You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by mi...@apache.org on 2016/02/26 22:42:21 UTC

[49/51] [partial] hbase-site git commit: Published site at c5288947ddc4abae2f4036544a775ff81538df2f.

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+<span class="sourceLineNo">192</span>        // fill the results for qCount is within current range.<a name="line.192"></a>
+<span class="sourceLineNo">193</span>        while (qCount &lt;= cum) {<a name="line.193"></a>
+<span class="sourceLineNo">194</span>          if (cum == lastCum) {<a name="line.194"></a>
+<span class="sourceLineNo">195</span>            res[rIndex] = mn;<a name="line.195"></a>
+<span class="sourceLineNo">196</span>          } else {<a name="line.196"></a>
+<span class="sourceLineNo">197</span>            res[rIndex] = (long) ((qCount - lastCum) * (mx - mn) / (cum - lastCum) + mn);<a name="line.197"></a>
+<span class="sourceLineNo">198</span>          }<a name="line.198"></a>
+<span class="sourceLineNo">199</span><a name="line.199"></a>
+<span class="sourceLineNo">200</span>          // move to next quantile<a name="line.200"></a>
+<span class="sourceLineNo">201</span>          rIndex++;<a name="line.201"></a>
+<span class="sourceLineNo">202</span>          if (rIndex &gt;= quantiles.length) {<a name="line.202"></a>
+<span class="sourceLineNo">203</span>            break countsLoop;<a name="line.203"></a>
+<span class="sourceLineNo">204</span>          }<a name="line.204"></a>
+<span class="sourceLineNo">205</span>          qCount = total * quantiles[rIndex];<a name="line.205"></a>
+<span class="sourceLineNo">206</span>        }<a name="line.206"></a>
+<span class="sourceLineNo">207</span>      }<a name="line.207"></a>
+<span class="sourceLineNo">208</span>      // In case quantiles contains values &gt;= 100%<a name="line.208"></a>
+<span class="sourceLineNo">209</span>      for (; rIndex &lt; quantiles.length; rIndex++) {<a name="line.209"></a>
+<span class="sourceLineNo">210</span>        res[rIndex] = this.max.get();<a name="line.210"></a>
+<span class="sourceLineNo">211</span>      }<a name="line.211"></a>
+<span class="sourceLineNo">212</span><a name="line.212"></a>
+<span class="sourceLineNo">213</span>      return res;<a name="line.213"></a>
+<span class="sourceLineNo">214</span>    }<a name="line.214"></a>
+<span class="sourceLineNo">215</span><a name="line.215"></a>
+<span class="sourceLineNo">216</span><a name="line.216"></a>
+<span class="sourceLineNo">217</span>    long getNumAtOrBelow(long val) {<a name="line.217"></a>
+<span class="sourceLineNo">218</span>      final int targetIndex = getIndex(val);<a name="line.218"></a>
+<span class="sourceLineNo">219</span>      long totalToCurrentIndex = 0;<a name="line.219"></a>
+<span class="sourceLineNo">220</span>      for (int i = 0; i &lt;= targetIndex; i++) {<a name="line.220"></a>
+<span class="sourceLineNo">221</span>        totalToCurrentIndex += this.counts[i].get();<a name="line.221"></a>
+<span class="sourceLineNo">222</span>      }<a name="line.222"></a>
+<span class="sourceLineNo">223</span>      return  totalToCurrentIndex;<a name="line.223"></a>
+<span class="sourceLineNo">224</span>    }<a name="line.224"></a>
+<span class="sourceLineNo">225</span>  }<a name="line.225"></a>
+<span class="sourceLineNo">226</span><a name="line.226"></a>
+<span class="sourceLineNo">227</span>  // The bins counting values. It is replaced with a new one in calling of reset().<a name="line.227"></a>
+<span class="sourceLineNo">228</span>  private volatile Bins bins;<a name="line.228"></a>
+<span class="sourceLineNo">229</span><a name="line.229"></a>
+<span class="sourceLineNo">230</span>  /**<a name="line.230"></a>
+<span class="sourceLineNo">231</span>   * Constructor.<a name="line.231"></a>
+<span class="sourceLineNo">232</span>   */<a name="line.232"></a>
+<span class="sourceLineNo">233</span>  public FastLongHistogram() {<a name="line.233"></a>
+<span class="sourceLineNo">234</span>    this(DEFAULT_NBINS);<a name="line.234"></a>
+<span class="sourceLineNo">235</span>  }<a name="line.235"></a>
+<span class="sourceLineNo">236</span><a name="line.236"></a>
+<span class="sourceLineNo">237</span>  /**<a name="line.237"></a>
+<span class="sourceLineNo">238</span>   * Constructor.<a name="line.238"></a>
+<span class="sourceLineNo">239</span>   * @param numOfBins the number of bins for the histogram. A larger value results in more precise<a name="line.239"></a>
+<span class="sourceLineNo">240</span>   *          results but with lower efficiency, and vice versus.<a name="line.240"></a>
+<span class="sourceLineNo">241</span>   */<a name="line.241"></a>
+<span class="sourceLineNo">242</span>  public FastLongHistogram(int numOfBins) {<a name="line.242"></a>
+<span class="sourceLineNo">243</span>    this.bins = new Bins(numOfBins);<a name="line.243"></a>
+<span class="sourceLineNo">244</span>  }<a name="line.244"></a>
+<span class="sourceLineNo">245</span><a name="line.245"></a>
+<span class="sourceLineNo">246</span>  /**<a name="line.246"></a>
+<span class="sourceLineNo">247</span>   * Constructor setting the bins assuming a uniform distribution within a range.<a name="line.247"></a>
+<span class="sourceLineNo">248</span>   * @param numOfBins the number of bins for the histogram. A larger value results in more precise<a name="line.248"></a>
+<span class="sourceLineNo">249</span>   *          results but with lower efficiency, and vice versus.<a name="line.249"></a>
+<span class="sourceLineNo">250</span>   * @param min lower bound of the region, inclusive.<a name="line.250"></a>
+<span class="sourceLineNo">251</span>   * @param max higher bound of the region, inclusive.<a name="line.251"></a>
+<span class="sourceLineNo">252</span>   */<a name="line.252"></a>
+<span class="sourceLineNo">253</span>  public FastLongHistogram(int numOfBins, long min, long max) {<a name="line.253"></a>
+<span class="sourceLineNo">254</span>    this(numOfBins);<a name="line.254"></a>
+<span class="sourceLineNo">255</span>    Bins bins = new Bins(numOfBins);<a name="line.255"></a>
+<span class="sourceLineNo">256</span>    bins.add(min, 1);<a name="line.256"></a>
+<span class="sourceLineNo">257</span>    bins.add(max, 1);<a name="line.257"></a>
+<span class="sourceLineNo">258</span>    this.bins = new Bins(bins, numOfBins, 0.01, 0.999);<a name="line.258"></a>
+<span class="sourceLineNo">259</span>  }<a name="line.259"></a>
+<span class="sourceLineNo">260</span><a name="line.260"></a>
+<span class="sourceLineNo">261</span>  private FastLongHistogram(Bins bins) {<a name="line.261"></a>
+<span class="sourceLineNo">262</span>    this.bins = bins;<a name="line.262"></a>
+<span class="sourceLineNo">263</span>  }<a name="line.263"></a>
+<span class="sourceLineNo">264</span><a name="line.264"></a>
+<span class="sourceLineNo">265</span>  /**<a name="line.265"></a>
+<span class="sourceLineNo">266</span>   * Adds a value to the histogram.<a name="line.266"></a>
+<span class="sourceLineNo">267</span>   */<a name="line.267"></a>
+<span class="sourceLineNo">268</span>  public void add(long value, long count) {<a name="line.268"></a>
+<span class="sourceLineNo">269</span>    this.bins.add(value, count);<a name="line.269"></a>
+<span class="sourceLineNo">270</span>  }<a name="line.270"></a>
+<span class="sourceLineNo">271</span><a name="line.271"></a>
+<span class="sourceLineNo">272</span>  /**<a name="line.272"></a>
+<span class="sourceLineNo">273</span>   * Computes the quantiles give the ratios.<a name="line.273"></a>
+<span class="sourceLineNo">274</span>   */<a name="line.274"></a>
+<span class="sourceLineNo">275</span>  public long[] getQuantiles(double[] quantiles) {<a name="line.275"></a>
+<span class="sourceLineNo">276</span>    return this.bins.getQuantiles(quantiles);<a name="line.276"></a>
+<span class="sourceLineNo">277</span>  }<a name="line.277"></a>
+<span class="sourceLineNo">278</span><a name="line.278"></a>
+<span class="sourceLineNo">279</span>  public long[] getQuantiles() {<a name="line.279"></a>
+<span class="sourceLineNo">280</span>    return this.bins.getQuantiles(DEFAULT_QUANTILES);<a name="line.280"></a>
+<span class="sourceLineNo">281</span>  }<a name="line.281"></a>
+<span class="sourceLineNo">282</span><a name="line.282"></a>
+<span class="sourceLineNo">283</span>  public long getMin() {<a name="line.283"></a>
+<span class="sourceLineNo">284</span>    return this.bins.min.get();<a name="line.284"></a>
+<span class="sourceLineNo">285</span>  }<a name="line.285"></a>
+<span class="sourceLineNo">286</span><a name="line.286"></a>
+<span class="sourceLineNo">287</span>  public long getMax() {<a name="line.287"></a>
+<span class="sourceLineNo">288</span>    return this.bins.max.get();<a name="line.288"></a>
+<span class="sourceLineNo">289</span>  }<a name="line.289"></a>
+<span class="sourceLineNo">290</span><a name="line.290"></a>
+<span class="sourceLineNo">291</span>  public long getCount() {<a name="line.291"></a>
+<span class="sourceLineNo">292</span>    return this.bins.count.get();<a name="line.292"></a>
+<span class="sourceLineNo">293</span>  }<a name="line.293"></a>
+<span class="sourceLineNo">294</span><a name="line.294"></a>
+<span class="sourceLineNo">295</span>  public long getMean() {<a name="line.295"></a>
+<span class="sourceLineNo">296</span>    Bins bins = this.bins;<a name="line.296"></a>
+<span class="sourceLineNo">297</span>    long count = bins.count.get();<a name="line.297"></a>
+<span class="sourceLineNo">298</span>    long total = bins.total.get();<a name="line.298"></a>
+<span class="sourceLineNo">299</span>    if (count == 0) {<a name="line.299"></a>
+<span class="sourceLineNo">300</span>      return 0;<a name="line.300"></a>
+<span class="sourceLineNo">301</span>    }<a name="line.301"></a>
+<span class="sourceLineNo">302</span>    return total / count;<a name="line.302"></a>
+<span class="sourceLineNo">303</span>  }<a name="line.303"></a>
+<span class="sourceLineNo">304</span><a name="line.304"></a>
+<span class="sourceLineNo">305</span>  public long getNumAtOrBelow(long value) {<a name="line.305"></a>
+<span class="sourceLineNo">306</span>    return this.bins.getNumAtOrBelow(value);<a name="line.306"></a>
+<span class="sourceLineNo">307</span>  }<a name="line.307"></a>
+<span class="sourceLineNo">308</span><a name="line.308"></a>
+<span class="sourceLineNo">309</span>  /**<a name="line.309"></a>
+<span class="sourceLineNo">310</span>   * Resets the histogram for new counting.<a name="line.310"></a>
+<span class="sourceLineNo">311</span>   */<a name="line.311"></a>
+<span class="sourceLineNo">312</span>  public FastLongHistogram reset() {<a name="line.312"></a>
+<span class="sourceLineNo">313</span>    Bins oldBins = this.bins;<a name="line.313"></a>
+<span class="sourceLineNo">314</span>    this.bins = new Bins(this.bins, this.bins.counts.length - 3, 0.01, 0.99);<a name="line.314"></a>
+<span class="sourceLineNo">315</span>    return new FastLongHistogram(oldBins);<a name="line.315"></a>
+<span class="sourceLineNo">316</span>  }<a name="line.316"></a>
+<span class="sourceLineNo">317</span>}<a name="line.317"></a>
 
 
 

http://git-wip-us.apache.org/repos/asf/hbase-site/blob/55dfd6fe/book.html
----------------------------------------------------------------------
diff --git a/book.html b/book.html
index a30b213..32a0805 100644
--- a/book.html
+++ b/book.html
@@ -22503,6 +22503,42 @@ Some of the settings important to HBase are listed here.
 Defaults are current as of Hadoop 2.3.
 Check the Hadoop documentation for the most current values and recommendations.</p>
 </dd>
+<dt class="hdlist1">The HBase Balancer and HDFS Balancer are incompatible</dt>
+<dd>
+<p>The HDFS balancer attempts to spread HDFS blocks evenly among DataNodes. HBase relies
+on compactions to restore locality after a region split or failure. These two types
+of balancing do not work well together.</p>
+<div class="paragraph">
+<p>In the past, the generally accepted advice was to turn off the HDFS load balancer and rely
+on the HBase balancer, since the HDFS balancer would degrade locality. This advice
+is still valid if your HDFS version is lower than 2.7.1.</p>
+</div>
+<div class="paragraph">
+<p><a href="https://issues.apache.org/jira/browse/HDFS-6133">HDFS-6133</a> provides the ability
+to exclude a given directory from the HDFS load balancer, by setting the
+<code>dfs.datanode.block-pinning.enabled</code> property to <code>true</code> in your HDFS
+configuration and running the following hdfs command:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>$ sudo -u hdfs hdfs balancer -exclude /hbase</pre>
+</div>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+HDFS-6133 is available in HDFS 2.7.0 and higher, but HBase does not support
+running on HDFS 2.7.0, so you must be using HDFS 2.7.1 or higher to use this feature
+with HBase.
+</td>
+</tr>
+</table>
+</div>
+</dd>
 </dl>
 </div>
 <div class="paragraph">
@@ -28971,36 +29007,55 @@ Check the versions to be sure they are appropriate.</p>
 </div>
 <div class="listingblock">
 <div class="content">
-<pre class="CodeRay highlight"><code data-lang="xml"><span class="tag">&lt;dependency&gt;</span>
-    <span class="tag">&lt;groupId&gt;</span>org.apache.hadoop<span class="tag">&lt;/groupId&gt;</span>
-    <span class="tag">&lt;artifactId&gt;</span>hadoop-common<span class="tag">&lt;/artifactId&gt;</span>
-    <span class="tag">&lt;version&gt;</span>2.0.0<span class="tag">&lt;/version&gt;</span>
+<pre class="CodeRay highlight"><code data-lang="xml"><span class="tag">&lt;properties&gt;</span>
+  <span class="tag">&lt;hbase.version&gt;</span>2.0.0-SNAPSHOT<span class="tag">&lt;/hbase.version&gt;</span>
+  <span class="tag">&lt;hadoop.version&gt;</span>2.7.1<span class="tag">&lt;/hadoop.version&gt;</span>
+<span class="tag">&lt;/properties&gt;</span>
+
+<span class="tag">&lt;dependencies&gt;</span>
+  <span class="tag">&lt;dependency&gt;</span>
+    <span class="tag">&lt;groupId&gt;</span>org.apache.hbase<span class="tag">&lt;/groupId&gt;</span>
+    <span class="tag">&lt;artifactId&gt;</span>hbase-server<span class="tag">&lt;/artifactId&gt;</span>
+    <span class="tag">&lt;version&gt;</span>${hbase.version}<span class="tag">&lt;/version&gt;</span>
+    <span class="tag">&lt;scope&gt;</span>test<span class="tag">&lt;/scope&gt;</span>
+  <span class="tag">&lt;/dependency&gt;</span>
+  <span class="tag">&lt;dependency&gt;</span>
+    <span class="tag">&lt;groupId&gt;</span>org.apache.hbase<span class="tag">&lt;/groupId&gt;</span>
+    <span class="tag">&lt;artifactId&gt;</span>hbase-server<span class="tag">&lt;/artifactId&gt;</span>
+    <span class="tag">&lt;version&gt;</span>${hbase.version}<span class="tag">&lt;/version&gt;</span>
     <span class="tag">&lt;type&gt;</span>test-jar<span class="tag">&lt;/type&gt;</span>
     <span class="tag">&lt;scope&gt;</span>test<span class="tag">&lt;/scope&gt;</span>
-<span class="tag">&lt;/dependency&gt;</span>
-
-<span class="tag">&lt;dependency&gt;</span>
+  <span class="tag">&lt;/dependency&gt;</span>
+  <span class="tag">&lt;dependency&gt;</span>
     <span class="tag">&lt;groupId&gt;</span>org.apache.hbase<span class="tag">&lt;/groupId&gt;</span>
-    <span class="tag">&lt;artifactId&gt;</span>hbase<span class="tag">&lt;/artifactId&gt;</span>
-    <span class="tag">&lt;version&gt;</span>0.98.3<span class="tag">&lt;/version&gt;</span>
+    <span class="tag">&lt;artifactId&gt;</span>hbase-hadoop-compat<span class="tag">&lt;/artifactId&gt;</span>
+    <span class="tag">&lt;version&gt;</span>${hbase.version}<span class="tag">&lt;/version&gt;</span>
     <span class="tag">&lt;type&gt;</span>test-jar<span class="tag">&lt;/type&gt;</span>
     <span class="tag">&lt;scope&gt;</span>test<span class="tag">&lt;/scope&gt;</span>
-<span class="tag">&lt;/dependency&gt;</span>
+  <span class="tag">&lt;/dependency&gt;</span>
 
-<span class="tag">&lt;dependency&gt;</span>
+  <span class="tag">&lt;dependency&gt;</span>
     <span class="tag">&lt;groupId&gt;</span>org.apache.hadoop<span class="tag">&lt;/groupId&gt;</span>
-    <span class="tag">&lt;artifactId&gt;</span>hadoop-hdfs<span class="tag">&lt;/artifactId&gt;</span>
-    <span class="tag">&lt;version&gt;</span>2.0.0<span class="tag">&lt;/version&gt;</span>
+    <span class="tag">&lt;artifactId&gt;</span>hadoop-common<span class="tag">&lt;/artifactId&gt;</span>
+    <span class="tag">&lt;version&gt;</span>${hadoop.version}<span class="tag">&lt;/version&gt;</span>
     <span class="tag">&lt;type&gt;</span>test-jar<span class="tag">&lt;/type&gt;</span>
     <span class="tag">&lt;scope&gt;</span>test<span class="tag">&lt;/scope&gt;</span>
-<span class="tag">&lt;/dependency&gt;</span>
-
-<span class="tag">&lt;dependency&gt;</span>
+  <span class="tag">&lt;/dependency&gt;</span>
+  <span class="tag">&lt;dependency&gt;</span>
+    <span class="tag">&lt;groupId&gt;</span>org.apache.hbase<span class="tag">&lt;/groupId&gt;</span>
+    <span class="tag">&lt;artifactId&gt;</span>hbase-hadoop2-compat<span class="tag">&lt;/artifactId&gt;</span>
+    <span class="tag">&lt;version&gt;</span>${hbase.version}<span class="tag">&lt;/version&gt;</span>
+    <span class="tag">&lt;type&gt;</span>test-jar<span class="tag">&lt;/type&gt;</span>
+    <span class="tag">&lt;scope&gt;</span>test<span class="tag">&lt;/scope&gt;</span>
+  <span class="tag">&lt;/dependency&gt;</span>
+  <span class="tag">&lt;dependency&gt;</span>
     <span class="tag">&lt;groupId&gt;</span>org.apache.hadoop<span class="tag">&lt;/groupId&gt;</span>
     <span class="tag">&lt;artifactId&gt;</span>hadoop-hdfs<span class="tag">&lt;/artifactId&gt;</span>
-    <span class="tag">&lt;version&gt;</span>2.0.0<span class="tag">&lt;/version&gt;</span>
+    <span class="tag">&lt;version&gt;</span>${hadoop.version}<span class="tag">&lt;/version&gt;</span>
+    <span class="tag">&lt;type&gt;</span>test-jar<span class="tag">&lt;/type&gt;</span>
     <span class="tag">&lt;scope&gt;</span>test<span class="tag">&lt;/scope&gt;</span>
-<span class="tag">&lt;/dependency&gt;</span></code></pre>
+  <span class="tag">&lt;/dependency&gt;</span>
+<span class="tag">&lt;/dependencies&gt;</span></code></pre>
 </div>
 </div>
 <div class="paragraph">
@@ -29011,7 +29066,8 @@ Check the versions to be sure they are appropriate.</p>
 <pre class="CodeRay highlight"><code data-lang="java"><span class="directive">public</span> <span class="type">class</span> <span class="class">MyHBaseIntegrationTest</span> {
     <span class="directive">private</span> <span class="directive">static</span> HBaseTestingUtility utility;
     <span class="type">byte</span><span class="type">[]</span> CF = <span class="string"><span class="delimiter">&quot;</span><span class="content">CF</span><span class="delimiter">&quot;</span></span>.getBytes();
-    <span class="type">byte</span><span class="type">[]</span> QUALIFIER = <span class="string"><span class="delimiter">&quot;</span><span class="content">CQ-1</span><span class="delimiter">&quot;</span></span>.getBytes();
+    <span class="type">byte</span><span class="type">[]</span> CQ1 = <span class="string"><span class="delimiter">&quot;</span><span class="content">CQ-1</span><span class="delimiter">&quot;</span></span>.getBytes();
+    <span class="type">byte</span><span class="type">[]</span> CQ2 = <span class="string"><span class="delimiter">&quot;</span><span class="content">CQ-2</span><span class="delimiter">&quot;</span></span>.getBytes();
 
     <span class="annotation">@Before</span>
     <span class="directive">public</span> <span class="type">void</span> setup() <span class="directive">throws</span> <span class="exception">Exception</span> {
@@ -29021,8 +29077,7 @@ Check the versions to be sure they are appropriate.</p>
 
     <span class="annotation">@Test</span>
         <span class="directive">public</span> <span class="type">void</span> testInsert() <span class="directive">throws</span> <span class="exception">Exception</span> {
-                HTableInterface table = utility.createTable(Bytes.toBytes(<span class="string"><span class="delimiter">&quot;</span><span class="content">MyTest</span><span class="delimiter">&quot;</span></span>),
-                                Bytes.toBytes(<span class="string"><span class="delimiter">&quot;</span><span class="content">CF</span><span class="delimiter">&quot;</span></span>));
+                HTableInterface table = utility.createTable(Bytes.toBytes(<span class="string"><span class="delimiter">&quot;</span><span class="content">MyTest</span><span class="delimiter">&quot;</span></span>), CF);
                 HBaseTestObj obj = <span class="keyword">new</span> HBaseTestObj();
                 obj.setRowKey(<span class="string"><span class="delimiter">&quot;</span><span class="content">ROWKEY-1</span><span class="delimiter">&quot;</span></span>);
                 obj.setData1(<span class="string"><span class="delimiter">&quot;</span><span class="content">DATA-1</span><span class="delimiter">&quot;</span></span>);
@@ -33189,7 +33244,7 @@ The server will return cellblocks compressed using this same compressor as long
 <div id="footer">
 <div id="footer-text">
 Version 2.0.0-SNAPSHOT<br>
-Last updated 2016-02-24 14:43:43 UTC
+Last updated 2016-02-26 18:35:15 UTC
 </div>
 </div>
 </body>

http://git-wip-us.apache.org/repos/asf/hbase-site/blob/55dfd6fe/bulk-loads.html
----------------------------------------------------------------------
diff --git a/bulk-loads.html b/bulk-loads.html
index ee71aa8..ca7c1b7 100644
--- a/bulk-loads.html
+++ b/bulk-loads.html
@@ -7,7 +7,7 @@
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <meta name="Date-Revision-yyyymmdd" content="20160224" />
+    <meta name="Date-Revision-yyyymmdd" content="20160226" />
     <meta http-equiv="Content-Language" content="en" />
     <title>Apache HBase &#x2013;  
       Bulk Loads in Apache HBase (TM)
@@ -305,7 +305,7 @@ under the License. -->
                         <a href="http://www.apache.org/">The Apache Software Foundation</a>.
             All rights reserved.      
                     
-                  <li id="publishDate" class="pull-right">Last Published: 2016-02-24</li>
+                  <li id="publishDate" class="pull-right">Last Published: 2016-02-26</li>
             </p>
                 </div>