releases/1.12.0/apidocs/org/apache/kudu/client/AsyncKuduScanner.ReadMode.html - kudu-site - Git at Google

 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 <!-- NewPage -->
 <html lang="en">
 <head>
 <!-- Generated by javadoc -->
 <title>AsyncKuduScanner.ReadMode</title>
 <link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="Style">
 <script type="text/javascript" src="../../../../script.js"></script>
 </head>
 <body>
 <script type="text/javascript"><!--
     try {
         if (location.href.indexOf('is-external=true') == -1) {
             parent.document.title="AsyncKuduScanner.ReadMode";
         }
     }
     catch(err) {
     }
 //-->
 var methods = {"i0":9,"i1":9};
 var tabs = {65535:["t0","All Methods"],1:["t1","Static Methods"],8:["t4","Concrete Methods"]};
 var altColor = "altColor";
 var rowColor = "rowColor";
 var tableTab = "tableTab";
 var activeTableTab = "activeTableTab";
 </script>
 <noscript>
 <div>JavaScript is disabled on your browser.</div>
 </noscript>
 <!-- ========= START OF TOP NAVBAR ======= -->
 <div class="topNav"><a name="navbar.top">
 <!--   -->
 </a>
 <div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div>
 <a name="navbar.top.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="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/kudu/client/AsyncKuduScanner.AsyncKuduScannerBuilder.html" title="class in org.apache.kudu.client"><span class="typeNameLink">Prev&nbsp;Class</span></a></li>
 <li><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html" title="class in org.apache.kudu.client"><span class="typeNameLink">Next&nbsp;Class</span></a></li>
 </ul>
 <ul class="navList">
 <li><a href="../../../../index.html?org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" target="_top">Frames</a></li>
 <li><a href="AsyncKuduScanner.ReadMode.html" target="_top">No&nbsp;Frames</a></li>
 </ul>
 <ul class="navList" id="allclasses_navbar_top">
 <li><a href="../../../../allclasses-noframe.html">All&nbsp;Classes</a></li>
 </ul>
 <div>
 <script type="text/javascript"><!--
   allClassesLink = document.getElementById("allclasses_navbar_top");
   if(window==top) {
     allClassesLink.style.display = "block";
   }
   else {
     allClassesLink.style.display = "none";
   }
   //-->
 </script>
 </div>
 <div>
 <ul class="subNavList">
 <li>Summary:&nbsp;</li>
 <li>Nested&nbsp;|&nbsp;</li>
 <li><a href="#enum.constant.summary">Enum Constants</a>&nbsp;|&nbsp;</li>
 <li>Field&nbsp;|&nbsp;</li>
 <li><a href="#method.summary">Method</a></li>
 </ul>
 <ul class="subNavList">
 <li>Detail:&nbsp;</li>
 <li><a href="#enum.constant.detail">Enum Constants</a>&nbsp;|&nbsp;</li>
 <li>Field&nbsp;|&nbsp;</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.kudu.client</div>
 <h2 title="Enum AsyncKuduScanner.ReadMode" class="title">Enum AsyncKuduScanner.ReadMode</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="class or interface in java.lang">java.lang.Object</a></li>
 <li>
 <ul class="inheritance">
 <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang">java.lang.Enum</a>&lt;<a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a>&gt;</li>
 <li>
 <ul class="inheritance">
 <li>org.apache.kudu.client.AsyncKuduScanner.ReadMode</li>
 </ul>
 </li>
 </ul>
 </li>
 </ul>
 <div class="description">
 <ul class="blockList">
 <li class="blockList">
 <dl>
 <dt>All Implemented Interfaces:</dt>
 <dd><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</a>&lt;<a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a>&gt;</dd>
 </dl>
 <dl>
 <dt>Enclosing class:</dt>
 <dd><a href="../../../../org/apache/kudu/client/AsyncKuduScanner.html" title="class in org.apache.kudu.client">AsyncKuduScanner</a></dd>
 </dl>
 <hr>
 <br>
 <pre>@InterfaceAudience.Public
  @InterfaceStability.Evolving
 public static enum <span class="typeNameLabel">AsyncKuduScanner.ReadMode</span>
 extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang">Enum</a>&lt;<a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a>&gt;</pre>
 <div class="block">The possible read modes for scanners.</div>
 </li>
 </ul>
 </div>
 <div class="summary">
 <ul class="blockList">
 <li class="blockList">
 <!-- =========== ENUM CONSTANT SUMMARY =========== -->
 <ul class="blockList">
 <li class="blockList"><a name="enum.constant.summary">
 <!--   -->
 </a>
 <h3>Enum Constant Summary</h3>
 <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Enum Constant Summary table, listing enum constants, and an explanation">
 <caption><span>Enum Constants</span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colOne" scope="col">Enum Constant and Description</th>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html#READ_AT_SNAPSHOT">READ_AT_SNAPSHOT</a></span></code>
 <div class="block">When READ_AT_SNAPSHOT is specified the server will attempt to perform a read
  at the provided timestamp.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html#READ_LATEST">READ_LATEST</a></span></code>
 <div class="block">When READ_LATEST is specified the server will always return committed writes at
  the time the request was received.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html#READ_YOUR_WRITES">READ_YOUR_WRITES</a></span></code>
 <div class="block">When @c READ_YOUR_WRITES is specified, the client will perform a read
  such that it follows all previously known writes and reads from this client.</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">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</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>static <a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html#valueOf-java.lang.String-">valueOf</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;name)</code>
 <div class="block">Returns the enum constant of this type with the specified name.</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code>static <a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a>[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html#values--">values</a></span>()</code>
 <div class="block">Returns an array containing the constants of this enum type, in
 the order they are declared.</div>
 </td>
 </tr>
 </table>
 <ul class="blockList">
 <li class="blockList"><a name="methods.inherited.from.class.java.lang.Enum">
 <!--   -->
 </a>
 <h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang">Enum</a></h3>
 <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#compareTo-E-" title="class or interface in java.lang">compareTo</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#getDeclaringClass--" title="class or interface in java.lang">getDeclaringClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#name--" title="class or interface in java.lang">name</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#ordinal--" title="class or interface in java.lang">ordinal</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#valueOf-java.lang.Class-java.lang.String-" title="class or interface in java.lang">valueOf</a></code></li>
 </ul>
 <ul class="blockList">
 <li class="blockList"><a name="methods.inherited.from.class.java.lang.Object">
 <!--   -->
 </a>
 <h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
 <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" 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">
 <!-- ============ ENUM CONSTANT DETAIL =========== -->
 <ul class="blockList">
 <li class="blockList"><a name="enum.constant.detail">
 <!--   -->
 </a>
 <h3>Enum Constant Detail</h3>
 <a name="READ_LATEST">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>READ_LATEST</h4>
 <pre>public static final&nbsp;<a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a> READ_LATEST</pre>
 <div class="block">When READ_LATEST is specified the server will always return committed writes at
  the time the request was received. This type of read does not return a snapshot
  timestamp and is not repeatable.

  In ACID terms this corresponds to Isolation mode: "Read Committed"

  This is the default mode.</div>
 </li>
 </ul>
 <a name="READ_AT_SNAPSHOT">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>READ_AT_SNAPSHOT</h4>
 <pre>public static final&nbsp;<a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a> READ_AT_SNAPSHOT</pre>
 <div class="block">When READ_AT_SNAPSHOT is specified the server will attempt to perform a read
  at the provided timestamp. If no timestamp is provided the server will take the
  current time as the snapshot timestamp. In this mode reads are repeatable, i.e.
  all future reads at the same timestamp will yield the same data. This is
  performed at the expense of waiting for in-flight transactions whose timestamp
  is lower than the snapshot's timestamp to complete, so it might incur a latency
  penalty.

  In ACID terms this, by itself, corresponds to Isolation mode "Repeatable
  Read". If all writes to the scanned tablet are made externally consistent,
  then this corresponds to Isolation mode "Strict-Serializable".

  Note: there currently "holes", which happen in rare edge conditions, by which writes
  are sometimes not externally consistent even when action was taken to make them so.
  In these cases Isolation may degenerate to mode "Read Committed". See KUDU-430.</div>
 </li>
 </ul>
 <a name="READ_YOUR_WRITES">
 <!--   -->
 </a>
 <ul class="blockListLast">
 <li class="blockList">
 <h4>READ_YOUR_WRITES</h4>
 <pre>public static final&nbsp;<a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a> READ_YOUR_WRITES</pre>
 <div class="block">When @c READ_YOUR_WRITES is specified, the client will perform a read
  such that it follows all previously known writes and reads from this client.
  Specifically this mode:
   (1) ensures read-your-writes and read-your-reads session guarantees,
   (2) minimizes latency caused by waiting for outstanding write
       transactions to complete.

  Reads in this mode are not repeatable: two READ_YOUR_WRITES reads, even if
  they provide the same propagated timestamp bound, can execute at different
  timestamps and thus may return different results.</div>
 </li>
 </ul>
 </li>
 </ul>
 <!-- ============ METHOD DETAIL ========== -->
 <ul class="blockList">
 <li class="blockList"><a name="method.detail">
 <!--   -->
 </a>
 <h3>Method Detail</h3>
 <a name="values--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>values</h4>
 <pre>public static&nbsp;<a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a>[]&nbsp;values()</pre>
 <div class="block">Returns an array containing the constants of this enum type, in
 the order they are declared.  This method may be used to iterate
 over the constants as follows:
 <pre>
 for (AsyncKuduScanner.ReadMode c : AsyncKuduScanner.ReadMode.values())
 &nbsp;   System.out.println(c);
 </pre></div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>an array containing the constants of this enum type, in the order they are declared</dd>
 </dl>
 </li>
 </ul>
 <a name="valueOf-java.lang.String-">
 <!--   -->
 </a>
 <ul class="blockListLast">
 <li class="blockList">
 <h4>valueOf</h4>
 <pre>public static&nbsp;<a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a>&nbsp;valueOf(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;name)</pre>
 <div class="block">Returns the enum constant of this type with the specified name.
 The string must match <i>exactly</i> an identifier used to declare an
 enum constant in this type.  (Extraneous whitespace characters are
 not permitted.)</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>name</code> - the name of the enum constant to be returned.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the enum constant with the specified name</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if this enum type has no constant with the specified name</dd>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang">NullPointerException</a></code> - if the argument is null</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="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/kudu/client/AsyncKuduScanner.AsyncKuduScannerBuilder.html" title="class in org.apache.kudu.client"><span class="typeNameLink">Prev&nbsp;Class</span></a></li>
 <li><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html" title="class in org.apache.kudu.client"><span class="typeNameLink">Next&nbsp;Class</span></a></li>
 </ul>
 <ul class="navList">
 <li><a href="../../../../index.html?org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" target="_top">Frames</a></li>
 <li><a href="AsyncKuduScanner.ReadMode.html" target="_top">No&nbsp;Frames</a></li>
 </ul>
 <ul class="navList" id="allclasses_navbar_bottom">
 <li><a href="../../../../allclasses-noframe.html">All&nbsp;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:&nbsp;</li>
 <li>Nested&nbsp;|&nbsp;</li>
 <li><a href="#enum.constant.summary">Enum Constants</a>&nbsp;|&nbsp;</li>
 <li>Field&nbsp;|&nbsp;</li>
 <li><a href="#method.summary">Method</a></li>
 </ul>
 <ul class="subNavList">
 <li>Detail:&nbsp;</li>
 <li><a href="#enum.constant.detail">Enum Constants</a>&nbsp;|&nbsp;</li>
 <li>Field&nbsp;|&nbsp;</li>
 <li><a href="#method.detail">Method</a></li>
 </ul>
 </div>
 <a name="skip.navbar.bottom">
 <!--   -->
 </a></div>
 <!-- ======== END OF BOTTOM NAVBAR ======= -->
 </body>
 </html>
	<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
	<!-- NewPage -->
	<html lang="en">
	<head>
	<!-- Generated by javadoc -->
	<title>AsyncKuduScanner.ReadMode</title>
	<link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="Style">
	<script type="text/javascript" src="../../../../script.js"></script>
	</head>
	<body>
	<script type="text/javascript"><!--
	try {
	if (location.href.indexOf('is-external=true') == -1) {
	parent.document.title="AsyncKuduScanner.ReadMode";
	}
	}
	catch(err) {
	}
	//-->
	var methods = {"i0":9,"i1":9};
	var tabs = {65535:["t0","All Methods"],1:["t1","Static Methods"],8:["t4","Concrete Methods"]};
	var altColor = "altColor";
	var rowColor = "rowColor";
	var tableTab = "tableTab";
	var activeTableTab = "activeTableTab";
	</script>
	<noscript>
	<div>JavaScript is disabled on your browser.</div>
	</noscript>
	<!-- ========= START OF TOP NAVBAR ======= -->
	<div class="topNav"><a name="navbar.top">
	<!-- -->
	</a>
	<div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div>
	<a name="navbar.top.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="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/kudu/client/AsyncKuduScanner.AsyncKuduScannerBuilder.html" title="class in org.apache.kudu.client"><span class="typeNameLink">Prev Class</span></a></li>
	<li><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html" title="class in org.apache.kudu.client"><span class="typeNameLink">Next Class</span></a></li>
	</ul>
	<ul class="navList">
	<li><a href="../../../../index.html?org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" target="_top">Frames</a></li>
	<li><a href="AsyncKuduScanner.ReadMode.html" target="_top">No Frames</a></li>
	</ul>
	<ul class="navList" id="allclasses_navbar_top">
	<li><a href="../../../../allclasses-noframe.html">All Classes</a></li>
	</ul>
	<div>
	<script type="text/javascript"><!--
	allClassesLink = document.getElementById("allclasses_navbar_top");
	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="#enum.constant.summary">Enum Constants</a> \| </li>
	<li>Field \| </li>
	<li><a href="#method.summary">Method</a></li>
	</ul>
	<ul class="subNavList">
	<li>Detail: </li>
	<li><a href="#enum.constant.detail">Enum Constants</a> \| </li>
	<li>Field \| </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.kudu.client</div>
	<h2 title="Enum AsyncKuduScanner.ReadMode" class="title">Enum AsyncKuduScanner.ReadMode</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="class or interface in java.lang">java.lang.Object</a></li>
	<li>
	<ul class="inheritance">
	<li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang">java.lang.Enum</a><<a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a>></li>
	<li>
	<ul class="inheritance">
	<li>org.apache.kudu.client.AsyncKuduScanner.ReadMode</li>
	</ul>
	</li>
	</ul>
	</li>
	</ul>
	<div class="description">
	<ul class="blockList">
	<li class="blockList">
	<dl>
	<dt>All Implemented Interfaces:</dt>
	<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</a><<a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a>></dd>
	</dl>
	<dl>
	<dt>Enclosing class:</dt>
	<dd><a href="../../../../org/apache/kudu/client/AsyncKuduScanner.html" title="class in org.apache.kudu.client">AsyncKuduScanner</a></dd>
	</dl>
	<hr>
	<br>
	<pre>@InterfaceAudience.Public
	@InterfaceStability.Evolving
	public static enum <span class="typeNameLabel">AsyncKuduScanner.ReadMode</span>
	extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang">Enum</a><<a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a>></pre>
	<div class="block">The possible read modes for scanners.</div>
	</li>
	</ul>
	</div>
	<div class="summary">
	<ul class="blockList">
	<li class="blockList">
	<!-- =========== ENUM CONSTANT SUMMARY =========== -->
	<ul class="blockList">
	<li class="blockList"><a name="enum.constant.summary">
	<!-- -->
	</a>
	<h3>Enum Constant Summary</h3>
	<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Enum Constant Summary table, listing enum constants, and an explanation">
	<caption><span>Enum Constants</span><span class="tabEnd"> </span></caption>
	<tr>
	<th class="colOne" scope="col">Enum Constant and Description</th>
	</tr>
	<tr class="altColor">
	<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html#READ_AT_SNAPSHOT">READ_AT_SNAPSHOT</a></span></code>
	<div class="block">When READ_AT_SNAPSHOT is specified the server will attempt to perform a read
	at the provided timestamp.</div>
	</td>
	</tr>
	<tr class="rowColor">
	<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html#READ_LATEST">READ_LATEST</a></span></code>
	<div class="block">When READ_LATEST is specified the server will always return committed writes at
	the time the request was received.</div>
	</td>
	</tr>
	<tr class="altColor">
	<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html#READ_YOUR_WRITES">READ_YOUR_WRITES</a></span></code>
	<div class="block">When @c READ_YOUR_WRITES is specified, the client will perform a read
	such that it follows all previously known writes and reads from this client.</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="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>static <a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a></code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html#valueOf-java.lang.String-">valueOf</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> name)</code>
	<div class="block">Returns the enum constant of this type with the specified name.</div>
	</td>
	</tr>
	<tr id="i1" class="rowColor">
	<td class="colFirst"><code>static <a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a>[]</code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html#values--">values</a></span>()</code>
	<div class="block">Returns an array containing the constants of this enum type, in
	the order they are declared.</div>
	</td>
	</tr>
	</table>
	<ul class="blockList">
	<li class="blockList"><a name="methods.inherited.from.class.java.lang.Enum">
	<!-- -->
	</a>
	<h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang">Enum</a></h3>
	<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#compareTo-E-" title="class or interface in java.lang">compareTo</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#getDeclaringClass--" title="class or interface in java.lang">getDeclaringClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#name--" title="class or interface in java.lang">name</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#ordinal--" title="class or interface in java.lang">ordinal</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#valueOf-java.lang.Class-java.lang.String-" title="class or interface in java.lang">valueOf</a></code></li>
	</ul>
	<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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
	<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" 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">
	<!-- ============ ENUM CONSTANT DETAIL =========== -->
	<ul class="blockList">
	<li class="blockList"><a name="enum.constant.detail">
	<!-- -->
	</a>
	<h3>Enum Constant Detail</h3>
	<a name="READ_LATEST">
	<!-- -->
	</a>
	<ul class="blockList">
	<li class="blockList">
	<h4>READ_LATEST</h4>
	<pre>public static final <a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a> READ_LATEST</pre>
	<div class="block">When READ_LATEST is specified the server will always return committed writes at
	the time the request was received. This type of read does not return a snapshot
	timestamp and is not repeatable.

	In ACID terms this corresponds to Isolation mode: "Read Committed"

	This is the default mode.</div>
	</li>
	</ul>
	<a name="READ_AT_SNAPSHOT">
	<!-- -->
	</a>
	<ul class="blockList">
	<li class="blockList">
	<h4>READ_AT_SNAPSHOT</h4>
	<pre>public static final <a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a> READ_AT_SNAPSHOT</pre>
	<div class="block">When READ_AT_SNAPSHOT is specified the server will attempt to perform a read
	at the provided timestamp. If no timestamp is provided the server will take the
	current time as the snapshot timestamp. In this mode reads are repeatable, i.e.
	all future reads at the same timestamp will yield the same data. This is
	performed at the expense of waiting for in-flight transactions whose timestamp
	is lower than the snapshot's timestamp to complete, so it might incur a latency
	penalty.

	In ACID terms this, by itself, corresponds to Isolation mode "Repeatable
	Read". If all writes to the scanned tablet are made externally consistent,
	then this corresponds to Isolation mode "Strict-Serializable".

	Note: there currently "holes", which happen in rare edge conditions, by which writes
	are sometimes not externally consistent even when action was taken to make them so.
	In these cases Isolation may degenerate to mode "Read Committed". See KUDU-430.</div>
	</li>
	</ul>
	<a name="READ_YOUR_WRITES">
	<!-- -->
	</a>
	<ul class="blockListLast">
	<li class="blockList">
	<h4>READ_YOUR_WRITES</h4>
	<pre>public static final <a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a> READ_YOUR_WRITES</pre>
	<div class="block">When @c READ_YOUR_WRITES is specified, the client will perform a read
	such that it follows all previously known writes and reads from this client.
	Specifically this mode:
	(1) ensures read-your-writes and read-your-reads session guarantees,
	(2) minimizes latency caused by waiting for outstanding write
	transactions to complete.

	Reads in this mode are not repeatable: two READ_YOUR_WRITES reads, even if
	they provide the same propagated timestamp bound, can execute at different
	timestamps and thus may return different results.</div>
	</li>
	</ul>
	</li>
	</ul>
	<!-- ============ METHOD DETAIL ========== -->
	<ul class="blockList">
	<li class="blockList"><a name="method.detail">
	<!-- -->
	</a>
	<h3>Method Detail</h3>
	<a name="values--">
	<!-- -->
	</a>
	<ul class="blockList">
	<li class="blockList">
	<h4>values</h4>
	<pre>public static <a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a>[] values()</pre>
	<div class="block">Returns an array containing the constants of this enum type, in
	the order they are declared. This method may be used to iterate
	over the constants as follows:
	<pre>
	for (AsyncKuduScanner.ReadMode c : AsyncKuduScanner.ReadMode.values())
	System.out.println(c);
	</pre></div>
	<dl>
	<dt><span class="returnLabel">Returns:</span></dt>
	<dd>an array containing the constants of this enum type, in the order they are declared</dd>
	</dl>
	</li>
	</ul>
	<a name="valueOf-java.lang.String-">
	<!-- -->
	</a>
	<ul class="blockListLast">
	<li class="blockList">
	<h4>valueOf</h4>
	<pre>public static <a href="../../../../org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" title="enum in org.apache.kudu.client">AsyncKuduScanner.ReadMode</a> valueOf(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> name)</pre>
	<div class="block">Returns the enum constant of this type with the specified name.
	The string must match <i>exactly</i> an identifier used to declare an
	enum constant in this type. (Extraneous whitespace characters are
	not permitted.)</div>
	<dl>
	<dt><span class="paramLabel">Parameters:</span></dt>
	<dd><code>name</code> - the name of the enum constant to be returned.</dd>
	<dt><span class="returnLabel">Returns:</span></dt>
	<dd>the enum constant with the specified name</dd>
	<dt><span class="throwsLabel">Throws:</span></dt>
	<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if this enum type has no constant with the specified name</dd>
	<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang">NullPointerException</a></code> - if the argument is null</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="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/kudu/client/AsyncKuduScanner.AsyncKuduScannerBuilder.html" title="class in org.apache.kudu.client"><span class="typeNameLink">Prev Class</span></a></li>
	<li><a href="../../../../org/apache/kudu/client/AsyncKuduSession.html" title="class in org.apache.kudu.client"><span class="typeNameLink">Next Class</span></a></li>
	</ul>
	<ul class="navList">
	<li><a href="../../../../index.html?org/apache/kudu/client/AsyncKuduScanner.ReadMode.html" target="_top">Frames</a></li>
	<li><a href="AsyncKuduScanner.ReadMode.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="#enum.constant.summary">Enum Constants</a> \| </li>
	<li>Field \| </li>
	<li><a href="#method.summary">Method</a></li>
	</ul>
	<ul class="subNavList">
	<li>Detail: </li>
	<li><a href="#enum.constant.detail">Enum Constants</a> \| </li>
	<li>Field \| </li>
	<li><a href="#method.detail">Method</a></li>
	</ul>
	</div>
	<a name="skip.navbar.bottom">
	<!-- -->
	</a></div>
	<!-- ======== END OF BOTTOM NAVBAR ======= -->
	</body>
	</html>