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Downstream users + may rely on this class to handle authenticating via keytab where + long running services need access to a secure HBase cluster. + + Callers must ensure: + + <ul> + <li>HBase configuration files are in the Classpath + <li>hbase.client.keytab.file points to a valid keytab on the local filesystem + <li>hbase.client.kerberos.principal gives the Kerberos principal to use + </ul> + + <pre> + <code> + ChoreService choreService = null; + // Presumes HBase configuration files are on the classpath + final Configuration conf = HBaseConfiguration.create(); + final ScheduledChore authChore = AuthUtil.getAuthChore(conf); + if (authChore != null) { + choreService = new ChoreService("MY_APPLICATION"); + choreService.scheduleChore(authChore); + } + try { + // do application work + } finally { + if (choreService != null) { + choreService.shutdown(); + } + } + </code> + </pre> + + See the "Running Canary in a Kerberos-enabled Cluster" section of the HBase Reference Guide for + an example of configuring a user of this Auth Chore to run on a secure cluster.</div> +</li> +</ul> +</div> +<div class="summary"> +<ul class="blockList"> +<li class="blockList"> +<!-- ========== METHOD SUMMARY =========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.summary"> +<!-- --> +</a> +<h3>æ¹æ³æ¦è¦</h3> +<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="æ¹æ³æ¦è¦è¡¨, å表æ¹æ³å解é"> +<caption><span id="t0" class="activeTableTab"><span>æææ¹æ³</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">éææ¹æ³</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">å ·ä½æ¹æ³</a></span><span class="tabEnd"> </span></span></caption> +<tr> +<th class="colFirst" scope="col">éå®ç¬¦åç±»å</th> +<th class="colLast" scope="col">æ¹æ³å说æ</th> +</tr> +<tr id="i0" class="altColor"> +<td class="colFirst"><code>static <a href="../../../../org/apache/hadoop/hbase/ScheduledChore.html" title="org.apache.hadoop.hbaseä¸çç±»">ScheduledChore</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/AuthUtil.html#getAuthChore-org.apache.hadoop.conf.Configuration-">getAuthChore</a></span>(org.apache.hadoop.conf.Configuration conf)</code> +<div class="block">Checks if security is enabled and if so, launches chore for refreshing kerberos ticket.</div> +</td> +</tr> +<tr id="i1" class="rowColor"> +<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">String</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/AuthUtil.html#getGroupName-java.lang.String-">getGroupName</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">String</a> aclKey)</code> +<div class="block">Returns the actual name for a group principal (stripped of the + group prefix).</div> +</td> +</tr> +<tr id="i2" class="altColor"> +<td class="colFirst"><code>static boolean</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/AuthUtil.html#isGroupPrincipal-java.lang.String-">isGroupPrincipal</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">String</a> name)</code> +<div class="block">Returns whether or not the given name should be interpreted as a group + principal.</div> +</td> +</tr> +<tr id="i3" class="rowColor"> +<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">String</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/AuthUtil.html#toGroupEntry-java.lang.String-">toGroupEntry</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">String</a> name)</code> +<div class="block">Returns the group entry with the group prefix for a group principal.</div> +</td> +</tr> +</table> +<ul class="blockList"> +<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> +<!-- --> +</a> +<h3>ä»ç±»ç»§æ¿çæ¹æ³ java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">Object</a></h3> +<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--"; title="java.langä¸çç±»ææ¥å£">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-"; title="java.langä¸çç±»ææ¥å£">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--"; title="java.langä¸çç±»ææ¥å£">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--"; title="java.langä¸çç±»ææ¥å£">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--"; title="java.langä¸çç±»ææ¥å£">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--"; title="java.langä¸çç±»ææ¥å£">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-e xternal=true#notifyAll--" title="java.langä¸çç±»ææ¥å£">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--"; title="java.langä¸çç±»ææ¥å£">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--"; title="java.langä¸çç±»ææ¥å£">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-"; title="java.langä¸çç±»ææ¥å£">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-"; title="java.langä¸çç±»ææ¥å£">wait</a></code></li> +</ul> +</li> +</ul> +</li> +</ul> +</div> +<div class="details"> +<ul class="blockList"> +<li class="blockList"> +<!-- ============ METHOD DETAIL ========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.detail"> +<!-- --> +</a> +<h3>æ¹æ³è¯¦ç»èµæ</h3> +<a name="getAuthChore-org.apache.hadoop.conf.Configuration-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>getAuthChore</h4> +<pre>public static <a href="../../../../org/apache/hadoop/hbase/ScheduledChore.html" title="org.apache.hadoop.hbaseä¸çç±»">ScheduledChore</a> <a href="../../../../src-html/org/apache/hadoop/hbase/AuthUtil.html#line.85">getAuthChore</a>(org.apache.hadoop.conf.Configuration conf) + throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true"; title="java.ioä¸çç±»ææ¥å£">IOException</a></pre> +<div class="block">Checks if security is enabled and if so, launches chore for refreshing kerberos ticket.</div> +<dl> +<dt><span class="paramLabel">åæ°:</span></dt> +<dd><code>conf</code> - the hbase service configuration</dd> +<dt><span class="returnLabel">è¿å:</span></dt> +<dd>a ScheduledChore for renewals, if needed, and null otherwise.</dd> +<dt><span class="throwsLabel">æåº:</span></dt> +<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true"; title="java.ioä¸çç±»ææ¥å£">IOException</a></code></dd> +</dl> +</li> +</ul> +<a name="isGroupPrincipal-java.lang.String-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>isGroupPrincipal</h4> +<pre>@InterfaceAudience.Private +public static boolean <a href="../../../../src-html/org/apache/hadoop/hbase/AuthUtil.html#line.146">isGroupPrincipal</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">String</a> name)</pre> +<div class="block">Returns whether or not the given name should be interpreted as a group + principal. Currently this simply checks if the name starts with the + special group prefix character ("@").</div> +</li> +</ul> +<a name="getGroupName-java.lang.String-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>getGroupName</h4> +<pre>@InterfaceAudience.Private +public static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">String</a> <a href="../../../../src-html/org/apache/hadoop/hbase/AuthUtil.html#line.155">getGroupName</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">String</a> aclKey)</pre> +<div class="block">Returns the actual name for a group principal (stripped of the + group prefix).</div> +</li> +</ul> +<a name="toGroupEntry-java.lang.String-"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>toGroupEntry</h4> +<pre>@InterfaceAudience.Private +public static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">String</a> <a href="../../../../src-html/org/apache/hadoop/hbase/AuthUtil.html#line.167">toGroupEntry</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">String</a> name)</pre> +<div class="block">Returns the group entry with the group prefix for a group principal.</div> +</li> +</ul> +</li> +</ul> +</li> +</ul> +</div> +</div> +<!-- ========= END OF CLASS DATA ========= --> +<!-- ======= START OF BOTTOM NAVBAR ====== --> +<div class="bottomNav"><a name="navbar.bottom"> +<!-- --> +</a> +<div class="skipNav"><a href="#skip.navbar.bottom" title="è·³è¿å¯¼èªé¾æ¥">è·³è¿å¯¼èªé¾æ¥</a></div> +<a name="navbar.bottom.firstrow"> +<!-- --> +</a> +<ul class="navList" title="导èª"> +<li><a href="../../../../overview-summary.html">æ¦è§</a></li> +<li><a href="package-summary.html">ç¨åºå </a></li> +<li class="navBarCell1Rev">ç±»</li> +<li><a href="class-use/AuthUtil.html">使ç¨</a></li> +<li><a href="package-tree.html">æ </a></li> +<li><a href="../../../../deprecated-list.html">å·²è¿æ¶</a></li> +<li><a href="../../../../index-all.html">ç´¢å¼</a></li> +<li><a href="../../../../help-doc.html">帮å©</a></li> +</ul> +</div> +<div class="subNav"> +<ul class="navList"> +<li><a href="../../../../org/apache/hadoop/hbase/AsyncMetaTableAccessor.html" title="org.apache.hadoop.hbaseä¸çç±»"><span class="typeNameLink">ä¸ä¸ä¸ªç±»</span></a></li> +<li><a href="../../../../org/apache/hadoop/hbase/BaseConfigurable.html" title="org.apache.hadoop.hbaseä¸çç±»"><span class="typeNameLink">ä¸ä¸ä¸ªç±»</span></a></li> +</ul> +<ul class="navList"> +<li><a href="../../../../index.html?org/apache/hadoop/hbase/AuthUtil.html" target="_top">æ¡æ¶</a></li> +<li><a href="AuthUtil.html" target="_top">æ æ¡æ¶</a></li> +</ul> +<ul class="navList" id="allclasses_navbar_bottom"> +<li><a href="../../../../allclasses-noframe.html">ææç±»</a></li> +</ul> +<div> +<script type="text/javascript"><!-- + allClassesLink = document.getElementById("allclasses_navbar_bottom"); + if(window==top) { + allClassesLink.style.display = "block"; + } + else { + allClassesLink.style.display = "none"; + } + //--> +</script> +</div> +<div> +<ul class="subNavList"> +<li>æ¦è¦: </li> +<li>åµå¥ | </li> +<li>å段 | </li> +<li>æé å¨ | </li> +<li><a href="#method.summary">æ¹æ³</a></li> +</ul> +<ul class="subNavList"> +<li>详ç»èµæ: </li> +<li>å段 | </li> +<li>æé å¨ | </li> +<li><a href="#method.detail">æ¹æ³</a></li> +</ul> +</div> +<a name="skip.navbar.bottom"> +<!-- --> +</a></div> +<!-- ======== END OF BOTTOM NAVBAR ======= --> +<p class="legalCopy"><small>Copyright © 2007–2018 <a href="https://www.apache.org/";>The Apache Software Foundation</a>. 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title="java.langä¸çç±»ææ¥å£">java.lang.Object</a></li> +<li> +<ul class="inheritance"> +<li>org.apache.hadoop.hbase.BBKVComparator</li> +</ul> +</li> +</ul> +<div class="description"> +<ul class="blockList"> +<li class="blockList"> +<dl> +<dt>ææå·²å®ç°çæ¥å£:</dt> +<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true"; title="java.utilä¸çç±»ææ¥å£">Comparator</a></dd> +</dl> +<hr> +<br> +<pre>@InterfaceAudience.Private +public class <a href="../../../../src-html/org/apache/hadoop/hbase/BBKVComparator.html#line.64">BBKVComparator</a> +extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">Object</a> +implements <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true"; title="java.utilä¸çç±»ææ¥å£">Comparator</a></pre> +<div class="block">A comparator for case where <a href="../../../../org/apache/hadoop/hbase/ByteBufferKeyValue.html" title="org.apache.hadoop.hbaseä¸çç±»"><code>ByteBufferKeyValue</code></a> is prevalent type (BBKV + is base-type in hbase2). Takes a general comparator as fallback in case types are NOT the + expected ByteBufferKeyValue. + + <p>This is a tricked-out Comparator at heart of hbase read and write. It is in + the HOT path so we try all sorts of ugly stuff so we can go faster. See below + in this javadoc comment for the list. + + <p>Apply this comparator narrowly so it is fed exclusively ByteBufferKeyValues + as much as is possible so JIT can settle (e.g. make one per ConcurrentSkipListMap + in HStore). + + <p>Exploits specially added methods in BBKV to save on deserializations of shorts, + longs, etc: i.e. calculating the family length requires row length; pass it in + rather than recalculate it, and so on. + + <p>This comparator does static dispatch to private final methods so hotspot is comfortable + deciding inline. + + <p>Measurement has it that we almost have it so all inlines from memstore + ConcurrentSkipListMap on down to the (unsafe) intrinisics that do byte compare + and deserialize shorts and ints; needs a bit more work. + + <p>Does not take a Type to compare: i.e. it is not a Comparator<Cell> or + CellComparator<Cell> or Comparator<ByteBufferKeyValue> because that adds + another method to the hierarchy -- from compare(Object, Object) + to dynamic compare(Cell, Cell) to static private compare -- and inlining doesn't happen if + hierarchy is too deep (it is the case here). + + <p>Be careful making changes. Compare perf before and after and look at what + hotspot ends up generating before committing change (jitwatch is helpful here). + Changing this one class doubled write throughput (HBASE-20483).</div> +</li> +</ul> +</div> +<div class="summary"> +<ul class="blockList"> +<li class="blockList"> +<!-- =========== FIELD SUMMARY =========== --> +<ul class="blockList"> +<li class="blockList"><a name="field.summary"> +<!-- --> +</a> +<h3>å段æ¦è¦</h3> +<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="å段æ¦è¦è¡¨, å表å段å解é"> +<caption><span>å段</span><span class="tabEnd"> </span></caption> +<tr> +<th class="colFirst" scope="col">éå®ç¬¦åç±»å</th> +<th class="colLast" scope="col">å段å说æ</th> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>protected static org.slf4j.Logger</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/BBKVComparator.html#LOG">LOG</a></span></code> </td> +</tr> +</table> +</li> +</ul> +<!-- ======== CONSTRUCTOR SUMMARY ======== --> +<ul class="blockList"> +<li class="blockList"><a name="constructor.summary"> +<!-- --> +</a> +<h3>æé å¨æ¦è¦</h3> +<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="æé å¨æ¦è¦è¡¨, å表æé å¨å解é"> +<caption><span>æé å¨</span><span class="tabEnd"> </span></caption> +<tr> +<th class="colOne" scope="col">æé å¨å说æ</th> +</tr> +<tr class="altColor"> +<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/BBKVComparator.html#BBKVComparator-java.util.Comparator-">BBKVComparator</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true"; title="java.utilä¸çç±»ææ¥å£">Comparator</a> fallback)</code> </td> +</tr> +</table> +</li> +</ul> +<!-- ========== METHOD SUMMARY =========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.summary"> +<!-- --> +</a> +<h3>æ¹æ³æ¦è¦</h3> +<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="æ¹æ³æ¦è¦è¡¨, å表æ¹æ³å解é"> +<caption><span id="t0" class="activeTableTab"><span>æææ¹æ³</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">å®ä¾æ¹æ³</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">å ·ä½æ¹æ³</a></span><span class="tabEnd"> </span></span></caption> +<tr> +<th class="colFirst" scope="col">éå®ç¬¦åç±»å</th> +<th class="colLast" scope="col">æ¹æ³å说æ</th> +</tr> +<tr id="i0" class="altColor"> +<td class="colFirst"><code>int</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/BBKVComparator.html#compare-java.lang.Object-java.lang.Object-">compare</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">Object</a> l, + <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">Object</a> r)</code> </td> +</tr> +</table> +<ul class="blockList"> +<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> +<!-- --> +</a> +<h3>ä»ç±»ç»§æ¿çæ¹æ³ java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">Object</a></h3> +<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--"; title="java.langä¸çç±»ææ¥å£">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-"; title="java.langä¸çç±»ææ¥å£">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--"; title="java.langä¸çç±»ææ¥å£">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--"; 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title="java.langä¸çç±»ææ¥å£">wait</a></code></li> +</ul> +<ul class="blockList"> +<li class="blockList"><a name="methods.inherited.from.class.java.util.Comparator"> +<!-- --> +</a> +<h3>ä»æ¥å£ç»§æ¿çæ¹æ³ java.util.<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true"; title="java.utilä¸çç±»ææ¥å£">Comparator</a></h3> +<code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true#comparing-java.util.function.Function-"; title="java.utilä¸çç±»ææ¥å£">comparing</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true#comparing-java.util.function.Function-java.util.Comparator-"; title="java.utilä¸çç±»ææ¥å£">comparing</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true#comparingDouble-java.util.function.ToDoubleFunction-"; title="java.utilä¸çç±»ææ¥å£">comparingDouble</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true#comparingInt-java.util.function.ToIntFunction-"; title="java.utilä¸çç±»ææ¥å£">comparingInt</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true#comparingLong-java.util.function.ToLongFunction-"; title="java.utilä¸çç±»ææ¥å£">comparingLong</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true#equals-java.lang.Object-"; title="java.utilä¸çç±»ææ¥å£">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true#naturalOrder--"; title="java.utilä¸çç±»ææ¥å£">naturalOrder</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true#nullsFirst-java.util.Comparator-"; title="java.utilä¸çç±»ææ¥å£">nullsFirst</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true#nullsLast-java.util.Comparator-"; title="java.utilä¸çç±»ææ¥å£">nullsLast</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true#reversed--"; 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title="java.utilä¸çç±»ææ¥å £">thenComparingInt</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true#thenComparingLong-java.util.function.ToLongFunction-"; title="java.utilä¸çç±»ææ¥å£">thenComparingLong</a></code></li> +</ul> +</li> +</ul> +</li> +</ul> +</div> +<div class="details"> +<ul class="blockList"> +<li class="blockList"> +<!-- ============ FIELD DETAIL =========== --> +<ul class="blockList"> +<li class="blockList"><a name="field.detail"> +<!-- --> +</a> +<h3>å段详ç»èµæ</h3> +<a name="LOG"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>LOG</h4> +<pre>protected static final org.slf4j.Logger <a href="../../../../src-html/org/apache/hadoop/hbase/BBKVComparator.html#line.65">LOG</a></pre> +</li> +</ul> +</li> +</ul> +<!-- ========= CONSTRUCTOR DETAIL ======== --> +<ul class="blockList"> +<li class="blockList"><a name="constructor.detail"> +<!-- --> +</a> +<h3>æé å¨è¯¦ç»èµæ</h3> +<a name="BBKVComparator-java.util.Comparator-"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>BBKVComparator</h4> +<pre>public <a href="../../../../src-html/org/apache/hadoop/hbase/BBKVComparator.html#line.68">BBKVComparator</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true"; title="java.utilä¸çç±»ææ¥å£">Comparator</a> fallback)</pre> +</li> +</ul> +</li> +</ul> +<!-- ============ METHOD DETAIL ========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.detail"> +<!-- --> +</a> +<h3>æ¹æ³è¯¦ç»èµæ</h3> +<a name="compare-java.lang.Object-java.lang.Object-"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>compare</h4> +<pre>public int <a href="../../../../src-html/org/apache/hadoop/hbase/BBKVComparator.html#line.73">compare</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">Object</a> l, + <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">Object</a> r)</pre> +<dl> +<dt><span class="overrideSpecifyLabel">æå®è :</span></dt> +<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true#compare-T-T-"; title="java.utilä¸çç±»ææ¥å£">compare</a></code> å¨æ¥å£ä¸ <code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true"; title="java.utilä¸çç±»ææ¥å£">Comparator</a></code></dd> +</dl> +</li> +</ul> +</li> +</ul> +</li> +</ul> +</div> +</div> +<!-- ========= END OF CLASS DATA ========= --> +<!-- ======= START OF BOTTOM NAVBAR ====== --> +<div class="bottomNav"><a name="navbar.bottom"> +<!-- --> +</a> +<div class="skipNav"><a href="#skip.navbar.bottom" title="è·³è¿å¯¼èªé¾æ¥">è·³è¿å¯¼èªé¾æ¥</a></div> +<a name="navbar.bottom.firstrow"> +<!-- --> +</a> +<ul class="navList" title="导èª"> +<li><a href="../../../../overview-summary.html">æ¦è§</a></li> +<li><a href="package-summary.html">ç¨åºå </a></li> +<li class="navBarCell1Rev">ç±»</li> +<li><a href="class-use/BBKVComparator.html">使ç¨</a></li> +<li><a href="package-tree.html">æ </a></li> +<li><a href="../../../../deprecated-list.html">å·²è¿æ¶</a></li> +<li><a href="../../../../index-all.html">ç´¢å¼</a></li> +<li><a href="../../../../help-doc.html">帮å©</a></li> +</ul> +</div> +<div class="subNav"> +<ul class="navList"> +<li><a href="../../../../org/apache/hadoop/hbase/BaseConfigurable.html" title="org.apache.hadoop.hbaseä¸çç±»"><span class="typeNameLink">ä¸ä¸ä¸ªç±»</span></a></li> +<li><a href="../../../../org/apache/hadoop/hbase/ByteBufferExtendedCell.html" title="org.apache.hadoop.hbaseä¸çç±»"><span class="typeNameLink">ä¸ä¸ä¸ªç±»</span></a></li> +</ul> +<ul class="navList"> +<li><a href="../../../../index.html?org/apache/hadoop/hbase/BBKVComparator.html" target="_top">æ¡æ¶</a></li> +<li><a href="BBKVComparator.html" target="_top">æ æ¡æ¶</a></li> +</ul> +<ul class="navList" id="allclasses_navbar_bottom"> +<li><a href="../../../../allclasses-noframe.html">ææç±»</a></li> +</ul> +<div> +<script type="text/javascript"><!-- + allClassesLink = document.getElementById("allclasses_navbar_bottom"); 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title="java.langä¸çç±»ææ¥å£">Object</a> +implements org.apache.hadoop.conf.Configurable</pre> +<div class="block">HBase version of Hadoop's Configured class that doesn't initialize the + configuration via <a href="../../../../org/apache/hadoop/hbase/BaseConfigurable.html#setConf-org.apache.hadoop.conf.Configuration-"><code>setConf(Configuration)</code></a> in the constructor, but + only sets the configuration through the <a href="../../../../org/apache/hadoop/hbase/BaseConfigurable.html#setConf-org.apache.hadoop.conf.Configuration-"><code>setConf(Configuration)</code></a> + method</div> +</li> +</ul> +</div> +<div class="summary"> +<ul class="blockList"> +<li class="blockList"> +<!-- ======== CONSTRUCTOR SUMMARY ======== --> +<ul class="blockList"> +<li class="blockList"><a name="constructor.summary"> +<!-- --> +</a> +<h3>æé å¨æ¦è¦</h3> +<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="æé å¨æ¦è¦è¡¨, å表æé å¨å解é"> +<caption><span>æé å¨</span><span class="tabEnd"> </span></caption> +<tr> +<th class="colOne" scope="col">æé å¨å说æ</th> +</tr> +<tr class="altColor"> +<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/BaseConfigurable.html#BaseConfigurable--">BaseConfigurable</a></span>()</code> </td> +</tr> +</table> +</li> +</ul> +<!-- ========== METHOD SUMMARY =========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.summary"> +<!-- --> +</a> +<h3>æ¹æ³æ¦è¦</h3> +<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="æ¹æ³æ¦è¦è¡¨, å表æ¹æ³å解é"> +<caption><span id="t0" class="activeTableTab"><span>æææ¹æ³</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">å®ä¾æ¹æ³</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">å ·ä½æ¹æ³</a></span><span class="tabEnd"> </span></span></caption> +<tr> +<th class="colFirst" scope="col">éå®ç¬¦åç±»å</th> +<th class="colLast" scope="col">æ¹æ³å说æ</th> +</tr> +<tr id="i0" class="altColor"> +<td class="colFirst"><code>org.apache.hadoop.conf.Configuration</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/BaseConfigurable.html#getConf--">getConf</a></span>()</code> </td> +</tr> +<tr id="i1" class="rowColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/BaseConfigurable.html#setConf-org.apache.hadoop.conf.Configuration-">setConf</a></span>(org.apache.hadoop.conf.Configuration conf)</code> </td> +</tr> +</table> +<ul class="blockList"> +<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> +<!-- --> +</a> +<h3>ä»ç±»ç»§æ¿çæ¹æ³ java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">Object</a></h3> +<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--"; title="java.langä¸çç±»ææ¥å£">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-"; title="java.langä¸çç±»ææ¥å£">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--"; title="java.langä¸çç±»ææ¥å£">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--"; title="java.langä¸çç±»ææ¥å£">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--"; title="java.langä¸çç±»ææ¥å£">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--"; title="java.langä¸çç±»ææ¥å£">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-e xternal=true#notifyAll--" title="java.langä¸çç±»ææ¥å£">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--"; title="java.langä¸çç±»ææ¥å£">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--"; title="java.langä¸çç±»ææ¥å£">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-"; title="java.langä¸çç±»ææ¥å£">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-"; title="java.langä¸çç±»ææ¥å£">wait</a></code></li> +</ul> +</li> +</ul> +</li> +</ul> +</div> +<div class="details"> +<ul class="blockList"> +<li class="blockList"> +<!-- ========= CONSTRUCTOR DETAIL ======== --> +<ul class="blockList"> +<li class="blockList"><a name="constructor.detail"> +<!-- --> +</a> +<h3>æé å¨è¯¦ç»èµæ</h3> +<a name="BaseConfigurable--"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>BaseConfigurable</h4> +<pre>public <a href="../../../../src-html/org/apache/hadoop/hbase/BaseConfigurable.html#line.31">BaseConfigurable</a>()</pre> +</li> +</ul> +</li> +</ul> +<!-- ============ METHOD DETAIL ========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.detail"> +<!-- --> +</a> +<h3>æ¹æ³è¯¦ç»èµæ</h3> +<a name="setConf-org.apache.hadoop.conf.Configuration-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>setConf</h4> +<pre>public void <a href="../../../../src-html/org/apache/hadoop/hbase/BaseConfigurable.html#line.36">setConf</a>(org.apache.hadoop.conf.Configuration conf)</pre> +<dl> +<dt><span class="overrideSpecifyLabel">æå®è :</span></dt> +<dd><code>setConf</code> å¨æ¥å£ä¸ <code>org.apache.hadoop.conf.Configurable</code></dd> +</dl> +</li> +</ul> +<a name="getConf--"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>getConf</h4> +<pre>public org.apache.hadoop.conf.Configuration <a href="../../../../src-html/org/apache/hadoop/hbase/BaseConfigurable.html#line.41">getConf</a>()</pre> +<dl> +<dt><span class="overrideSpecifyLabel">æå®è :</span></dt> +<dd><code>getConf</code> å¨æ¥å£ä¸ <code>org.apache.hadoop.conf.Configurable</code></dd> +</dl> +</li> +</ul> +</li> +</ul> +</li> +</ul> +</div> +</div> +<!-- ========= END OF CLASS DATA ========= --> +<!-- ======= START OF BOTTOM NAVBAR ====== --> +<div class="bottomNav"><a name="navbar.bottom"> +<!-- --> +</a> +<div class="skipNav"><a href="#skip.navbar.bottom" title="è·³è¿å¯¼èªé¾æ¥">è·³è¿å¯¼èªé¾æ¥</a></div> +<a name="navbar.bottom.firstrow"> +<!-- --> +</a> +<ul class="navList" title="导èª"> +<li><a href="../../../../overview-summary.html">æ¦è§</a></li> +<li><a href="package-summary.html">ç¨åºå </a></li> +<li class="navBarCell1Rev">ç±»</li> +<li><a href="class-use/BaseConfigurable.html">使ç¨</a></li> +<li><a href="package-tree.html">æ </a></li> +<li><a href="../../../../deprecated-list.html">å·²è¿æ¶</a></li> +<li><a href="../../../../index-all.html">ç´¢å¼</a></li> +<li><a href="../../../../help-doc.html">帮å©</a></li> +</ul> +</div> +<div class="subNav"> +<ul class="navList"> +<li><a href="../../../../org/apache/hadoop/hbase/AuthUtil.html" title="org.apache.hadoop.hbaseä¸çç±»"><span class="typeNameLink">ä¸ä¸ä¸ªç±»</span></a></li> +<li><a href="../../../../org/apache/hadoop/hbase/BBKVComparator.html" title="org.apache.hadoop.hbaseä¸çç±»"><span class="typeNameLink">ä¸ä¸ä¸ªç±»</span></a></li> +</ul> +<ul class="navList"> +<li><a href="../../../../index.html?org/apache/hadoop/hbase/BaseConfigurable.html" target="_top">æ¡æ¶</a></li> +<li><a href="BaseConfigurable.html" target="_top">æ æ¡æ¶</a></li> +</ul> +<ul class="navList" id="allclasses_navbar_bottom"> +<li><a href="../../../../allclasses-noframe.html">ææç±»</a></li> +</ul> +<div> +<script type="text/javascript"><!-- + allClassesLink = document.getElementById("allclasses_navbar_bottom"); 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+ if(window==top) { + allClassesLink.style.display = "block"; + } + else { + allClassesLink.style.display = "none"; + } + //--> +</script> +</div> +<div> +<ul class="subNavList"> +<li>æ¦è¦: </li> +<li>åµå¥ | </li> +<li>å段 | </li> +<li><a href="#constructor.summary">æé å¨</a> | </li> +<li><a href="#method.summary">æ¹æ³</a></li> +</ul> +<ul class="subNavList"> +<li>详ç»èµæ: </li> +<li>å段 | </li> +<li><a href="#constructor.detail">æé å¨</a> | </li> +<li><a href="#method.detail">æ¹æ³</a></li> +</ul> +</div> +<a name="skip.navbar.top"> +<!-- --> +</a></div> +<!-- ========= END OF TOP NAVBAR ========= --> +<!-- ======== START OF CLASS DATA ======== --> +<div class="header"> +<div class="subTitle">org.apache.hadoop.hbase</div> +<h2 title="ç±» ByteBufferExtendedCell" class="title">ç±» ByteBufferExtendedCell</h2> +</div> +<div class="contentContainer"> +<ul class="inheritance"> +<li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">java.lang.Object</a></li> +<li> +<ul class="inheritance"> +<li>org.apache.hadoop.hbase.ByteBufferExtendedCell</li> +</ul> +</li> +</ul> +<div class="description"> +<ul class="blockList"> +<li class="blockList"> +<dl> +<dt>ææå·²å®ç°çæ¥å£:</dt> +<dd><a href="../../../../org/apache/hadoop/hbase/Cell.html" title="org.apache.hadoop.hbaseä¸çæ¥å£">Cell</a>, <a href="../../../../org/apache/hadoop/hbase/ExtendedCell.html" title="org.apache.hadoop.hbaseä¸çæ¥å£">ExtendedCell</a>, <a href="../../../../org/apache/hadoop/hbase/io/HeapSize.html" title="org.apache.hadoop.hbase.ioä¸çæ¥å£">HeapSize</a>, <a href="../../../../org/apache/hadoop/hbase/RawCell.html" title="org.apache.hadoop.hbaseä¸çæ¥å£">RawCell</a></dd> +</dl> +<dl> +<dt>ç´æ¥å·²ç¥åç±»:</dt> +<dd><a href="../../../../org/apache/hadoop/hbase/ByteBufferKeyOnlyKeyValue.html" title="org.apache.hadoop.hbaseä¸çç±»">ByteBufferKeyOnlyKeyValue</a>, <a href="../../../../org/apache/hadoop/hbase/ByteBufferKeyValue.html" title="org.apache.hadoop.hbaseä¸çç±»">ByteBufferKeyValue</a>, <a href="../../../../org/apache/hadoop/hbase/util/MapReduceExtendedCell.html" title="org.apache.hadoop.hbase.utilä¸çç±»">MapReduceExtendedCell</a></dd> +</dl> +<hr> +<br> +<pre>@InterfaceAudience.Private +public abstract class <a href="../../../../src-html/org/apache/hadoop/hbase/ByteBufferExtendedCell.html#line.71">ByteBufferExtendedCell</a> +extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true"; title="java.langä¸çç±»ææ¥å£">Object</a> +implements <a href="../../../../org/apache/hadoop/hbase/ExtendedCell.html" title="org.apache.hadoop.hbaseä¸çæ¥å£">ExtendedCell</a></pre> +<div class="block">This class is a server side extension to the <a href="../../../../org/apache/hadoop/hbase/Cell.html" title="org.apache.hadoop.hbaseä¸çæ¥å£"><code>Cell</code></a> interface. It is used when the + Cell is backed by a <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true"; title="java.nioä¸çç±»ææ¥å£"><code>ByteBuffer</code></a>: i.e. <code>cell instanceof ByteBufferedCell</code>. + + <p>This class has getters for the row, column family, column qualifier, value and tags hosting + ByteBuffers. It also has getters of the *position* within a ByteBuffer where these + field bytes begin. These are needed because a single ByteBuffer may back one or many Cell + instances -- it depends on the implementation -- so the ByteBuffer position as returned by + <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true#arrayOffset--"; title="java.nioä¸çç±»ææ¥å£"><code>ByteBuffer.arrayOffset()</code></a> cannot be relied upon. 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