Google Git
Sign in
apache / hbase-site / 03b765b44d7f220e28d9ea78367df882726f2ec9 / . / devapidocs / org / apache / hadoop / hbase / io / hfile / TinyLfuBlockCache.html
blob: 77f7c7a4378261df5bd6d6ad63eb459ebd9a3563 [file] [log] [blame]
<!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 -->
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>TinyLfuBlockCache (Apache HBase 3.0.0-alpha-2-SNAPSHOT API)</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="TinyLfuBlockCache (Apache HBase 3.0.0-alpha-2-SNAPSHOT API)";
}
}
catch(err) {
}
//-->
var methods = {"i0":10,"i1":10,"i2":10,"i3":10,"i4":10,"i5":10,"i6":10,"i7":10,"i8":10,"i9":10,"i10":10,"i11":10,"i12":10,"i13":10,"i14":10,"i15":10,"i16":10,"i17":10,"i18":10,"i19":10,"i20":10,"i21":10,"i22":10,"i23":10};
var tabs = {65535:["t0","All Methods"],2:["t2","Instance 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="class-use/TinyLfuBlockCache.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/io/hfile/SharedMemHFileBlock.html" title="class in org.apache.hadoop.hbase.io.hfile"><span class="typeNameLink">Prev&nbsp;Class</span></a></li>
<li><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.CachedBlockView.html" title="class in org.apache.hadoop.hbase.io.hfile"><span class="typeNameLink">Next&nbsp;Class</span></a></li>
</ul>
<ul class="navList">
<li><a href="../../../../../../index.html?org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html" target="_top">Frames</a></li>
<li><a href="TinyLfuBlockCache.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><a href="#nested.class.summary">Nested</a>&nbsp;|&nbsp;</li>
<li><a href="#field.summary">Field</a>&nbsp;|&nbsp;</li>
<li><a href="#constructor.summary">Constr</a>&nbsp;|&nbsp;</li>
<li><a href="#method.summary">Method</a></li>
</ul>
<ul class="subNavList">
<li>Detail:&nbsp;</li>
<li><a href="#field.detail">Field</a>&nbsp;|&nbsp;</li>
<li><a href="#constructor.detail">Constr</a>&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.hadoop.hbase.io.hfile</div>
<h2 title="Class TinyLfuBlockCache" class="title">Class TinyLfuBlockCache</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>org.apache.hadoop.hbase.io.hfile.TinyLfuBlockCache</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/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CachedBlock.html" title="interface in org.apache.hadoop.hbase.io.hfile">CachedBlock</a>&gt;, <a href="../../../../../../org/apache/hadoop/hbase/io/HeapSize.html" title="interface in org.apache.hadoop.hbase.io">HeapSize</a>, <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a>, <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/FirstLevelBlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">FirstLevelBlockCache</a>, <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/ResizableBlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">ResizableBlockCache</a></dd>
</dl>
<hr>
<br>
<pre>@InterfaceAudience.Private
public final class <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.57">TinyLfuBlockCache</a>
extends <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>
implements <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/FirstLevelBlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">FirstLevelBlockCache</a></pre>
<div class="block">A block cache that is memory-aware using <a href="../../../../../../org/apache/hadoop/hbase/io/HeapSize.html" title="interface in org.apache.hadoop.hbase.io"><code>HeapSize</code></a>, memory bounded using the W-TinyLFU
eviction algorithm, and concurrent. This implementation delegates to a Caffeine cache to provide
O(1) read and write operations.
<ul>
<li>W-TinyLFU: http://arxiv.org/pdf/1512.00727.pdf</li>
<li>Caffeine: https://github.com/ben-manes/caffeine</li>
<li>Cache design: http://highscalability.com/blog/2016/1/25/design-of-a-modern-cache.html</li>
</ul></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>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Nested Class Summary table, listing nested classes, and an explanation">
<caption><span>Nested Classes</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.CachedBlockView.html" title="class in org.apache.hadoop.hbase.io.hfile">TinyLfuBlockCache.CachedBlockView</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.EvictionListener.html" title="class in org.apache.hadoop.hbase.io.hfile">TinyLfuBlockCache.EvictionListener</a></span></code>
<div class="block">A removal listener to asynchronously record evictions and populate the victim cache.</div>
</td>
</tr>
</table>
</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">&nbsp;</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) com.github.benmanes.caffeine.cache.Cache&lt;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>,<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#cache">cache</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private static long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#DEFAULT_MAX_BLOCK_SIZE">DEFAULT_MAX_BLOCK_SIZE</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#LOG">LOG</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#MAX_BLOCK_SIZE">MAX_BLOCK_SIZE</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#maxBlockSize">maxBlockSize</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private com.github.benmanes.caffeine.cache.Policy.Eviction&lt;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>,<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#policy">policy</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#STAT_THREAD_PERIOD_SECONDS">STAT_THREAD_PERIOD_SECONDS</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CacheStats.html" title="class in org.apache.hadoop.hbase.io.hfile">CacheStats</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#stats">stats</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ScheduledExecutorService.html?is-external=true" title="class or interface in java.util.concurrent">ScheduledExecutorService</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#statsThreadPool">statsThreadPool</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#victimCache">victimCache</a></span></code>&nbsp;</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">&nbsp;</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/io/hfile/TinyLfuBlockCache.html#TinyLfuBlockCache-long-long-java.util.concurrent.Executor-org.apache.hadoop.conf.Configuration-">TinyLfuBlockCache</a></span>(long&nbsp;maximumSizeInBytes,
long&nbsp;avgBlockSize,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent">Executor</a>&nbsp;executor,
org.apache.hadoop.conf.Configuration&nbsp;conf)</code>
<div class="block">Creates a block cache.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#TinyLfuBlockCache-long-long-long-java.util.concurrent.Executor-">TinyLfuBlockCache</a></span>(long&nbsp;maximumSizeInBytes,
long&nbsp;avgBlockSize,
long&nbsp;maxBlockSize,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent">Executor</a>&nbsp;executor)</code>
<div class="block">Creates a block cache.</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="t2" class="tableTab"><span><a href="javascript:show(2);">Instance 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>private <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#asReferencedHeapBlock-org.apache.hadoop.hbase.io.hfile.Cacheable-">asReferencedHeapBlock</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&nbsp;buf)</code>
<div class="block">The block cached in TinyLfuBlockCache will always be an heap block: on the one side, the heap
access will be more faster then off-heap, the small index block or meta block cached in
CombinedBlockCache will benefit a lot.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#cacheBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-org.apache.hadoop.hbase.io.hfile.Cacheable-">cacheBlock</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;key,
<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&nbsp;value)</code>
<div class="block">Add block to cache (defaults to not in-memory).</div>
</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/io/hfile/TinyLfuBlockCache.html#cacheBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-org.apache.hadoop.hbase.io.hfile.Cacheable-boolean-">cacheBlock</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey,
<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&nbsp;value,
boolean&nbsp;inMemory)</code>
<div class="block">Add block to cache.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#containsBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-">containsBlock</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey)</code>
<div class="block">Whether the cache contains the block with specified cacheKey</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#evictBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-">evictBlock</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey)</code>
<div class="block">Evict block from cache.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#evictBlocksByHfileName-java.lang.String-">evictBlocksByHfileName</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;hfileName)</code>
<div class="block">Evicts all blocks for the given HFile.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#getBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-boolean-boolean-boolean-">getBlock</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey,
boolean&nbsp;caching,
boolean&nbsp;repeat,
boolean&nbsp;updateCacheMetrics)</code>
<div class="block">Fetch block from cache.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#getBlockCaches--">getBlockCaches</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#getBlockCount--">getBlockCount</a></span>()</code>
<div class="block">Returns the number of blocks currently cached in the block cache.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#getCurrentDataSize--">getCurrentDataSize</a></span>()</code>
<div class="block">Returns the occupied size of data blocks, in bytes.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#getCurrentSize--">getCurrentSize</a></span>()</code>
<div class="block">Returns the occupied size of the block cache, in bytes.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#getDataBlockCount--">getDataBlockCount</a></span>()</code>
<div class="block">Returns the number of data blocks currently cached in the block cache.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#getFreeSize--">getFreeSize</a></span>()</code>
<div class="block">Returns the free size of the block cache, in bytes.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#getMaxSize--">getMaxSize</a></span>()</code>
<div class="block">Returns the Max size of the block cache, in bytes.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CacheStats.html" title="class in org.apache.hadoop.hbase.io.hfile">CacheStats</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#getStats--">getStats</a></span>()</code>
<div class="block">Get the statistics for this block cache.</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#heapSize--">heapSize</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CachedBlock.html" title="interface in org.apache.hadoop.hbase.io.hfile">CachedBlock</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#iterator--">iterator</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>private void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#logStats--">logStats</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code>private void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#recordEviction--">recordEviction</a></span>()</code>
<div class="block">Records an eviction.</div>
</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#setMaxSize-long-">setMaxSize</a></span>(long&nbsp;size)</code>
<div class="block">Sets the max heap size that can be used by the BlockCache.</div>
</td>
</tr>
<tr id="i20" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#setVictimCache-org.apache.hadoop.hbase.io.hfile.BlockCache-">setVictimCache</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a>&nbsp;victimCache)</code>
<div class="block">Specifies the secondary cache.</div>
</td>
</tr>
<tr id="i21" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#shutdown--">shutdown</a></span>()</code>
<div class="block">Shutdown the cache.</div>
</td>
</tr>
<tr id="i22" class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#size--">size</a></span>()</code>
<div class="block">Returns the total size of the block cache, in bytes.</div>
</td>
</tr>
<tr id="i23" class="rowColor">
<td class="colFirst"><code><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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#toString--">toString</a></span>()</code>&nbsp;</td>
</tr>
</table>
<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#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.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/Object.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/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#hashCode--" title="class or interface in java.lang">hashCode</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>
<ul class="blockList">
<li class="blockList"><a name="methods.inherited.from.class.org.apache.hadoop.hbase.io.hfile.BlockCache">
<!-- -->
</a>
<h3>Methods inherited from interface&nbsp;org.apache.hadoop.hbase.io.hfile.<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></h3>
<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-boolean-boolean-boolean-org.apache.hadoop.hbase.io.hfile.BlockType-">getBlock</a></code></li>
</ul>
<ul class="blockList">
<li class="blockList"><a name="methods.inherited.from.class.java.lang.Iterable">
<!-- -->
</a>
<h3>Methods inherited from interface&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#forEach-java.util.function.Consumer-" title="class or interface in java.lang">forEach</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#spliterator--" title="class or interface in java.lang">spliterator</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="LOG">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>LOG</h4>
<pre>private static final&nbsp;org.slf4j.Logger <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.58">LOG</a></pre>
</li>
</ul>
<a name="MAX_BLOCK_SIZE">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>MAX_BLOCK_SIZE</h4>
<pre>private static final&nbsp;<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> <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.60">MAX_BLOCK_SIZE</a></pre>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../../constant-values.html#org.apache.hadoop.hbase.io.hfile.TinyLfuBlockCache.MAX_BLOCK_SIZE">Constant Field Values</a></dd>
</dl>
</li>
</ul>
<a name="DEFAULT_MAX_BLOCK_SIZE">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>DEFAULT_MAX_BLOCK_SIZE</h4>
<pre>private static final&nbsp;long <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.61">DEFAULT_MAX_BLOCK_SIZE</a></pre>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../../constant-values.html#org.apache.hadoop.hbase.io.hfile.TinyLfuBlockCache.DEFAULT_MAX_BLOCK_SIZE">Constant Field Values</a></dd>
</dl>
</li>
</ul>
<a name="STAT_THREAD_PERIOD_SECONDS">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>STAT_THREAD_PERIOD_SECONDS</h4>
<pre>private static final&nbsp;int <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.62">STAT_THREAD_PERIOD_SECONDS</a></pre>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../../constant-values.html#org.apache.hadoop.hbase.io.hfile.TinyLfuBlockCache.STAT_THREAD_PERIOD_SECONDS">Constant Field Values</a></dd>
</dl>
</li>
</ul>
<a name="policy">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>policy</h4>
<pre>private final transient&nbsp;com.github.benmanes.caffeine.cache.Policy.Eviction&lt;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>,<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&gt; <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.64">policy</a></pre>
</li>
</ul>
<a name="statsThreadPool">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>statsThreadPool</h4>
<pre>private final transient&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ScheduledExecutorService.html?is-external=true" title="class or interface in java.util.concurrent">ScheduledExecutorService</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.65">statsThreadPool</a></pre>
</li>
</ul>
<a name="maxBlockSize">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>maxBlockSize</h4>
<pre>private final&nbsp;long <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.66">maxBlockSize</a></pre>
</li>
</ul>
<a name="stats">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>stats</h4>
<pre>private final&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CacheStats.html" title="class in org.apache.hadoop.hbase.io.hfile">CacheStats</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.67">stats</a></pre>
</li>
</ul>
<a name="victimCache">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>victimCache</h4>
<pre>private transient&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.69">victimCache</a></pre>
</li>
</ul>
<a name="cache">
<!-- -->
</a>
<ul class="blockListLast">
<li class="blockList">
<h4>cache</h4>
<pre>final transient&nbsp;com.github.benmanes.caffeine.cache.Cache&lt;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>,<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&gt; <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.71">cache</a></pre>
</li>
</ul>
</li>
</ul>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<ul class="blockList">
<li class="blockList"><a name="constructor.detail">
<!-- -->
</a>
<h3>Constructor Detail</h3>
<a name="TinyLfuBlockCache-long-long-java.util.concurrent.Executor-org.apache.hadoop.conf.Configuration-">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>TinyLfuBlockCache</h4>
<pre>public&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.81">TinyLfuBlockCache</a>(long&nbsp;maximumSizeInBytes,
long&nbsp;avgBlockSize,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent">Executor</a>&nbsp;executor,
org.apache.hadoop.conf.Configuration&nbsp;conf)</pre>
<div class="block">Creates a block cache.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>maximumSizeInBytes</code> - maximum size of this cache, in bytes</dd>
<dd><code>avgBlockSize</code> - expected average size of blocks, in bytes</dd>
<dd><code>executor</code> - the cache's executor</dd>
<dd><code>conf</code> - additional configuration</dd>
</dl>
</li>
</ul>
<a name="TinyLfuBlockCache-long-long-long-java.util.concurrent.Executor-">
<!-- -->
</a>
<ul class="blockListLast">
<li class="blockList">
<h4>TinyLfuBlockCache</h4>
<pre>public&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.95">TinyLfuBlockCache</a>(long&nbsp;maximumSizeInBytes,
long&nbsp;avgBlockSize,
long&nbsp;maxBlockSize,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent">Executor</a>&nbsp;executor)</pre>
<div class="block">Creates a block cache.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>maximumSizeInBytes</code> - maximum size of this cache, in bytes</dd>
<dd><code>avgBlockSize</code> - expected average size of blocks, in bytes</dd>
<dd><code>maxBlockSize</code> - maximum size of a block, in bytes</dd>
<dd><code>executor</code> - the cache's executor</dd>
</dl>
</li>
</ul>
</li>
</ul>
<!-- ============ METHOD DETAIL ========== -->
<ul class="blockList">
<li class="blockList"><a name="method.detail">
<!-- -->
</a>
<h3>Method Detail</h3>
<a name="setVictimCache-org.apache.hadoop.hbase.io.hfile.BlockCache-">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>setVictimCache</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.116">setVictimCache</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a>&nbsp;victimCache)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/FirstLevelBlockCache.html#setVictimCache-org.apache.hadoop.hbase.io.hfile.BlockCache-">FirstLevelBlockCache</a></code></span></div>
<div class="block">Specifies the secondary cache. An entry that is evicted from this cache due to a size
constraint will be inserted into the victim cache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/FirstLevelBlockCache.html#setVictimCache-org.apache.hadoop.hbase.io.hfile.BlockCache-">setVictimCache</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/FirstLevelBlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">FirstLevelBlockCache</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>victimCache</code> - the second level cache</dd>
</dl>
</li>
</ul>
<a name="size--">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>size</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.124">size</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#size--">BlockCache</a></code></span></div>
<div class="block">Returns the total size of the block cache, in bytes.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#size--">size</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>size of cache, in bytes</dd>
</dl>
</li>
</ul>
<a name="getFreeSize--">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getFreeSize</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.129">getFreeSize</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getFreeSize--">BlockCache</a></code></span></div>
<div class="block">Returns the free size of the block cache, in bytes.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getFreeSize--">getFreeSize</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>free space in cache, in bytes</dd>
</dl>
</li>
</ul>
<a name="getCurrentSize--">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getCurrentSize</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.134">getCurrentSize</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getCurrentSize--">BlockCache</a></code></span></div>
<div class="block">Returns the occupied size of the block cache, in bytes.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getCurrentSize--">getCurrentSize</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>occupied space in cache, in bytes</dd>
</dl>
</li>
</ul>
<a name="getBlockCount--">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getBlockCount</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.139">getBlockCount</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getBlockCount--">BlockCache</a></code></span></div>
<div class="block">Returns the number of blocks currently cached in the block cache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getBlockCount--">getBlockCount</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>number of blocks in the cache</dd>
</dl>
</li>
</ul>
<a name="heapSize--">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>heapSize</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.144">heapSize</a>()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/HeapSize.html#heapSize--">heapSize</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/HeapSize.html" title="interface in org.apache.hadoop.hbase.io">HeapSize</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Approximate 'exclusive deep size' of implementing object. Includes
count of payload and hosting object sizings.</dd>
</dl>
</li>
</ul>
<a name="setMaxSize-long-">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>setMaxSize</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.149">setMaxSize</a>(long&nbsp;size)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/ResizableBlockCache.html#setMaxSize-long-">ResizableBlockCache</a></code></span></div>
<div class="block">Sets the max heap size that can be used by the BlockCache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/ResizableBlockCache.html#setMaxSize-long-">setMaxSize</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/ResizableBlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">ResizableBlockCache</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>size</code> - The max heap size.</dd>
</dl>
</li>
</ul>
<a name="containsBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>containsBlock</h4>
<pre>public&nbsp;boolean&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.154">containsBlock</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/FirstLevelBlockCache.html#containsBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-">FirstLevelBlockCache</a></code></span></div>
<div class="block">Whether the cache contains the block with specified cacheKey</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/FirstLevelBlockCache.html#containsBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-">containsBlock</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/FirstLevelBlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">FirstLevelBlockCache</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>cacheKey</code> - cache key for the block</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if it contains the block</dd>
</dl>
</li>
</ul>
<a name="getBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-boolean-boolean-boolean-">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getBlock</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.159">getBlock</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey,
boolean&nbsp;caching,
boolean&nbsp;repeat,
boolean&nbsp;updateCacheMetrics)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-boolean-boolean-boolean-">BlockCache</a></code></span></div>
<div class="block">Fetch block from cache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-boolean-boolean-boolean-">getBlock</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>cacheKey</code> - Block to fetch.</dd>
<dd><code>caching</code> - Whether this request has caching enabled (used for stats)</dd>
<dd><code>repeat</code> - Whether this is a repeat lookup for the same block
(used to avoid double counting cache misses when doing double-check locking)</dd>
<dd><code>updateCacheMetrics</code> - Whether to update cache metrics or not</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Block or null if block is not in 2 cache.</dd>
</dl>
</li>
</ul>
<a name="cacheBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-org.apache.hadoop.hbase.io.hfile.Cacheable-boolean-">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>cacheBlock</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.188">cacheBlock</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey,
<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&nbsp;value,
boolean&nbsp;inMemory)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#cacheBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-org.apache.hadoop.hbase.io.hfile.Cacheable-boolean-">BlockCache</a></code></span></div>
<div class="block">Add block to cache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#cacheBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-org.apache.hadoop.hbase.io.hfile.Cacheable-boolean-">cacheBlock</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>cacheKey</code> - The block's cache key.</dd>
<dd><code>value</code> - The block contents wrapped in a ByteBuffer.</dd>
<dd><code>inMemory</code> - Whether block should be treated as in-memory</dd>
</dl>
</li>
</ul>
<a name="cacheBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-org.apache.hadoop.hbase.io.hfile.Cacheable-">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>cacheBlock</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.193">cacheBlock</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;key,
<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&nbsp;value)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#cacheBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-org.apache.hadoop.hbase.io.hfile.Cacheable-">BlockCache</a></code></span></div>
<div class="block">Add block to cache (defaults to not in-memory).</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#cacheBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-org.apache.hadoop.hbase.io.hfile.Cacheable-">cacheBlock</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>key</code> - The block's cache key.</dd>
<dd><code>value</code> - The object to cache.</dd>
</dl>
</li>
</ul>
<a name="asReferencedHeapBlock-org.apache.hadoop.hbase.io.hfile.Cacheable-">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>asReferencedHeapBlock</h4>
<pre>private&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.223">asReferencedHeapBlock</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&nbsp;buf)</pre>
<div class="block">The block cached in TinyLfuBlockCache will always be an heap block: on the one side, the heap
access will be more faster then off-heap, the small index block or meta block cached in
CombinedBlockCache will benefit a lot. on other side, the TinyLfuBlockCache size is always
calculated based on the total heap size, if caching an off-heap block in TinyLfuBlockCache, the
heap size will be messed up. Here we will clone the block into an heap block if it's an
off-heap block, otherwise just use the original block. The key point is maintain the refCnt of
the block (HBASE-22127): <br>
1. if cache the cloned heap block, its refCnt is an totally new one, it's easy to handle; <br>
2. if cache the original heap block, we're sure that it won't be tracked in ByteBuffAllocator's
reservoir, if both RPC and TinyLfuBlockCache release the block, then it can be
garbage collected by JVM, so need a retain here.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>buf</code> - the original block</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>an block with an heap memory backend.</dd>
</dl>
</li>
</ul>
<a name="evictBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>evictBlock</h4>
<pre>public&nbsp;boolean&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.235">evictBlock</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#evictBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-">BlockCache</a></code></span></div>
<div class="block">Evict block from cache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#evictBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-">evictBlock</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>cacheKey</code> - Block to evict</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if block existed and was evicted, false if not</dd>
</dl>
</li>
</ul>
<a name="evictBlocksByHfileName-java.lang.String-">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>evictBlocksByHfileName</h4>
<pre>public&nbsp;int&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.244">evictBlocksByHfileName</a>(<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;hfileName)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#evictBlocksByHfileName-java.lang.String-">BlockCache</a></code></span></div>
<div class="block">Evicts all blocks for the given HFile.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#evictBlocksByHfileName-java.lang.String-">evictBlocksByHfileName</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the number of blocks evicted</dd>
</dl>
</li>
</ul>
<a name="getStats--">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getStats</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CacheStats.html" title="class in org.apache.hadoop.hbase.io.hfile">CacheStats</a>&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.258">getStats</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getStats--">BlockCache</a></code></span></div>
<div class="block">Get the statistics for this block cache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getStats--">getStats</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Stats</dd>
</dl>
</li>
</ul>
<a name="shutdown--">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>shutdown</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.263">shutdown</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#shutdown--">BlockCache</a></code></span></div>
<div class="block">Shutdown the cache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#shutdown--">shutdown</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
</dl>
</li>
</ul>
<a name="getBlockCaches--">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getBlockCaches</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a>[]&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.271">getBlockCaches</a>()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getBlockCaches--">getBlockCaches</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The list of sub blockcaches that make up this one; returns null if no sub caches.</dd>
</dl>
</li>
</ul>
<a name="iterator--">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>iterator</h4>
<pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CachedBlock.html" title="interface in org.apache.hadoop.hbase.io.hfile">CachedBlock</a>&gt;&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.276">iterator</a>()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#iterator--" title="class or interface in java.lang">iterator</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CachedBlock.html" title="interface in org.apache.hadoop.hbase.io.hfile">CachedBlock</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#iterator--">iterator</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Iterator over the blocks in the cache.</dd>
</dl>
</li>
</ul>
<a name="logStats--">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>logStats</h4>
<pre>private&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.283">logStats</a>()</pre>
</li>
</ul>
<a name="toString--">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>toString</h4>
<pre>public&nbsp;<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;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.302">toString</a>()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="https://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>&nbsp;in class&nbsp;<code><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></code></dd>
</dl>
</li>
</ul>
<a name="recordEviction--">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>recordEviction</h4>
<pre>private&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.343">recordEviction</a>()</pre>
<div class="block">Records an eviction. The number of eviction operations and evicted blocks are identical, as
an eviction is triggered immediately when the capacity has been exceeded. An eviction is
performed asynchronously. See the library's documentation for details on write buffers,
batching, and maintenance behavior.</div>
</li>
</ul>
<a name="getMaxSize--">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getMaxSize</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.425">getMaxSize</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getMaxSize--">BlockCache</a></code></span></div>
<div class="block">Returns the Max size of the block cache, in bytes.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getMaxSize--">getMaxSize</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>size of cache, in bytes</dd>
</dl>
</li>
</ul>
<a name="getCurrentDataSize--">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getCurrentDataSize</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.430">getCurrentDataSize</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getCurrentDataSize--">BlockCache</a></code></span></div>
<div class="block">Returns the occupied size of data blocks, in bytes.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getCurrentDataSize--">getCurrentDataSize</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>occupied space in cache, in bytes</dd>
</dl>
</li>
</ul>
<a name="getDataBlockCount--">
<!-- -->
</a>
<ul class="blockListLast">
<li class="blockList">
<h4>getDataBlockCount</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html#line.435">getDataBlockCount</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getDataBlockCount--">BlockCache</a></code></span></div>
<div class="block">Returns the number of data blocks currently cached in the block cache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getDataBlockCount--">getDataBlockCount</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>number of blocks in the cache</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/TinyLfuBlockCache.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/io/hfile/SharedMemHFileBlock.html" title="class in org.apache.hadoop.hbase.io.hfile"><span class="typeNameLink">Prev&nbsp;Class</span></a></li>
<li><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.CachedBlockView.html" title="class in org.apache.hadoop.hbase.io.hfile"><span class="typeNameLink">Next&nbsp;Class</span></a></li>
</ul>
<ul class="navList">
<li><a href="../../../../../../index.html?org/apache/hadoop/hbase/io/hfile/TinyLfuBlockCache.html" target="_top">Frames</a></li>
<li><a href="TinyLfuBlockCache.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><a href="#nested.class.summary">Nested</a>&nbsp;|&nbsp;</li>
<li><a href="#field.summary">Field</a>&nbsp;|&nbsp;</li>
<li><a href="#constructor.summary">Constr</a>&nbsp;|&nbsp;</li>
<li><a href="#method.summary">Method</a></li>
</ul>
<ul class="subNavList">
<li>Detail:&nbsp;</li>
<li><a href="#field.detail">Field</a>&nbsp;|&nbsp;</li>
<li><a href="#constructor.detail">Constr</a>&nbsp;|&nbsp;</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 &#169; 2007&#x2013;2021 <a href="https://www.apache.org/">The Apache Software Foundation</a>. All rights reserved.</small></p>
</body>
</html>