diff --git a/book.html b/book.html
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--- a/book.html
+++ b/book.html
@@ -28162,6 +28162,33 @@ drop_namespace 'pre_upgrade_cleanup'</pre>
+<div class="sect2">
+<h3 id="_data_block_encoding_tool"><a class="anchor" 
href="#_data_block_encoding_tool"></a>149.23. Data Block Encoding Tool</h3>
+<div class="paragraph">
+<p>Tests various compression algorithms with different data block encoder for 
key compression on an existing HFile.
+Useful for testing, debugging and benchmarking.</p>
+<div class="paragraph">
+<p>You must specify <code>-f</code> which is the full path of the HFile.</p>
+<div class="paragraph">
+<p>The result shows both the performance (MB/s) of compression/decompression 
and encoding/decoding, and the data savings on the HFile.</p>
+<div class="listingblock">
+<div class="content">
+<pre>$ bin/hbase org.apache.hadoop.hbase.regionserver.DataBlockEncodingTool
+Usages: hbase org.apache.hadoop.hbase.regionserver.DataBlockEncodingTool
+        -f HFile to analyse (REQUIRED)
+        -n Maximum number of key/value pairs to process in a single benchmark 
+        -b Whether to run a benchmark to measure read throughput.
+        -c If this is specified, no correctness testing will be done.
+        -a What kind of compression algorithm use for test. Default value: GZ.
+        -t Number of times to run each benchmark. Default value: 12.
+        -omit Number of first runs of every benchmark to omit from statistics. 
Default value: 2.</pre>
 <div class="sect1">
@@ -41092,7 +41119,7 @@ 
 <div id="footer">
 <div id="footer-text">
 Version 3.0.0-SNAPSHOT<br>
-Last updated 2018-08-09 14:30:02 UTC
+Last updated 2018-08-10 14:29:54 UTC
diff --git a/bulk-loads.html b/bulk-loads.html
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--- a/bulk-loads.html
+++ b/bulk-loads.html
@@ -7,7 +7,7 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <meta name="Date-Revision-yyyymmdd" content="20180809" />
+    <meta name="Date-Revision-yyyymmdd" content="20180810" />
     <meta http-equiv="Content-Language" content="en" />
     <title>Apache HBase &#x2013;  
       Bulk Loads in Apache HBase (TM)
@@ -306,7 +306,7 @@ under the License. -->
                         <a href="";>The Apache Software 
             All rights reserved.      
-                  <li id="publishDate" class="pull-right">Last Published: 
+                  <li id="publishDate" class="pull-right">Last Published: 

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