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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><a href="#field.summary">Field</a> | </li> +<li><a href="#constructor.summary">Constr</a> | </li> +<li><a href="#method.summary">Method</a></li> +</ul> +<ul class="subNavList"> +<li>Detail: </li> +<li><a href="#field.detail">Field</a> | </li> +<li><a href="#constructor.detail">Constr</a> | </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.zookeeper</div> +<h2 title="Class ZKWatcher" class="title">Class ZKWatcher</h2> +</div> +<div class="contentContainer"> +<ul class="inheritance"> +<li><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true"; title="class or interface in java.lang">java.lang.Object</a></li> +<li> +<ul class="inheritance"> +<li>org.apache.hadoop.hbase.zookeeper.ZKWatcher</li> +</ul> +</li> +</ul> +<div class="description"> +<ul class="blockList"> +<li class="blockList"> +<dl> +<dt>All Implemented Interfaces:</dt> +<dd><a href="http://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true"; title="class or interface in java.io">Closeable</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true"; title="class or interface in java.lang">AutoCloseable</a>, <a href="../../../../../org/apache/hadoop/hbase/Abortable.html" title="interface in org.apache.hadoop.hbase">Abortable</a>, org.apache.zookeeper.Watcher</dd> +</dl> +<hr> +<br> +<pre>@InterfaceAudience.Private +public class <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.60">ZKWatcher</a> +extends <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true"; title="class or interface in java.lang">Object</a> +implements org.apache.zookeeper.Watcher, <a href="../../../../../org/apache/hadoop/hbase/Abortable.html" title="interface in org.apache.hadoop.hbase">Abortable</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true"; title="class or interface in java.io">Closeable</a></pre> +<div class="block">Acts as the single ZooKeeper Watcher. One instance of this is instantiated + for each Master, RegionServer, and client process. + + <p>This is the only class that implements <code>Watcher</code>. Other internal + classes which need to be notified of ZooKeeper events must register with + the local instance of this watcher via <a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#registerListener-org.apache.hadoop.hbase.zookeeper.ZKListener-"><code>registerListener(org.apache.hadoop.hbase.zookeeper.ZKListener)</code></a>. + + <p>This class also holds and manages the connection to ZooKeeper. Code to + deal with connection related events and exceptions are handled here.</div> +</li> +</ul> +</div> +<div class="summary"> +<ul class="blockList"> +<li class="blockList"> +<!-- ======== NESTED CLASS SUMMARY ======== --> +<ul class="blockList"> +<li class="blockList"><a name="nested.class.summary"> +<!-- --> +</a> +<h3>Nested Class Summary</h3> +<ul class="blockList"> +<li class="blockList"><a name="nested.classes.inherited.from.class.org.apache.zookeeper.Watcher"> +<!-- --> +</a> +<h3>Nested classes/interfaces inherited from interface org.apache.zookeeper.Watcher</h3> +<code>org.apache.zookeeper.Watcher.Event</code></li> +</ul> +</li> +</ul> +<!-- =========== FIELD SUMMARY =========== --> +<ul class="blockList"> +<li class="blockList"><a name="field.summary"> +<!-- --> +</a> +<h3>Field Summary</h3> +<table class="memberSummary" 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 <a href="../../../../../org/apache/hadoop/hbase/Abortable.html" title="interface in org.apache.hadoop.hbase">Abortable</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#abortable">abortable</a></span></code> </td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>private boolean</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#aborted">aborted</a></span></code> </td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>private org.apache.hadoop.conf.Configuration</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#conf">conf</a></span></code> </td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>private <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#identifier">identifier</a></span></code> </td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>private <a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true"; title="class or interface in java.util">List</a><<a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKListener.html" title="class in org.apache.hadoop.hbase.zookeeper">ZKListener</a>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#listeners">listeners</a></span></code> </td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>private static org.apache.commons.logging.Log</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#LOG">LOG</a></span></code> </td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>private static <a href="http://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html?is-external=true"; title="class or interface in java.util.regex">Pattern</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#NAME_PATTERN">NAME_PATTERN</a></span></code> </td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>private <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#prefix">prefix</a></span></code> </td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>private <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#quorum">quorum</a></span></code> </td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/zookeeper/RecoverableZooKeeper.html" title="class in org.apache.hadoop.hbase.zookeeper">RecoverableZooKeeper</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#recoverableZooKeeper">recoverableZooKeeper</a></span></code> </td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code><a href="http://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CountDownLatch.html?is-external=true"; title="class or interface in java.util.concurrent">CountDownLatch</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#saslLatch">saslLatch</a></span></code> </td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZNodePaths.html" title="class in org.apache.hadoop.hbase.zookeeper">ZNodePaths</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#znodePaths">znodePaths</a></span></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="memberSummary" 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><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#ZKWatcher-org.apache.hadoop.conf.Configuration-java.lang.String-org.apache.hadoop.hbase.Abortable-">ZKWatcher</a></span>(org.apache.hadoop.conf.Configuration conf, + <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a> identifier, + <a href="../../../../../org/apache/hadoop/hbase/Abortable.html" title="interface in org.apache.hadoop.hbase">Abortable</a> abortable)</code> +<div class="block">Instantiate a ZooKeeper connection and watcher.</div> +</td> +</tr> +<tr class="rowColor"> +<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#ZKWatcher-org.apache.hadoop.conf.Configuration-java.lang.String-org.apache.hadoop.hbase.Abortable-boolean-">ZKWatcher</a></span>(org.apache.hadoop.conf.Configuration conf, + <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a> identifier, + <a href="../../../../../org/apache/hadoop/hbase/Abortable.html" title="interface in org.apache.hadoop.hbase">Abortable</a> abortable, + boolean canCreateBaseZNode)</code> +<div class="block">Instantiate a ZooKeeper connection and watcher.</div> +</td> +</tr> +</table> +</li> +</ul> +<!-- ========== METHOD SUMMARY =========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.summary"> +<!-- --> +</a> +<h3>Method Summary</h3> +<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> +<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> +<tr> +<th class="colFirst" scope="col">Modifier and Type</th> +<th class="colLast" scope="col">Method and Description</th> +</tr> +<tr id="i0" class="altColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#abort-java.lang.String-java.lang.Throwable-">abort</a></span>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a> why, + <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true"; title="class or interface in java.lang">Throwable</a> e)</code> +<div class="block">Abort the server or client.</div> +</td> +</tr> +<tr id="i1" class="rowColor"> +<td class="colFirst"><code>private boolean</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#checkACLForSuperUsers-java.lang.String:A-java.util.List-">checkACLForSuperUsers</a></span>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a>[] superUsers, + <a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true"; title="class or interface in java.util">List</a><org.apache.zookeeper.data.ACL> acls)</code> </td> +</tr> +<tr id="i2" class="altColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#checkAndSetZNodeAcls--">checkAndSetZNodeAcls</a></span>()</code> +<div class="block">On master start, we check the znode ACLs under the root directory and set the ACLs properly + if needed.</div> +</td> +</tr> +<tr id="i3" class="rowColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#close--">close</a></span>()</code> +<div class="block">Close the connection to ZooKeeper.</div> +</td> +</tr> +<tr id="i4" class="altColor"> +<td class="colFirst"><code>private void</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#connectionEvent-org.apache.zookeeper.WatchedEvent-">connectionEvent</a></span>(org.apache.zookeeper.WatchedEvent event)</code> +<div class="block">Called when there is a connection-related event via the Watcher callback.</div> +</td> +</tr> +<tr id="i5" class="rowColor"> +<td class="colFirst"><code>private void</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#createBaseZNodes--">createBaseZNodes</a></span>()</code> </td> +</tr> +<tr id="i6" 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/zookeeper/ZKWatcher.html#getConfiguration--">getConfiguration</a></span>()</code> </td> +</tr> +<tr id="i7" class="rowColor"> +<td class="colFirst"><code><a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true"; title="class or interface in java.util">List</a><<a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKListener.html" title="class in org.apache.hadoop.hbase.zookeeper">ZKListener</a>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#getListeners--">getListeners</a></span>()</code> +<div class="block">Get a copy of current registered listeners</div> +</td> +</tr> +<tr id="i8" class="altColor"> +<td class="colFirst"><code><a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true"; title="class or interface in java.util">List</a><<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#getMetaReplicaNodes--">getMetaReplicaNodes</a></span>()</code> +<div class="block">Get the znodes corresponding to the meta replicas from ZK</div> +</td> +</tr> +<tr id="i9" class="rowColor"> +<td class="colFirst"><code>int</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#getNumberOfListeners--">getNumberOfListeners</a></span>()</code> </td> +</tr> +<tr id="i10" class="altColor"> +<td class="colFirst"><code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#getQuorum--">getQuorum</a></span>()</code> +<div class="block">Get the quorum address of this instance.</div> +</td> +</tr> +<tr id="i11" class="rowColor"> +<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/zookeeper/RecoverableZooKeeper.html" title="class in org.apache.hadoop.hbase.zookeeper">RecoverableZooKeeper</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#getRecoverableZooKeeper--">getRecoverableZooKeeper</a></span>()</code> +<div class="block">Get the connection to ZooKeeper.</div> +</td> +</tr> +<tr id="i12" class="altColor"> +<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZNodePaths.html" title="class in org.apache.hadoop.hbase.zookeeper">ZNodePaths</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#getZNodePaths--">getZNodePaths</a></span>()</code> +<div class="block">Get the znodePaths.</div> +</td> +</tr> +<tr id="i13" class="rowColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#interruptedException-java.lang.InterruptedException-">interruptedException</a></span>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true"; title="class or interface in java.lang">InterruptedException</a> ie)</code> +<div class="block">Handles InterruptedExceptions in client calls.</div> +</td> +</tr> +<tr id="i14" class="altColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#interruptedExceptionNoThrow-java.lang.InterruptedException-boolean-">interruptedExceptionNoThrow</a></span>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true"; title="class or interface in java.lang">InterruptedException</a> ie, + boolean throwLater)</code> +<div class="block">Log the InterruptedException and interrupt current thread</div> +</td> +</tr> +<tr id="i15" class="rowColor"> +<td class="colFirst"><code>boolean</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#isAborted--">isAborted</a></span>()</code> +<div class="block">Check if the server or client was aborted.</div> +</td> +</tr> +<tr id="i16" class="altColor"> +<td class="colFirst"><code>private boolean</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#isBaseZnodeAclSetup-java.util.List-">isBaseZnodeAclSetup</a></span>(<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true"; title="class or interface in java.util">List</a><org.apache.zookeeper.data.ACL> acls)</code> +<div class="block">Checks whether the ACLs returned from the base znode (/hbase) is set for secure setup.</div> +</td> +</tr> +<tr id="i17" class="rowColor"> +<td class="colFirst"><code>boolean</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#isClientReadable-java.lang.String-">isClientReadable</a></span>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a> node)</code> +<div class="block">Returns whether the znode is supposed to be readable by the client + and DOES NOT contain sensitive information (world readable).</div> +</td> +</tr> +<tr id="i18" class="altColor"> +<td class="colFirst"><code>static boolean</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#isSuperUserId-java.lang.String:A-org.apache.zookeeper.data.Id-">isSuperUserId</a></span>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; 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title="class or interface in java.io">IOException</a></pre> +<div class="block">Instantiate a ZooKeeper connection and watcher.</div> +<dl> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>identifier</code> - string that is passed to RecoverableZookeeper to be used as + identifier for this instance. 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This will do post-order recursion, so that baseZnode ACLs + will be set last in case the master fails in between.</div> +<dl> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>znode</code> - </dd> +<dt><span class="throwsLabel">Throws:</span></dt> +<dd><code>org.apache.zookeeper.KeeperException</code></dd> +<dd><code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true"; title="class or interface in java.lang">InterruptedException</a></code></dd> +</dl> +</li> +</ul> +<a name="isBaseZnodeAclSetup-java.util.List-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>isBaseZnodeAclSetup</h4> +<pre>private boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.233">isBaseZnodeAclSetup</a>(<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true"; title="class or interface in java.util">List</a><org.apache.zookeeper.data.ACL> acls) + throws <a href="http://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true"; title="class or interface in java.io">IOException</a></pre> +<div class="block">Checks whether the ACLs returned from the base znode (/hbase) is set for secure setup.</div> +<dl> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>acls</code> - acls from zookeeper</dd> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>whether ACLs are set for the base znode</dd> +<dt><span class="throwsLabel">Throws:</span></dt> +<dd><code><a href="http://docs.oracle.com/javase/8/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="checkACLForSuperUsers-java.lang.String:A-java.util.List-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>checkACLForSuperUsers</h4> +<pre>private boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.309">checkACLForSuperUsers</a>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a>[] superUsers, + <a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true"; title="class or interface in java.util">List</a><org.apache.zookeeper.data.ACL> acls)</pre> +</li> +</ul> +<a name="isSuperUserId-java.lang.String:A-org.apache.zookeeper.data.Id-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>isSuperUserId</h4> +<pre>public static boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.339">isSuperUserId</a>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a>[] superUsers, + org.apache.zookeeper.data.Id id)</pre> +</li> +</ul> +<a name="toString--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>toString</h4> +<pre>public <a href="http://docs.oracle.com/javase/8/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/zookeeper/ZKWatcher.html#line.350">toString</a>()</pre> +<dl> +<dt><span class="overrideSpecifyLabel">Overrides:</span></dt> +<dd><code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--"; title="class or interface in java.lang">toString</a></code> in class <code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true"; title="class or interface in java.lang">Object</a></code></dd> +</dl> +</li> +</ul> +<a name="prefix-java.lang.String-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>prefix</h4> +<pre>public <a href="http://docs.oracle.com/javase/8/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/zookeeper/ZKWatcher.html#line.360">prefix</a>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a> str)</pre> +<div class="block">Adds this instance's identifier as a prefix to the passed <code>str</code></div> +<dl> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>str</code> - String to amend.</dd> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>A new string with this instance's identifier as prefix: e.g. + if passed 'hello world', the returned string could be</dd> +</dl> +</li> +</ul> +<a name="getMetaReplicaNodes--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>getMetaReplicaNodes</h4> +<pre>public <a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true"; title="class or interface in java.util">List</a><<a href="http://docs.oracle.com/javase/8/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/zookeeper/ZKWatcher.html#line.369">getMetaReplicaNodes</a>() + throws org.apache.zookeeper.KeeperException</pre> +<div class="block">Get the znodes corresponding to the meta replicas from ZK</div> +<dl> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>list of znodes</dd> +<dt><span class="throwsLabel">Throws:</span></dt> +<dd><code>org.apache.zookeeper.KeeperException</code></dd> +</dl> +</li> +</ul> +<a name="registerListener-org.apache.hadoop.hbase.zookeeper.ZKListener-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>registerListener</h4> +<pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.385">registerListener</a>(<a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKListener.html" title="class in org.apache.hadoop.hbase.zookeeper">ZKListener</a> listener)</pre> +<div class="block">Register the specified listener to receive ZooKeeper events.</div> +<dl> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>listener</code> - </dd> +</dl> +</li> +</ul> +<a name="registerListenerFirst-org.apache.hadoop.hbase.zookeeper.ZKListener-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>registerListenerFirst</h4> +<pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.394">registerListenerFirst</a>(<a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKListener.html" title="class in org.apache.hadoop.hbase.zookeeper">ZKListener</a> listener)</pre> +<div class="block">Register the specified listener to receive ZooKeeper events and add it as + the first in the list of current listeners.</div> +<dl> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>listener</code> - </dd> +</dl> +</li> +</ul> +<a name="unregisterListener-org.apache.hadoop.hbase.zookeeper.ZKListener-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>unregisterListener</h4> +<pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.398">unregisterListener</a>(<a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKListener.html" title="class in org.apache.hadoop.hbase.zookeeper">ZKListener</a> listener)</pre> +</li> +</ul> +<a name="unregisterAllListeners--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>unregisterAllListeners</h4> +<pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.405">unregisterAllListeners</a>()</pre> +<div class="block">Clean all existing listeners</div> +</li> +</ul> +<a name="getListeners--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>getListeners</h4> +<pre>public <a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true"; title="class or interface in java.util">List</a><<a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKListener.html" title="class in org.apache.hadoop.hbase.zookeeper">ZKListener</a>> <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.412">getListeners</a>()</pre> +<div class="block">Get a copy of current registered listeners</div> +</li> +</ul> +<a name="getNumberOfListeners--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>getNumberOfListeners</h4> +<pre>public int <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.419">getNumberOfListeners</a>()</pre> +<dl> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>The number of currently registered listeners</dd> +</dl> +</li> +</ul> +<a name="getRecoverableZooKeeper--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>getRecoverableZooKeeper</h4> +<pre>public <a href="../../../../../org/apache/hadoop/hbase/zookeeper/RecoverableZooKeeper.html" title="class in org.apache.hadoop.hbase.zookeeper">RecoverableZooKeeper</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.427">getRecoverableZooKeeper</a>()</pre> +<div class="block">Get the connection to ZooKeeper.</div> +<dl> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>connection reference to zookeeper</dd> +</dl> +</li> +</ul> +<a name="reconnectAfterExpiration--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>reconnectAfterExpiration</h4> +<pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.431">reconnectAfterExpiration</a>() + throws <a href="http://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true"; title="class or interface in java.io">IOException</a>, + org.apache.zookeeper.KeeperException, + <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true"; title="class or interface in java.lang">InterruptedException</a></pre> +<dl> +<dt><span class="throwsLabel">Throws:</span></dt> +<dd><code><a href="http://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true"; title="class or interface in java.io">IOException</a></code></dd> +<dd><code>org.apache.zookeeper.KeeperException</code></dd> +<dd><code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true"; title="class or interface in java.lang">InterruptedException</a></code></dd> +</dl> +</li> +</ul> +<a name="getQuorum--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>getQuorum</h4> +<pre>public <a href="http://docs.oracle.com/javase/8/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/zookeeper/ZKWatcher.html#line.439">getQuorum</a>()</pre> +<div class="block">Get the quorum address of this instance.</div> +<dl> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>quorum string of this zookeeper connection instance</dd> +</dl> +</li> +</ul> +<a name="getZNodePaths--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>getZNodePaths</h4> +<pre>public <a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZNodePaths.html" title="class in org.apache.hadoop.hbase.zookeeper">ZNodePaths</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.448">getZNodePaths</a>()</pre> +<div class="block">Get the znodePaths. + <p> + Mainly used for mocking as mockito can not mock a field access.</div> +</li> +</ul> +<a name="process-org.apache.zookeeper.WatchedEvent-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>process</h4> +<pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.459">process</a>(org.apache.zookeeper.WatchedEvent event)</pre> +<div class="block">Method called from ZooKeeper for events and connection status. + <p> + Valid events are passed along to listeners. Connection status changes + are dealt with locally.</div> +<dl> +<dt><span class="overrideSpecifyLabel">Specified by:</span></dt> +<dd><code>process</code> in interface <code>org.apache.zookeeper.Watcher</code></dd> +</dl> +</li> +</ul> +<a name="connectionEvent-org.apache.zookeeper.WatchedEvent-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>connectionEvent</h4> +<pre>private void <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.517">connectionEvent</a>(org.apache.zookeeper.WatchedEvent event)</pre> +<div class="block">Called when there is a connection-related event via the Watcher callback. + <p> + If Disconnected or Expired, this should shutdown the cluster. But, since + we send a KeeperException.SessionExpiredException along with the abort + call, it's possible for the Abortable to catch it and try to create a new + session with ZooKeeper. This is what the client does in HCM. + <p></div> +<dl> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>event</code> - </dd> +</dl> +</li> +</ul> +<a name="sync-java.lang.String-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>sync</h4> +<pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.563">sync</a>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a> path) + throws org.apache.zookeeper.KeeperException</pre> +<div class="block">Forces a synchronization of this ZooKeeper client connection. + <p> + Executing this method before running other methods will ensure that the + subsequent operations are up-to-date and consistent as of the time that + the sync is complete. + <p> + This is used for compareAndSwap type operations where we need to read the + data of an existing node and delete or transition that node, utilizing the + previously read version and data. We want to ensure that the version read + is up-to-date from when we begin the operation.</div> +<dl> +<dt><span class="throwsLabel">Throws:</span></dt> +<dd><code>org.apache.zookeeper.KeeperException</code></dd> +</dl> +</li> +</ul> +<a name="keeperException-org.apache.zookeeper.KeeperException-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>keeperException</h4> +<pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.577">keeperException</a>(org.apache.zookeeper.KeeperException ke) + throws org.apache.zookeeper.KeeperException</pre> +<div class="block">Handles KeeperExceptions in client calls. + <p> + This may be temporary but for now this gives one place to deal with these. + <p> + TODO: Currently this method rethrows the exception to let the caller handle + <p></div> +<dl> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>ke</code> - </dd> +<dt><span class="throwsLabel">Throws:</span></dt> +<dd><code>org.apache.zookeeper.KeeperException</code></dd> +</dl> +</li> +</ul> +<a name="interruptedException-java.lang.InterruptedException-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>interruptedException</h4> +<pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.588">interruptedException</a>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true"; title="class or interface in java.lang">InterruptedException</a> ie) + throws org.apache.zookeeper.KeeperException</pre> +<div class="block">Handles InterruptedExceptions in client calls.</div> +<dl> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>ie</code> - the InterruptedException instance thrown</dd> +<dt><span class="throwsLabel">Throws:</span></dt> +<dd><code>org.apache.zookeeper.KeeperException</code> - the exception to throw, transformed from the InterruptedException</dd> +</dl> +</li> +</ul> +<a name="interruptedExceptionNoThrow-java.lang.InterruptedException-boolean-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>interruptedExceptionNoThrow</h4> +<pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.599">interruptedExceptionNoThrow</a>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true"; title="class or interface in java.lang">InterruptedException</a> ie, + boolean throwLater)</pre> +<div class="block">Log the InterruptedException and interrupt current thread</div> +<dl> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>ie</code> - The IterruptedException to log</dd> +<dd><code>throwLater</code> - Whether we will throw the exception latter</dd> +</dl> +</li> +</ul> +<a name="close--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>close</h4> +<pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.612">close</a>()</pre> +<div class="block">Close the connection to ZooKeeper.</div> +<dl> +<dt><span class="overrideSpecifyLabel">Specified by:</span></dt> +<dd><code><a href="http://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true#close--"; title="class or interface in java.io">close</a></code> in interface <code><a href="http://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true"; title="class or interface in java.io">Closeable</a></code></dd> +<dt><span class="overrideSpecifyLabel">Specified by:</span></dt> +<dd><code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true#close--"; title="class or interface in java.lang">close</a></code> in interface <code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true"; title="class or interface in java.lang">AutoCloseable</a></code></dd> +</dl> +</li> +</ul> +<a name="getConfiguration--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>getConfiguration</h4> +<pre>public org.apache.hadoop.conf.Configuration <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.620">getConfiguration</a>()</pre> +</li> +</ul> +<a name="abort-java.lang.String-java.lang.Throwable-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>abort</h4> +<pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.625">abort</a>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true"; title="class or interface in java.lang">String</a> why, + <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true"; title="class or interface in java.lang">Throwable</a> e)</pre> +<div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../org/apache/hadoop/hbase/Abortable.html#abort-java.lang.String-java.lang.Throwable-">Abortable</a></code></span></div> +<div class="block">Abort the server or client.</div> +<dl> +<dt><span class="overrideSpecifyLabel">Specified by:</span></dt> +<dd><code><a href="../../../../../org/apache/hadoop/hbase/Abortable.html#abort-java.lang.String-java.lang.Throwable-">abort</a></code> in interface <code><a href="../../../../../org/apache/hadoop/hbase/Abortable.html" title="interface in org.apache.hadoop.hbase">Abortable</a></code></dd> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>why</code> - Why we're aborting.</dd> +<dd><code>e</code> - Throwable that caused abort. Can be null.</dd> +</dl> +</li> +</ul> +<a name="isAborted--"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>isAborted</h4> +<pre>public boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/zookeeper/ZKWatcher.html#line.631">isAborted</a>()</pre> +<div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../org/apache/hadoop/hbase/Abortable.html#isAborted--">Abortable</a></code></span></div> +<div class="block">Check if the server or client was aborted.</div> +<dl> +<dt><span class="overrideSpecifyLabel">Specified by:</span></dt> +<dd><code><a href="../../../../../org/apache/hadoop/hbase/Abortable.html#isAborted--">isAborted</a></code> in interface <code><a href="../../../../../org/apache/hadoop/hbase/Abortable.html" title="interface in org.apache.hadoop.hbase">Abortable</a></code></dd> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>true if the server or client was aborted, false otherwise</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="Skip navigation links">Skip navigation links</a></div> +<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/ZKWatcher.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/zookeeper/ZKUtil.ZKUtilOp.SetData.html" title="class in org.apache.hadoop.hbase.zookeeper"><span class="typeNameLink">Prev Class</span></a></li> +<li><a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZNodePaths.html" title="class in org.apache.hadoop.hbase.zookeeper"><span class="typeNameLink">Next Class</span></a></li> +</ul> +<ul class="navList"> +<li><a href="../../../../../index.html?org/apache/hadoop/hbase/zookeeper/ZKWatcher.html" target="_top">Frames</a></li> +<li><a href="ZKWatcher.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"); + 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><a href="#field.summary">Field</a> | </li> +<li><a href="#constructor.summary">Constr</a> | </li> +<li><a href="#method.summary">Method</a></li> +</ul> +<ul class="subNavList"> +<li>Detail: </li> +<li><a href="#field.detail">Field</a> | </li> +<li><a href="#constructor.detail">Constr</a> | </li> +<li><a href="#method.detail">Method</a></li> +</ul> +</div> +<a name="skip.navbar.bottom"> +<!-- --> +</a></div> +<!-- ======== END OF BOTTOM NAVBAR ======= --> +<p class="legalCopy"><small>Copyright © 2007–2017 <a href="https://www.apache.org/";>The Apache Software Foundation</a>. 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