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title="class or interface in java.lang">java.lang.Object</a></li> +<li> +<ul class="inheritance"> +<li><a href="../../../../../org/apache/hadoop/hbase/client/RetryingCallerInterceptor.html" title="class in org.apache.hadoop.hbase.client">org.apache.hadoop.hbase.client.RetryingCallerInterceptor</a></li> +<li> +<ul class="inheritance"> +<li>org.apache.hadoop.hbase.client.PreemptiveFastFailInterceptor</li> +</ul> +</li> +</ul> +</li> +</ul> +<div class="description"> +<ul class="blockList"> +<li class="blockList"> +<hr> +<br> +<pre><a href="../../../../../org/apache/hadoop/hbase/classification/InterfaceAudience.Private.html" title="annotation in org.apache.hadoop.hbase.classification">@InterfaceAudience.Private</a> + class <a href="../../../../../src-html/org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#line.74">PreemptiveFastFailInterceptor</a> +extends <a href="../../../../../org/apache/hadoop/hbase/client/RetryingCallerInterceptor.html" title="class in org.apache.hadoop.hbase.client">RetryingCallerInterceptor</a></pre> +<div class="block">The concrete <a href="../../../../../org/apache/hadoop/hbase/client/RetryingCallerInterceptor.html" title="class in org.apache.hadoop.hbase.client"><code>RetryingCallerInterceptor</code></a> class that implements the preemptive fast fail + feature. + + The motivation is as follows : + In case where a large number of clients try and talk to a particular region server in hbase, if + the region server goes down due to network problems, we might end up in a scenario where + the clients would go into a state where they all start to retry. + This behavior will set off many of the threads in pretty much the same path and they all would be + sleeping giving rise to a state where the client either needs to create more threads to send new + requests to other hbase machines or block because the client cannot create anymore threads. + + In most cases the clients might prefer to have a bound on the number of threads that are created + in order to send requests to hbase. This would mostly result in the client thread starvation. + + To circumvent this problem, the approach that is being taken here under is to let 1 of the many + threads who are trying to contact the regionserver with connection problems and let the other + threads get a <a href="../../../../../org/apache/hadoop/hbase/exceptions/PreemptiveFastFailException.html" title="class in org.apache.hadoop.hbase.exceptions"><code>PreemptiveFastFailException</code></a> so that they can move on and take other + requests. + + This would give the client more flexibility on the kind of action he would want to take in cases + where the regionserver is down. He can either discard the requests and send a nack upstream + faster or have an application level retry or buffer the requests up so as to send them down to + hbase later.</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>Field Summary</h3> +<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> +<caption><span>Fields</span><span class="tabEnd"> </span></caption> +<tr> +<th class="colFirst" scope="col">Modifier and Type</th> +<th class="colLast" scope="col">Field and Description</th> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>protected long</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#failureMapCleanupIntervalMilliSec">failureMapCleanupIntervalMilliSec</a></strong></code> </td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>private long</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#fastFailClearingTimeMilliSec">fastFailClearingTimeMilliSec</a></strong></code> </td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>protected long</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#fastFailThresholdMilliSec">fastFailThresholdMilliSec</a></strong></code> </td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>protected long</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#lastFailureMapCleanupTimeMilliSec">lastFailureMapCleanupTimeMilliSec</a></strong></code> </td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>private static org.apache.commons.logging.Log</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#LOG">LOG</a></strong></code> </td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>protected <a href="http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ConcurrentMap.html?is-external=true"; title="class or interface in java.util.concurrent">ConcurrentMap</a><<a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="../../../../../org/apache/hadoop/hbase/client/FailureInfo.html" title="class in org.apache.hadoop.hbase.client">FailureInfo</a>></code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#repeatedFailuresMap">repeatedFailuresMap</a></strong></code> </td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>private <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ThreadLocal.html?is-external=true"; title="class or interface in java.lang">ThreadLocal</a><org.apache.commons.lang.mutable.MutableBoolean></code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#threadRetryingInFastFailMode">threadRetryingInFastFailMode</a></strong></code> </td> +</tr> +</table> +</li> +</ul> +<!-- ======== CONSTRUCTOR SUMMARY ======== --> +<ul class="blockList"> +<li class="blockList"><a name="constructor_summary"> +<!-- --> +</a> +<h3>Constructor Summary</h3> +<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> +<caption><span>Constructors</span><span class="tabEnd"> </span></caption> +<tr> +<th class="colOne" scope="col">Constructor and Description</th> +</tr> +<tr class="altColor"> +<td class="colOne"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#PreemptiveFastFailInterceptor(org.apache.hadoop.conf.Configuration)">PreemptiveFastFailInterceptor</a></strong>(org.apache.hadoop.conf.Configuration conf)</code> </td> +</tr> +</table> +</li> +</ul> +<!-- ========== METHOD SUMMARY =========== --> +<ul class="blockList"> +<li class="blockList"><a name="method_summary"> +<!-- --> +</a> +<h3>Method Summary</h3> +<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> +<caption><span>Methods</span><span class="tabEnd"> </span></caption> +<tr> +<th class="colFirst" scope="col">Modifier and Type</th> +<th class="colLast" scope="col">Method and Description</th> +</tr> +<tr class="altColor"> +<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/client/RetryingCallerInterceptorContext.html" title="class in org.apache.hadoop.hbase.client">RetryingCallerInterceptorContext</a></code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#createEmptyContext()">createEmptyContext</a></strong>()</code> +<div class="block">This returns the context object for the current call.</div> +</td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>private boolean</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#currentThreadInFastFailMode()">currentThreadInFastFailMode</a></strong>()</code> +<div class="block">Checks to see if the current thread is already in FastFail mode for *some* + server.</div> +</td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#handleFailure(org.apache.hadoop.hbase.client.FastFailInterceptorContext,%20java.lang.Throwable)">handleFailure</a></strong>(<a href="../../../../../org/apache/hadoop/hbase/client/FastFailInterceptorContext.html" title="class in org.apache.hadoop.hbase.client">FastFailInterceptorContext</a> context, + <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Throwable.html?is-external=true"; title="class or interface in java.lang">Throwable</a> t)</code> </td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#handleFailure(org.apache.hadoop.hbase.client.RetryingCallerInterceptorContext,%20java.lang.Throwable)">handleFailure</a></strong>(<a href="../../../../../org/apache/hadoop/hbase/client/RetryingCallerInterceptorContext.html" title="class in org.apache.hadoop.hbase.client">RetryingCallerInterceptorContext</a> context, + <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Throwable.html?is-external=true"; title="class or interface in java.lang">Throwable</a> t)</code> +<div class="block">Call this function in case we caught a failure during retries.</div> +</td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>private void</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#handleFailureToServer(org.apache.hadoop.hbase.ServerName,%20java.lang.Throwable)">handleFailureToServer</a></strong>(<a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> serverName, + <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Throwable.html?is-external=true"; title="class or interface in java.lang">Throwable</a> t)</code> +<div class="block">Handles failures encountered when communicating with a server.</div> +</td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#handleThrowable(java.lang.Throwable,%20org.apache.hadoop.hbase.ServerName,%20org.apache.commons.lang.mutable.MutableBoolean)">handleThrowable</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Throwable.html?is-external=true"; title="class or interface in java.lang">Throwable</a> t1, + <a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> serverName, + org.apache.commons.lang.mutable.MutableBoolean couldNotCommunicateWithServer)</code> </td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>private boolean</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#inFastFailMode(org.apache.hadoop.hbase.ServerName)">inFastFailMode</a></strong>(<a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> server)</code> +<div class="block">Checks to see if we are in the Fast fail mode for requests to the server.</div> +</td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#intercept(org.apache.hadoop.hbase.client.FastFailInterceptorContext)">intercept</a></strong>(<a href="../../../../../org/apache/hadoop/hbase/client/FastFailInterceptorContext.html" title="class in org.apache.hadoop.hbase.client">FastFailInterceptorContext</a> context)</code> </td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#intercept(org.apache.hadoop.hbase.client.RetryingCallerInterceptorContext)">intercept</a></strong>(<a href="../../../../../org/apache/hadoop/hbase/client/RetryingCallerInterceptorContext.html" title="class in org.apache.hadoop.hbase.client">RetryingCallerInterceptorContext</a> context)</code> +<div class="block">Call this function alongside the actual call done on the callable.</div> +</td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>private boolean</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#isConnectionException(java.lang.Throwable)">isConnectionException</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Throwable.html?is-external=true"; title="class or interface in java.lang">Throwable</a> e)</code> +<div class="block">Check if the exception is something that indicates that we cannot + contact/communicate with the server.</div> +</td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>protected boolean</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#isServerInFailureMap(org.apache.hadoop.hbase.ServerName)">isServerInFailureMap</a></strong>(<a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> serverName)</code> </td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>protected void</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#occasionallyCleanupFailureInformation()">occasionallyCleanupFailureInformation</a></strong>()</code> +<div class="block">Occasionally cleans up unused information in repeatedFailuresMap.</div> +</td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>protected boolean</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#shouldRetryInspiteOfFastFail(org.apache.hadoop.hbase.client.FailureInfo)">shouldRetryInspiteOfFastFail</a></strong>(<a href="../../../../../org/apache/hadoop/hbase/client/FailureInfo.html" title="class in org.apache.hadoop.hbase.client">FailureInfo</a> fInfo)</code> +<div class="block">Check to see if the client should try to connnect to the server, inspite of + knowing that it is in the fast fail mode.</div> +</td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a></code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#toString()">toString</a></strong>()</code> </td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>private <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Throwable.html?is-external=true"; title="class or interface in java.lang">Throwable</a></code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#translateException(java.lang.Throwable)">translateException</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Throwable.html?is-external=true"; title="class or interface in java.lang">Throwable</a> t)</code> </td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#updateFailureInfo(org.apache.hadoop.hbase.client.FastFailInterceptorContext)">updateFailureInfo</a></strong>(<a href="../../../../../org/apache/hadoop/hbase/client/FastFailInterceptorContext.html" title="class in org.apache.hadoop.hbase.client">FastFailInterceptorContext</a> context)</code> </td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#updateFailureInfo(org.apache.hadoop.hbase.client.RetryingCallerInterceptorContext)">updateFailureInfo</a></strong>(<a href="../../../../../org/apache/hadoop/hbase/client/RetryingCallerInterceptorContext.html" title="class in org.apache.hadoop.hbase.client">RetryingCallerInterceptorContext</a> context)</code> +<div class="block">Call this function to update at the end of the retry.</div> +</td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>private void</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#updateFailureInfoForServer(org.apache.hadoop.hbase.ServerName,%20org.apache.hadoop.hbase.client.FailureInfo,%20boolean,%20boolean,%20boolean)">updateFailureInfoForServer</a></strong>(<a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> server, + <a href="../../../../../org/apache/hadoop/hbase/client/FailureInfo.html" title="class in org.apache.hadoop.hbase.client">FailureInfo</a> fInfo, + boolean didTry, + boolean couldNotCommunicate, + boolean retryDespiteFastFailMode)</code> +<div class="block">This function updates the Failure info for a particular server after the + attempt to</div> +</td> +</tr> +</table> +<ul class="blockList"> +<li class="blockList"><a name="methods_inherited_from_class_java.lang.Object"> +<!-- --> +</a> +<h3>Methods inherited from class java.lang.<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true"; 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title="class or interface in java.lang">Throwable</a> t) + throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true"; title="class or interface in java.io">IOException</a></pre> +<dl><dt><span class="strong">Throws:</span></dt> +<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true"; title="class or interface in java.io">IOException</a></code></dd></dl> +</li> +</ul> +<a name="isConnectionException(java.lang.Throwable)"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>isConnectionException</h4> +<pre>private boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#line.219">isConnectionException</a>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Throwable.html?is-external=true"; title="class or interface in java.lang">Throwable</a> e)</pre> +<div class="block">Check if the exception is something that indicates that we cannot + contact/communicate with the server.</div> +<dl><dt><span class="strong">Parameters:</span></dt><dd><code>e</code> - </dd> +<dt><span class="strong">Returns:</span></dt><dd>true when exception indicates that the client wasn't able to make contact with server</dd></dl> +</li> +</ul> +<a name="occasionallyCleanupFailureInformation()"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>occasionallyCleanupFailureInformation</h4> +<pre>protected void <a href="../../../../../src-html/org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#line.240">occasionallyCleanupFailureInformation</a>()</pre> +<div class="block">Occasionally cleans up unused information in repeatedFailuresMap. + + repeatedFailuresMap stores the failure information for all remote hosts + that had failures. 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: The context object that we obtained previously.</dd><dd><code>t</code> - : The exception that we caught in this particular try</dd> +<dt><span class="strong">Throws:</span></dt> +<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true"; title="class or interface in java.io">IOException</a></code></dd></dl> +</li> +</ul> +<a name="updateFailureInfo(org.apache.hadoop.hbase.client.RetryingCallerInterceptorContext)"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>updateFailureInfo</h4> +<pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#line.386">updateFailureInfo</a>(<a href="../../../../../org/apache/hadoop/hbase/client/RetryingCallerInterceptorContext.html" title="class in org.apache.hadoop.hbase.client">RetryingCallerInterceptorContext</a> context)</pre> +<div class="block"><strong>Description copied from class: <code><a href="../../../../../org/apache/hadoop/hbase/client/RetryingCallerInterceptor.html#updateFailureInfo(org.apache.hadoop.hbase.client.RetryingCallerInterceptorContext)">RetryingCallerInterceptor</a></code></strong></div> +<div class="block">Call this function to update at the end of the retry. This is not necessary + to happen.</div> +<dl> +<dt><strong>Specified by:</strong></dt> +<dd><code><a href="../../../../../org/apache/hadoop/hbase/client/RetryingCallerInterceptor.html#updateFailureInfo(org.apache.hadoop.hbase.client.RetryingCallerInterceptorContext)">updateFailureInfo</a></code> in class <code><a href="../../../../../org/apache/hadoop/hbase/client/RetryingCallerInterceptor.html" title="class in org.apache.hadoop.hbase.client">RetryingCallerInterceptor</a></code></dd> +</dl> +</li> +</ul> +<a name="createEmptyContext()"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>createEmptyContext</h4> +<pre>public <a href="../../../../../org/apache/hadoop/hbase/client/RetryingCallerInterceptorContext.html" title="class in org.apache.hadoop.hbase.client">RetryingCallerInterceptorContext</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#line.393">createEmptyContext</a>()</pre> +<div class="block"><strong>Description copied from class: <code><a href="../../../../../org/apache/hadoop/hbase/client/RetryingCallerInterceptor.html#createEmptyContext()">RetryingCallerInterceptor</a></code></strong></div> +<div class="block">This returns the context object for the current call.</div> +<dl> +<dt><strong>Specified by:</strong></dt> +<dd><code><a href="../../../../../org/apache/hadoop/hbase/client/RetryingCallerInterceptor.html#createEmptyContext()">createEmptyContext</a></code> in class <code><a href="../../../../../org/apache/hadoop/hbase/client/RetryingCallerInterceptor.html" title="class in org.apache.hadoop.hbase.client">RetryingCallerInterceptor</a></code></dd> +<dt><span class="strong">Returns:</span></dt><dd>context : the context that needs to be used during this call.</dd></dl> +</li> +</ul> +<a name="isServerInFailureMap(org.apache.hadoop.hbase.ServerName)"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>isServerInFailureMap</h4> +<pre>protected boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#line.397">isServerInFailureMap</a>(<a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> serverName)</pre> +</li> +</ul> +<a name="toString()"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>toString</h4> +<pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html#line.402">toString</a>()</pre> +<dl> +<dt><strong>Specified by:</strong></dt> +<dd><code><a href="../../../../../org/apache/hadoop/hbase/client/RetryingCallerInterceptor.html#toString()">toString</a></code> in class <code><a href="../../../../../org/apache/hadoop/hbase/client/RetryingCallerInterceptor.html" title="class in org.apache.hadoop.hbase.client">RetryingCallerInterceptor</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><a href="#skip-navbar_bottom" title="Skip navigation links"></a><a name="navbar_bottom_firstrow"> +<!-- --> +</a> +<ul class="navList" title="Navigation"> +<li><a href="../../../../../overview-summary.html">Overview</a></li> +<li><a href="package-summary.html">Package</a></li> +<li class="navBarCell1Rev">Class</li> +<li><a href="class-use/PreemptiveFastFailInterceptor.html">Use</a></li> +<li><a href="package-tree.html">Tree</a></li> +<li><a href="../../../../../deprecated-list.html">Deprecated</a></li> +<li><a href="../../../../../index-all.html">Index</a></li> +<li><a href="../../../../../help-doc.html">Help</a></li> +</ul> +</div> +<div class="subNav"> +<ul class="navList"> +<li><a href="../../../../../org/apache/hadoop/hbase/client/PerClientRandomNonceGenerator.html" title="class in org.apache.hadoop.hbase.client"><span class="strong">Prev Class</span></a></li> +<li><a href="../../../../../org/apache/hadoop/hbase/client/Put.html" title="class in org.apache.hadoop.hbase.client"><span class="strong">Next Class</span></a></li> +</ul> +<ul class="navList"> +<li><a href="../../../../../index.html?org/apache/hadoop/hbase/client/PreemptiveFastFailInterceptor.html" target="_top">Frames</a></li> +<li><a href="PreemptiveFastFailInterceptor.html" target="_top">No Frames</a></li> +</ul> +<ul class="navList" id="allclasses_navbar_bottom"> +<li><a href="../../../../../allclasses-noframe.html">All Classes</a></li> +</ul> +<div> +<script type="text/javascript"><!-- + allClassesLink = document.getElementById("allclasses_navbar_bottom"); 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http://git-wip-us.apache.org/repos/asf/hbase/blob/a00babbc/devapidocs/org/apache/hadoop/hbase/client/Registry.html ---------------------------------------------------------------------- diff --git a/devapidocs/org/apache/hadoop/hbase/client/Registry.html b/devapidocs/org/apache/hadoop/hbase/client/Registry.html new file mode 100644 index 0000000..88b619a --- /dev/null +++ b/devapidocs/org/apache/hadoop/hbase/client/Registry.html @@ -0,0 +1,263 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd";> +<!-- NewPage --> +<html lang="en"> +<head> +<meta http-equiv="Content-Type" content="text/html" charset="UTF-8"> +<title>Registry (Apache HBase 2.0.0-SNAPSHOT API)</title> +<link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style"> +</head> +<body> +<script type="text/javascript"><!-- + if (location.href.indexOf('is-external=true') == -1) { + parent.document.title="Registry (Apache HBase 2.0.0-SNAPSHOT API)"; 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+ if(window==top) { + allClassesLink.style.display = "block"; + } + else { + allClassesLink.style.display = "none"; + } + //--> +</script> +</div> +<div> +<ul class="subNavList"> +<li>Summary: </li> +<li>Nested | </li> +<li>Field | </li> +<li>Constr | </li> +<li><a href="#method_summary">Method</a></li> +</ul> +<ul class="subNavList"> +<li>Detail: </li> +<li>Field | </li> +<li>Constr | </li> +<li><a href="#method_detail">Method</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.client</div> +<h2 title="Interface Registry" class="title">Interface Registry</h2> +</div> +<div class="contentContainer"> +<div class="description"> +<ul class="blockList"> +<li class="blockList"> +<dl> +<dt>All Known Implementing Classes:</dt> +<dd><a href="../../../../../org/apache/hadoop/hbase/client/ZooKeeperRegistry.html" title="class in org.apache.hadoop.hbase.client">ZooKeeperRegistry</a></dd> +</dl> +<hr> +<br> +<pre><a href="../../../../../org/apache/hadoop/hbase/classification/InterfaceAudience.Private.html" title="annotation in org.apache.hadoop.hbase.classification">@InterfaceAudience.Private</a> +interface <a href="../../../../../src-html/org/apache/hadoop/hbase/client/Registry.html#line.31">Registry</a></pre> +<div class="block">Cluster registry. + Implementations hold cluster information such as this cluster's id, location of hbase:meta, etc. + Internal use only.</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>Method Summary</h3> +<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> +<caption><span>Methods</span><span class="tabEnd"> </span></caption> +<tr> +<th class="colFirst" scope="col">Modifier and Type</th> +<th class="colLast" scope="col">Method and Description</th> +</tr> +<tr class="altColor"> +<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a></code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/Registry.html#getClusterId()">getClusterId</a></strong>()</code> </td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>int</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/Registry.html#getCurrentNrHRS()">getCurrentNrHRS</a></strong>()</code> </td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/RegionLocations.html" title="class in org.apache.hadoop.hbase">RegionLocations</a></code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/Registry.html#getMetaRegionLocation()">getMetaRegionLocation</a></strong>()</code> </td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/Registry.html#init(org.apache.hadoop.hbase.client.Connection)">init</a></strong>(<a href="../../../../../org/apache/hadoop/hbase/client/Connection.html" title="interface in org.apache.hadoop.hbase.client">Connection</a> connection)</code> </td> +</tr> +</table> +</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>Method Detail</h3> +<a name="init(org.apache.hadoop.hbase.client.Connection)"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>init</h4> +<pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/client/Registry.html#line.35">init</a>(<a href="../../../../../org/apache/hadoop/hbase/client/Connection.html" title="interface in org.apache.hadoop.hbase.client">Connection</a> connection)</pre> +<dl><dt><span class="strong">Parameters:</span></dt><dd><code>connection</code> - </dd></dl> +</li> +</ul> +<a name="getMetaRegionLocation()"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>getMetaRegionLocation</h4> +<pre><a href="../../../../../org/apache/hadoop/hbase/RegionLocations.html" title="class in org.apache.hadoop.hbase">RegionLocations</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/Registry.html#line.41">getMetaRegionLocation</a>() + throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true"; title="class or interface in java.io">IOException</a></pre> +<dl><dt><span class="strong">Returns:</span></dt><dd>Meta region location</dd> +<dt><span class="strong">Throws:</span></dt> +<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true"; title="class or interface in java.io">IOException</a></code></dd></dl> +</li> +</ul> +<a name="getClusterId()"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>getClusterId</h4> +<pre><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/Registry.html#line.46">getClusterId</a>()</pre> +<dl><dt><span class="strong">Returns:</span></dt><dd>Cluster id.</dd></dl> +</li> +</ul> +<a name="getCurrentNrHRS()"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>getCurrentNrHRS</h4> +<pre>int <a href="../../../../../src-html/org/apache/hadoop/hbase/client/Registry.html#line.52">getCurrentNrHRS</a>() + throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true"; title="class or interface in java.io">IOException</a></pre> +<dl><dt><span class="strong">Returns:</span></dt><dd>Count of 'running' regionservers</dd> +<dt><span class="strong">Throws:</span></dt> +<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true"; title="class or interface in java.io">IOException</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><a href="#skip-navbar_bottom" title="Skip navigation links"></a><a name="navbar_bottom_firstrow"> +<!-- --> +</a> +<ul class="navList" title="Navigation"> +<li><a href="../../../../../overview-summary.html">Overview</a></li> +<li><a href="package-summary.html">Package</a></li> +<li class="navBarCell1Rev">Class</li> +<li><a href="class-use/Registry.html">Use</a></li> +<li><a href="package-tree.html">Tree</a></li> +<li><a href="../../../../../deprecated-list.html">Deprecated</a></li> +<li><a href="../../../../../index-all.html">Index</a></li> +<li><a href="../../../../../help-doc.html">Help</a></li> +</ul> +</div> +<div class="subNav"> +<ul class="navList"> +<li><a href="../../../../../org/apache/hadoop/hbase/client/RegionServerCallable.html" title="class in org.apache.hadoop.hbase.client"><span class="strong">Prev Class</span></a></li> +<li><a href="../../../../../org/apache/hadoop/hbase/client/RegistryFactory.html" title="class in org.apache.hadoop.hbase.client"><span class="strong">Next Class</span></a></li> +</ul> +<ul class="navList"> +<li><a href="../../../../../index.html?org/apache/hadoop/hbase/client/Registry.html" target="_top">Frames</a></li> +<li><a href="Registry.html" target="_top">No Frames</a></li> +</ul> +<ul class="navList" id="allclasses_navbar_bottom"> +<li><a href="../../../../../allclasses-noframe.html">All Classes</a></li> +</ul> +<div> +<script type="text/javascript"><!-- + allClassesLink = document.getElementById("allclasses_navbar_bottom"); 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title="class or interface in java.lang">java.lang.Object</a></li> +<li> +<ul class="inheritance"> +<li>org.apache.hadoop.hbase.client.RegistryFactory</li> +</ul> +</li> +</ul> +<div class="description"> +<ul class="blockList"> +<li class="blockList"> +<hr> +<br> +<pre><a href="../../../../../org/apache/hadoop/hbase/classification/InterfaceAudience.Private.html" title="annotation in org.apache.hadoop.hbase.classification">@InterfaceAudience.Private</a> +final class <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegistryFactory.html#line.28">RegistryFactory</a> +extends <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true"; title="class or interface in java.lang">Object</a></pre> +<div class="block">Get instance of configured Registry.</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>Field Summary</h3> +<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> +<caption><span>Fields</span><span class="tabEnd"> </span></caption> +<tr> +<th class="colFirst" scope="col">Modifier and Type</th> +<th class="colLast" scope="col">Field and Description</th> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>(package private) static <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a></code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/RegistryFactory.html#REGISTRY_IMPL_CONF_KEY">REGISTRY_IMPL_CONF_KEY</a></strong></code> </td> +</tr> +</table> +</li> +</ul> +<!-- ======== CONSTRUCTOR SUMMARY ======== --> +<ul class="blockList"> +<li class="blockList"><a name="constructor_summary"> +<!-- --> +</a> +<h3>Constructor Summary</h3> +<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> +<caption><span>Constructors</span><span class="tabEnd"> </span></caption> +<tr> +<th class="colFirst" scope="col">Modifier</th> +<th class="colLast" scope="col">Constructor and Description</th> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>private </code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/RegistryFactory.html#RegistryFactory()">RegistryFactory</a></strong>()</code> </td> +</tr> +</table> +</li> +</ul> +<!-- ========== METHOD SUMMARY =========== --> +<ul class="blockList"> +<li class="blockList"><a name="method_summary"> +<!-- --> +</a> +<h3>Method Summary</h3> +<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> +<caption><span>Methods</span><span class="tabEnd"> </span></caption> +<tr> +<th class="colFirst" scope="col">Modifier and Type</th> +<th class="colLast" scope="col">Method and Description</th> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>(package private) static <a href="../../../../../org/apache/hadoop/hbase/client/Registry.html" title="interface in org.apache.hadoop.hbase.client">Registry</a></code></td> +<td class="colLast"><code><strong><a href="../../../../../org/apache/hadoop/hbase/client/RegistryFactory.html#getRegistry(org.apache.hadoop.hbase.client.Connection)">getRegistry</a></strong>(<a href="../../../../../org/apache/hadoop/hbase/client/Connection.html" title="interface in org.apache.hadoop.hbase.client">Connection</a> connection)</code> </td> +</tr> +</table> +<ul class="blockList"> +<li class="blockList"><a name="methods_inherited_from_class_java.lang.Object"> +<!-- --> +</a> +<h3>Methods inherited from class java.lang.<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true"; title="class or interface in java.lang">Object</a></h3> +<code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang /Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long,%20int)" title="class or interface in java.lang">wait</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>Field Detail</h3> +<a name="REGISTRY_IMPL_CONF_KEY"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>REGISTRY_IMPL_CONF_KEY</h4> +<pre>static final <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegistryFactory.html#line.29">REGISTRY_IMPL_CONF_KEY</a></pre> +<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../constant-values.html#org.apache.hadoop.hbase.client.RegistryFactory.REGISTRY_IMPL_CONF_KEY">Constant Field Values</a></dd></dl> +</li> +</ul> +</li> +</ul> +<!-- ========= CONSTRUCTOR DETAIL ======== --> +<ul class="blockList"> +<li class="blockList"><a name="constructor_detail"> +<!-- --> +</a> +<h3>Constructor Detail</h3> +<a name="RegistryFactory()"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>RegistryFactory</h4> +<pre>private <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegistryFactory.html#line.31">RegistryFactory</a>()</pre> +</li> +</ul> +</li> +</ul> +<!-- ============ METHOD DETAIL ========== --> +<ul class="blockList"> +<li class="blockList"><a name="method_detail"> +<!-- --> +</a> +<h3>Method Detail</h3> +<a name="getRegistry(org.apache.hadoop.hbase.client.Connection)"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>getRegistry</h4> +<pre>static <a href="../../../../../org/apache/hadoop/hbase/client/Registry.html" title="interface in org.apache.hadoop.hbase.client">Registry</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegistryFactory.html#line.37">getRegistry</a>(<a href="../../../../../org/apache/hadoop/hbase/client/Connection.html" title="interface in org.apache.hadoop.hbase.client">Connection</a> connection) + throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true"; title="class or interface in java.io">IOException</a></pre> +<dl><dt><span class="strong">Returns:</span></dt><dd>The cluster registry implementation to use.</dd> +<dt><span class="strong">Throws:</span></dt> +<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true"; title="class or interface in java.io">IOException</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><a href="#skip-navbar_bottom" title="Skip navigation links"></a><a name="navbar_bottom_firstrow"> +<!-- --> +</a> +<ul class="navList" title="Navigation"> +<li><a href="../../../../../overview-summary.html">Overview</a></li> +<li><a href="package-summary.html">Package</a></li> +<li class="navBarCell1Rev">Class</li> +<li><a href="class-use/RegistryFactory.html">Use</a></li> +<li><a href="package-tree.html">Tree</a></li> +<li><a href="../../../../../deprecated-list.html">Deprecated</a></li> +<li><a href="../../../../../index-all.html">Index</a></li> +<li><a href="../../../../../help-doc.html">Help</a></li> +</ul> +</div> +<div class="subNav"> +<ul class="navList"> +<li><a href="../../../../../org/apache/hadoop/hbase/client/Registry.html" title="interface in org.apache.hadoop.hbase.client"><span class="strong">Prev Class</span></a></li> +<li><a href="../../../../../org/apache/hadoop/hbase/client/Result.html" title="class in org.apache.hadoop.hbase.client"><span class="strong">Next Class</span></a></li> +</ul> +<ul class="navList"> +<li><a href="../../../../../index.html?org/apache/hadoop/hbase/client/RegistryFactory.html" target="_top">Frames</a></li> +<li><a href="RegistryFactory.html" target="_top">No Frames</a></li> +</ul> +<ul class="navList" id="allclasses_navbar_bottom"> +<li><a href="../../../../../allclasses-noframe.html">All Classes</a></li> +</ul> +<div> +<script type="text/javascript"><!-- + allClassesLink = document.getElementById("allclasses_navbar_bottom"); 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