomicLong al;
+              int c = 0;
+
+              if (fs.exists(link.getArchivePath())) {
+                p = link.getArchivePath();
+                al = uniqueHFilesArchiveSize;
+                size = fs.getFileStatus(p).getLen();
+              } else if (fs.exists(link.getMobPath())) {
+                p = link.getMobPath();
+                al = uniqueHFilesMobSize;
+                size = fs.getFileStatus(p).getLen();
+              } else {
+                p = link.getOriginPath();
+                al = uniqueHFilesSize;
+                size = link.getFileStatus(fs).getLen();
+              }
+
+              // If it has been counted, do not double count
+              count = filesMap.get(p);
+              if (count != null) {
+                c = count.intValue();
+              } else {
+                al.addAndGet(size);
+              }
+
+              filesMap.put(p, ++c);
+            }
+          }
+        });
+  }
+
+  /**
+   * Returns the map of store files based on path for all snapshots
+   * @param conf the {@link Configuration} to use
+   * @param uniqueHFilesArchiveSize pass out the size for store files in archive
+   * @param uniqueHFilesSize pass out the size for store files shared
+   * @param uniqueHFilesMobSize pass out the size for mob store files shared
+   * @return the map of store files
+   */
+  public static Map<Path, Integer> getSnapshotsFilesMap(final Configuration conf,
+      AtomicLong uniqueHFilesArchiveSize, AtomicLong uniqueHFilesSize,
+      AtomicLong uniqueHFilesMobSize) throws IOException {
+    List<SnapshotDescription> snapshotList = getSnapshotList(conf);
+
+
+    if (snapshotList.size() == 0) {
+      return Collections.emptyMap();
+    }
+
+    ConcurrentHashMap<Path, Integer> fileMap = new ConcurrentHashMap<>();
+
+    ExecutorService exec = SnapshotManifest.createExecutor(conf, "SnapshotsFilesMapping");
+
+    try {
+      for (final SnapshotDescription snapshot : snapshotList) {
+        getSnapshotFilesMap(conf, snapshot, exec, fileMap, uniqueHFilesArchiveSize,
+            uniqueHFilesSize, uniqueHFilesMobSize);
+      }
+    } finally {
+      exec.shutdown();
+    }
+
+    return fileMap;
+  }
+
   /**
    * The guts of the {@link #main} method.
    * Call this method to avoid the {@link #main(String[])} System.exit.

hbase-server/src/main/java/org/apache/hadoop/hbase/snapshot/SnapshotReferenceUtil.java

@@ -169,7 +169,7 @@ public final class SnapshotReferenceUtil {
       final SnapshotManifest manifest) throws IOException {
     final SnapshotDescription snapshotDesc = manifest.getSnapshotDescription();
     final Path snapshotDir = manifest.getSnapshotDir();
-    concurrentVisitReferencedFiles(conf, fs, manifest, new StoreFileVisitor() {
+    concurrentVisitReferencedFiles(conf, fs, manifest, "VerifySnapshot", new StoreFileVisitor() {
       @Override
       public void storeFile(final HRegionInfo regionInfo, final String family,
           final SnapshotRegionManifest.StoreFile storeFile) throws IOException {
@@ -179,7 +179,28 @@ public final class SnapshotReferenceUtil {
   }
 
   public static void concurrentVisitReferencedFiles(final Configuration conf, final FileSystem fs,
-      final SnapshotManifest manifest, final StoreFileVisitor visitor) throws IOException {
+      final SnapshotManifest manifest, final String desc, final StoreFileVisitor visitor)
+      throws IOException {
+
+    final Path snapshotDir = manifest.getSnapshotDir();
+    List<SnapshotRegionManifest> regionManifests = manifest.getRegionManifests();
+    if (regionManifests == null || regionManifests.size() == 0) {
+      LOG.debug("No manifest files present: " + snapshotDir);
+      return;
+    }
+
+    ExecutorService exec = SnapshotManifest.createExecutor(conf, desc);
+
+    try {
+      concurrentVisitReferencedFiles(conf, fs, manifest, exec, visitor);
+    } finally {
+      exec.shutdown();
+    }
+  }
+
+  public static void concurrentVisitReferencedFiles(final Configuration conf, final FileSystem fs,
+      final SnapshotManifest manifest, final ExecutorService exec, final StoreFileVisitor visitor)
+      throws IOException {
     final SnapshotDescription snapshotDesc = manifest.getSnapshotDescription();
     final Path snapshotDir = manifest.getSnapshotDir();
 
@@ -189,37 +210,32 @@ public final class SnapshotReferenceUtil {
       return;
     }
 
-    ExecutorService exec = SnapshotManifest.createExecutor(conf, "VerifySnapshot");
     final ExecutorCompletionService<Void> completionService =
       new ExecutorCompletionService<Void>(exec);
+
+    for (final SnapshotRegionManifest regionManifest : regionManifests) {
+      completionService.submit(new Callable<Void>() {
+        @Override public Void call() throws IOException {
+          visitRegionStoreFiles(regionManifest, visitor);
+          return null;
+        }
+      });
+    }
     try {
-      for (final SnapshotRegionManifest regionManifest: regionManifests) {
+      for (int i = 0; i < regionManifests.size(); ++i) {
-        completionService.submit(new Callable<Void>() {
+        completionService.take().get();
-          @Override
-          public Void call() throws IOException {
-            visitRegionStoreFiles(regionManifest, visitor);
-            return null;
-          }
-        });
       }
-      try {
+    } catch (InterruptedException e) {
-        for (int i = 0; i < regionManifests.size(); ++i) {
+      throw new InterruptedIOException(e.getMessage());
-          completionService.take().get();
+    } catch (ExecutionException e) {
-        }
+      if (e.getCause() instanceof CorruptedSnapshotException) {
-      } catch (InterruptedException e) {
+        throw new CorruptedSnapshotException(e.getCause().getMessage(),
-        throw new InterruptedIOException(e.getMessage());
-      } catch (ExecutionException e) {
-        if (e.getCause() instanceof CorruptedSnapshotException) {
-          throw new CorruptedSnapshotException(e.getCause().getMessage(),
             ProtobufUtil.createSnapshotDesc(snapshotDesc));
-        } else {
+      } else {
-          IOException ex = new IOException();
+        IOException ex = new IOException();
-          ex.initCause(e.getCause());
+        ex.initCause(e.getCause());
-          throw ex;
+        throw ex;
-        }
       }
-    } finally {
-      exec.shutdown();
     }
   }
 

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

@@ -0,0 +1,149 @@
+<%--
+/**
+ * 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.concurrent.atomic.AtomicLong"
+  import="java.util.Date"
+  import="java.util.List"
+  import="java.util.Map"
+  import="org.apache.hadoop.conf.Configuration"
+  import="org.apache.hadoop.fs.Path"
+  import="org.apache.hadoop.hbase.HBaseConfiguration"
+  import="org.apache.hadoop.hbase.master.HMaster"
+  import="org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.SnapshotDescription"
+  import="org.apache.hadoop.hbase.snapshot.SnapshotInfo"
+  import="org.apache.hadoop.hbase.TableName"
+  import="org.apache.hadoop.util.StringUtils" %>
+<%
+  HMaster master = (HMaster)getServletContext().getAttribute(HMaster.MASTER);
+  Configuration conf = master.getConfiguration();
+  AtomicLong totalSharedSize = new AtomicLong();
+  AtomicLong totalArchivedSize = new AtomicLong();
+  AtomicLong totalMobSize = new AtomicLong();
+  long totalSize = 0;
+  long totalUnsharedArchivedSize = 0;
+
+  Map<Path, Integer> filesMap = null;
+
+  List<SnapshotDescription> snapshots = master.isInitialized() ?
+    master.getSnapshotManager().getCompletedSnapshots() : null;
+
+  if (snapshots != null && snapshots.size() > 0) {
+    filesMap = SnapshotInfo.getSnapshotsFilesMap(master.getConfiguration(),
+                   totalArchivedSize, totalSharedSize, totalMobSize);
+    totalSize = totalSharedSize.get() + totalArchivedSize.get() + totalMobSize.get();
+  }
+%>
+<!--[if IE]>
+<!DOCTYPE html>
+<![endif]-->
+<?xml version="1.0" encoding="UTF-8" ?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+    <meta charset="utf-8">
+    <title>HBase Master Snapshots: <%= master.getServerName() %></title>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta name="description" content="">
+    <meta name="author" content="">
+
+    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
+    <link href="/static/css/bootstrap-theme.min.css" rel="stylesheet">
+    <link href="/static/css/hbase.css" rel="stylesheet">
+  </head>
+<body>
+<div class="navbar  navbar-fixed-top navbar-default">
+    <div class="container-fluid">
+        <div class="navbar-header">
+            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
+                <span class="icon-bar"></span>
+                <span class="icon-bar"></span>
+                <span class="icon-bar"></span>
+            </button>
+            <a class="navbar-brand" href="/master-status"><img src="/static/hbase_logo_small.png" alt="HBase Logo"/></a>
+        </div>
+        <div class="collapse navbar-collapse">
+            <ul class="nav navbar-nav">
+                <li><a href="/master-status">Home</a></li>
+                <li><a href="/tablesDetailed.jsp">Table Details</a></li>
+                <li><a href="/procedures.jsp">Procedures</a></li>
+                <li><a href="/logs/">Local Logs</a></li>
+                <li><a href="/logLevel">Log Level</a></li>
+                <li><a href="/dump">Debug Dump</a></li>
+                <li><a href="/jmx">Metrics Dump</a></li>
+                <% if (HBaseConfiguration.isShowConfInServlet()) { %>
+                <li><a href="/conf">HBase Configuration</a></li>
+                <% } %>
+            </ul>
+        </div><!--/.nav-collapse -->
+    </div>
+</div>
+<div class="container-fluid content">
+  <div class="row">
+      <div class="page-header">
+          <h1>Snapshot Storefile Stats</h1>
+      </div>
+  </div>
+  <table class="table table-striped" width="90%" >
+    <tr>
+        <th>Snapshot Name</th>
+        <th>Table</th>
+        <th>Creation Time</th>
+        <th>Shared Storefile Size</th>
+        <th>Mob Storefile Size</th>
+        <th>Archived Storefile Size</th>
+    </tr>
+    <%for (SnapshotDescription snapshotDesc : snapshots) { %>
+    <tr>
+      <td><a href="/snapshot.jsp?name=<%= snapshotDesc.getName() %>">
+        <%= snapshotDesc.getName() %></a></td>
+      <%
+        TableName snapshotTable = TableName.valueOf(snapshotDesc.getTable());
+        SnapshotInfo.SnapshotStats stats = SnapshotInfo.getSnapshotStats(master.getConfiguration(),
+          snapshotDesc, filesMap);
+        totalUnsharedArchivedSize += stats.getNonSharedArchivedStoreFilesSize();
+      %>
+      <td><a href="/table.jsp?name=<%= snapshotTable.getNameAsString() %>">
+        <%= snapshotTable.getNameAsString() %></a></td>
+      <td><%= new Date(snapshotDesc.getCreationTime()) %></td>
+      <td><%= StringUtils.humanReadableInt(stats.getSharedStoreFilesSize()) %></td>
+      <td><%= StringUtils.humanReadableInt(stats.getMobStoreFilesSize())  %></td>
+      <td><%= StringUtils.humanReadableInt(stats.getArchivedStoreFileSize()) %>
+        (<%= StringUtils.humanReadableInt(stats.getNonSharedArchivedStoreFilesSize()) %>)</td>
+    </tr>
+    <% } %>
+    <p><%= snapshots.size() %> snapshot(s) in set.</p>
+    <p>Total Storefile Size: <%= StringUtils.humanReadableInt(totalSize) %></p>
+    <p>Total Shared Storefile Size: <%= StringUtils.humanReadableInt(totalSharedSize.get()) %>,
+       Total Mob Storefile Size: <%= StringUtils.humanReadableInt(totalMobSize.get()) %>,
+       Total Archived Storefile Size: <%= StringUtils.humanReadableInt(totalArchivedSize.get()) %>
+       (<%= StringUtils.humanReadableInt(totalUnsharedArchivedSize) %>)</p>
+    <p>Shared Storefile Size is the Storefile size shared between snapshots and active tables.
+       Mob Storefile Size is the Mob Storefile size shared between snapshots and active tables.
+       Archived Storefile Size is the Storefile size in Archive.
+       The format of Archived Storefile Size is NNN(MMM). NNN is the total Storefile
+       size in Archive, MMM is the total Storefile size in Archive that is specific
+       to the snapshot (not shared with other snapshots and tables)</p>
+  </table>
+</div>
+
+<script src="/static/js/jquery.min.js" type="text/javascript"></script>
+<script src="/static/js/bootstrap.min.js" type="text/javascript"></script>
+
+</body>
+</html>