| <!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>BucketEntry (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="BucketEntry (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}; |
| 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/BucketEntry.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/bucket/BucketCacheStats.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket"><span class="typeNameLink">Prev Class</span></a></li> |
| <li><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.BucketEntryHandler.html" title="interface in org.apache.hadoop.hbase.io.hfile.bucket"><span class="typeNameLink">Next Class</span></a></li> |
| </ul> |
| <ul class="navList"> |
| <li><a href="../../../../../../../index.html?org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html" target="_top">Frames</a></li> |
| <li><a href="BucketEntry.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><a href="#nested.class.summary">Nested</a> | </li> |
| <li><a href="#field.summary">Field</a> | </li> |
| <li><a href="#constructor.summary">Constr</a> | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li><a href="#field.detail">Field</a> | </li> |
| <li><a href="#constructor.detail">Constr</a> | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a name="skip.navbar.top"> |
| <!-- --> |
| </a></div> |
| <!-- ========= END OF TOP NAVBAR ========= --> |
| <!-- ======== START OF CLASS DATA ======== --> |
| <div class="header"> |
| <div class="subTitle">org.apache.hadoop.hbase.io.hfile.bucket</div> |
| <h2 title="Class BucketEntry" class="title">Class BucketEntry</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.bucket.BucketEntry</li> |
| </ul> |
| </li> |
| </ul> |
| <div class="description"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <dl> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../../../org/apache/hadoop/hbase/nio/HBaseReferenceCounted.html" title="interface in org.apache.hadoop.hbase.nio">HBaseReferenceCounted</a>, org.apache.hbase.thirdparty.io.netty.util.ReferenceCounted</dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>@InterfaceAudience.Private |
| class <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.48">BucketEntry</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/nio/HBaseReferenceCounted.html" title="interface in org.apache.hadoop.hbase.nio">HBaseReferenceCounted</a></pre> |
| <div class="block">Item in cache. We expect this to be where most memory goes. Java uses 8 bytes just for object |
| headers; after this, we want to use as little as possible - so we only use 8 bytes, but in order |
| to do so we end up messing around with all this Java casting stuff. Offset stored as 5 bytes that |
| make up the long. Doubt we'll see devices this big for ages. Offsets are divided by 256. So 5 |
| bytes gives us 256TB or so.</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"> </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>(package private) static interface </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.BucketEntryHandler.html" title="interface in org.apache.hadoop.hbase.io.hfile.bucket">BucketEntry.BucketEntryHandler</a><<a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.BucketEntryHandler.html" title="type parameter in BucketEntry.BucketEntryHandler">T</a>></span></code> </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"> </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>private long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#accessCounter">accessCounter</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>(package private) <a href="../../../../../../../org/apache/hadoop/hbase/io/ByteBuffAllocator.html" title="class in org.apache.hadoop.hbase.io">ByteBuffAllocator</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#allocator">allocator</a></span></code> </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/bucket/BucketEntry.html#cachedTime">cachedTime</a></span></code> |
| <div class="block">Time this block was cached.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>(package private) static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true" title="class or interface in java.util">Comparator</a><<a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">BucketEntry</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#COMPARATOR">COMPARATOR</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>(package private) byte</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#deserializerIndex">deserializerIndex</a></span></code> |
| <div class="block">The index of the deserializer that can deserialize this BucketEntry content.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#length">length</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>(package private) <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicBoolean.html?is-external=true" title="class or interface in java.util.concurrent.atomic">AtomicBoolean</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#markedAsEvicted">markedAsEvicted</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private byte</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#offset1">offset1</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#offsetBase">offsetBase</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/BlockPriority.html" title="enum in org.apache.hadoop.hbase.io.hfile">BlockPriority</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#priority">priority</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../../org/apache/hadoop/hbase/nio/RefCnt.html" title="class in org.apache.hadoop.hbase.nio">RefCnt</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#refCnt">refCnt</a></span></code> |
| <div class="block">The RefCnt means how many paths are referring the <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket"><code>BucketEntry</code></a>, each RPC reading path is |
| considering as one path, the <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.html#backingMap"><code>BucketCache.backingMap</code></a> reference is also considered a |
| path.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.summary"> |
| <!-- --> |
| </a> |
| <h3>Constructor Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#BucketEntry-long-int-long-boolean-">BucketEntry</a></span>(long offset, |
| int length, |
| long accessCounter, |
| boolean inMemory)</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#BucketEntry-long-int-long-boolean-org.apache.hadoop.hbase.nio.RefCnt-org.apache.hadoop.hbase.io.ByteBuffAllocator-">BucketEntry</a></span>(long offset, |
| int length, |
| long accessCounter, |
| boolean inMemory, |
| <a href="../../../../../../../org/apache/hadoop/hbase/nio/RefCnt.html" title="class in org.apache.hadoop.hbase.nio">RefCnt</a> refCnt, |
| <a href="../../../../../../../org/apache/hadoop/hbase/io/ByteBuffAllocator.html" title="class in org.apache.hadoop.hbase.io">ByteBuffAllocator</a> allocator)</code> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.summary"> |
| <!-- --> |
| </a> |
| <h3>Method Summary</h3> |
| <table class="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="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>(package private) void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#access-long-">access</a></span>(long accessCounter)</code> |
| <div class="block">Block has been accessed.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>(package private) <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/CacheableDeserializer.html" title="interface in org.apache.hadoop.hbase.io.hfile">CacheableDeserializer</a><<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/bucket/BucketEntry.html#deserializerReference--">deserializerReference</a></span>()</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>(package private) long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#getAccessCounter--">getAccessCounter</a></span>()</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>(package private) long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#getCachedTime--">getCachedTime</a></span>()</code> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#getLength--">getLength</a></span>()</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/BlockPriority.html" title="enum in org.apache.hadoop.hbase.io.hfile">BlockPriority</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#getPriority--">getPriority</a></span>()</code> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>(package private) boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#isRpcRef--">isRpcRef</a></span>()</code> |
| <div class="block">Check whether have some RPC patch referring this block.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>(package private) boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#markAsEvicted--">markAsEvicted</a></span>()</code> |
| <div class="block">The <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket"><code>BucketCache</code></a> will try to release its reference to this BucketEntry many times.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>(package private) boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#markStaleAsEvicted--">markStaleAsEvicted</a></span>()</code> |
| <div class="block">Mark as evicted only when NO RPC references.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>(package private) long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#offset--">offset</a></span>()</code> </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#refCnt--">refCnt</a></span>()</code> </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#release--">release</a></span>()</code> |
| <div class="block">We've three cases to release refCnt now: <br> |
| 1.</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">BucketEntry</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#retain--">retain</a></span>()</code> </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>(package private) void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#setDeserializerReference-org.apache.hadoop.hbase.io.hfile.CacheableDeserializer-">setDeserializerReference</a></span>(<a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/CacheableDeserializer.html" title="interface in org.apache.hadoop.hbase.io.hfile">CacheableDeserializer</a><<a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>> deserializer)</code> </td> |
| </tr> |
| <tr id="i14" 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/bucket/BucketEntry.html#setOffset-long-">setOffset</a></span>(long value)</code> </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>(package private) <T> T</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#withWriteLock-org.apache.hadoop.hbase.util.IdReadWriteLock-org.apache.hadoop.hbase.io.hfile.bucket.BucketEntry.BucketEntryHandler-">withWriteLock</a></span>(<a href="../../../../../../../org/apache/hadoop/hbase/util/IdReadWriteLock.html" title="class in org.apache.hadoop.hbase.util">IdReadWriteLock</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a>> offsetLock, |
| <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.BucketEntryHandler.html" title="interface in org.apache.hadoop.hbase.io.hfile.bucket">BucketEntry.BucketEntryHandler</a><T> handler)</code> </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code>(package 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/bucket/BucketEntry.html#wrapAsCacheable-org.apache.hadoop.hbase.nio.ByteBuff-">wrapAsCacheable</a></span>(<a href="../../../../../../../org/apache/hadoop/hbase/nio/ByteBuff.html" title="class in org.apache.hadoop.hbase.nio">ByteBuff</a> buf)</code> </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code>(package 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/bucket/BucketEntry.html#wrapAsCacheable-java.nio.ByteBuffer:A-">wrapAsCacheable</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a>[] buffers)</code> </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.<a href="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#toString--" title="class or interface in java.lang">toString</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.nio.HBaseReferenceCounted"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from interface org.apache.hadoop.hbase.nio.<a href="../../../../../../../org/apache/hadoop/hbase/nio/HBaseReferenceCounted.html" title="interface in org.apache.hadoop.hbase.nio">HBaseReferenceCounted</a></h3> |
| <code><a href="../../../../../../../org/apache/hadoop/hbase/nio/HBaseReferenceCounted.html#release-int-">release</a>, <a href="../../../../../../../org/apache/hadoop/hbase/nio/HBaseReferenceCounted.html#retain-int-">retain</a>, <a href="../../../../../../../org/apache/hadoop/hbase/nio/HBaseReferenceCounted.html#touch--">touch</a>, <a href="../../../../../../../org/apache/hadoop/hbase/nio/HBaseReferenceCounted.html#touch-java.lang.Object-">touch</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="COMPARATOR"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>COMPARATOR</h4> |
| <pre>static final <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true" title="class or interface in java.util">Comparator</a><<a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">BucketEntry</a>> <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.50">COMPARATOR</a></pre> |
| </li> |
| </ul> |
| <a name="offsetBase"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>offsetBase</h4> |
| <pre>private int <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.53">offsetBase</a></pre> |
| </li> |
| </ul> |
| <a name="length"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>length</h4> |
| <pre>private int <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.54">length</a></pre> |
| </li> |
| </ul> |
| <a name="offset1"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>offset1</h4> |
| <pre>private byte <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.55">offset1</a></pre> |
| </li> |
| </ul> |
| <a name="deserializerIndex"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>deserializerIndex</h4> |
| <pre>byte <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.61">deserializerIndex</a></pre> |
| <div class="block">The index of the deserializer that can deserialize this BucketEntry content. See |
| <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/CacheableDeserializerIdManager.html" title="class in org.apache.hadoop.hbase.io.hfile"><code>CacheableDeserializerIdManager</code></a> for hosting of index to serializers.</div> |
| </li> |
| </ul> |
| <a name="accessCounter"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>accessCounter</h4> |
| <pre>private volatile long <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.63">accessCounter</a></pre> |
| </li> |
| </ul> |
| <a name="priority"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>priority</h4> |
| <pre>private <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/BlockPriority.html" title="enum in org.apache.hadoop.hbase.io.hfile">BlockPriority</a> <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.64">priority</a></pre> |
| </li> |
| </ul> |
| <a name="refCnt"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>refCnt</h4> |
| <pre>private final <a href="../../../../../../../org/apache/hadoop/hbase/nio/RefCnt.html" title="class in org.apache.hadoop.hbase.nio">RefCnt</a> <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.81">refCnt</a></pre> |
| <div class="block">The RefCnt means how many paths are referring the <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket"><code>BucketEntry</code></a>, each RPC reading path is |
| considering as one path, the <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.html#backingMap"><code>BucketCache.backingMap</code></a> reference is also considered a |
| path. NOTICE that if two read RPC path hit the same <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket"><code>BucketEntry</code></a>, then the HFileBlocks |
| the two RPC referred will share the same refCnt instance with the BucketEntry. so the refCnt |
| will increase or decrease as the following: <br> |
| 1. when writerThread flush the block into IOEngine and add the bucketEntry into backingMap, the |
| refCnt ++; <br> |
| 2. If BucketCache evict the block and move the bucketEntry out of backingMap, the refCnt--; it |
| usually happen when HFile is closing or someone call the clearBucketCache by force. <br> |
| 3. The read RPC path start to refer the block which is backend by the memory area in |
| bucketEntry, then refCnt ++ ; <br> |
| 4. The read RPC patch shipped the response, and release the block. then refCnt--; <br> |
| Once the refCnt decrease to zero, then the <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket"><code>BucketAllocator</code></a> will free the block area.</div> |
| </li> |
| </ul> |
| <a name="markedAsEvicted"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>markedAsEvicted</h4> |
| <pre>final <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicBoolean.html?is-external=true" title="class or interface in java.util.concurrent.atomic">AtomicBoolean</a> <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.82">markedAsEvicted</a></pre> |
| </li> |
| </ul> |
| <a name="allocator"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>allocator</h4> |
| <pre>final <a href="../../../../../../../org/apache/hadoop/hbase/io/ByteBuffAllocator.html" title="class in org.apache.hadoop.hbase.io">ByteBuffAllocator</a> <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.83">allocator</a></pre> |
| </li> |
| </ul> |
| <a name="cachedTime"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>cachedTime</h4> |
| <pre>private final long <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.88">cachedTime</a></pre> |
| <div class="block">Time this block was cached. Presumes we are created just before we are added to the cache.</div> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.detail"> |
| <!-- --> |
| </a> |
| <h3>Constructor Detail</h3> |
| <a name="BucketEntry-long-int-long-boolean-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>BucketEntry</h4> |
| <pre><a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.90">BucketEntry</a>(long offset, |
| int length, |
| long accessCounter, |
| boolean inMemory)</pre> |
| </li> |
| </ul> |
| <a name="BucketEntry-long-int-long-boolean-org.apache.hadoop.hbase.nio.RefCnt-org.apache.hadoop.hbase.io.ByteBuffAllocator-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>BucketEntry</h4> |
| <pre><a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.94">BucketEntry</a>(long offset, |
| int length, |
| long accessCounter, |
| boolean inMemory, |
| <a href="../../../../../../../org/apache/hadoop/hbase/nio/RefCnt.html" title="class in org.apache.hadoop.hbase.nio">RefCnt</a> refCnt, |
| <a href="../../../../../../../org/apache/hadoop/hbase/io/ByteBuffAllocator.html" title="class in org.apache.hadoop.hbase.io">ByteBuffAllocator</a> allocator)</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a name="offset--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>offset</h4> |
| <pre>long <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.105">offset</a>()</pre> |
| </li> |
| </ul> |
| <a name="setOffset-long-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setOffset</h4> |
| <pre>private void <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.114">setOffset</a>(long value)</pre> |
| </li> |
| </ul> |
| <a name="getLength--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getLength</h4> |
| <pre>public int <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.121">getLength</a>()</pre> |
| </li> |
| </ul> |
| <a name="deserializerReference--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>deserializerReference</h4> |
| <pre><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/CacheableDeserializer.html" title="interface in org.apache.hadoop.hbase.io.hfile">CacheableDeserializer</a><<a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>> <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.125">deserializerReference</a>()</pre> |
| </li> |
| </ul> |
| <a name="setDeserializerReference-org.apache.hadoop.hbase.io.hfile.CacheableDeserializer-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setDeserializerReference</h4> |
| <pre>void <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.129">setDeserializerReference</a>(<a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/CacheableDeserializer.html" title="interface in org.apache.hadoop.hbase.io.hfile">CacheableDeserializer</a><<a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>> deserializer)</pre> |
| </li> |
| </ul> |
| <a name="getAccessCounter--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getAccessCounter</h4> |
| <pre>long <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.133">getAccessCounter</a>()</pre> |
| </li> |
| </ul> |
| <a name="access-long-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>access</h4> |
| <pre>void <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.140">access</a>(long accessCounter)</pre> |
| <div class="block">Block has been accessed. Update its local access counter.</div> |
| </li> |
| </ul> |
| <a name="getPriority--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getPriority</h4> |
| <pre>public <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/BlockPriority.html" title="enum in org.apache.hadoop.hbase.io.hfile">BlockPriority</a> <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.147">getPriority</a>()</pre> |
| </li> |
| </ul> |
| <a name="getCachedTime--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getCachedTime</h4> |
| <pre>long <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.151">getCachedTime</a>()</pre> |
| </li> |
| </ul> |
| <a name="markAsEvicted--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>markAsEvicted</h4> |
| <pre>boolean <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.161">markAsEvicted</a>()</pre> |
| <div class="block">The <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket"><code>BucketCache</code></a> will try to release its reference to this BucketEntry many times. we |
| must make sure the idempotent, otherwise it'll decrease the RPC's reference count in advance, |
| then for RPC memory leak happen.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if we deallocate this entry successfully.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="markStaleAsEvicted--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>markStaleAsEvicted</h4> |
| <pre>boolean <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.173">markStaleAsEvicted</a>()</pre> |
| <div class="block">Mark as evicted only when NO RPC references. Mainly used for eviction when cache size exceed |
| the max acceptable size.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if we deallocate this entry successfully.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="isRpcRef--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isRpcRef</h4> |
| <pre>boolean <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.191">isRpcRef</a>()</pre> |
| <div class="block">Check whether have some RPC patch referring this block. There're two case: <br> |
| 1. If current refCnt is greater than 1, there must be at least one referring RPC path; <br> |
| 2. If current refCnt is equal to 1 and the markedAtEvicted is true, the it means backingMap has |
| released its reference, the remaining reference can only be from RPC path. <br> |
| We use this check to decide whether we can free the block area: when cached size exceed the |
| acceptable size, our eviction policy will choose those stale blocks without any RPC reference |
| and the RPC referred block will be excluded.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true to indicate there're some RPC referring the block.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="wrapAsCacheable-java.nio.ByteBuffer:A-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>wrapAsCacheable</h4> |
| <pre><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a> <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.196">wrapAsCacheable</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a>[] buffers) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="wrapAsCacheable-org.apache.hadoop.hbase.nio.ByteBuff-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>wrapAsCacheable</h4> |
| <pre><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a> <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.200">wrapAsCacheable</a>(<a href="../../../../../../../org/apache/hadoop/hbase/nio/ByteBuff.html" title="class in org.apache.hadoop.hbase.nio">ByteBuff</a> buf) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="withWriteLock-org.apache.hadoop.hbase.util.IdReadWriteLock-org.apache.hadoop.hbase.io.hfile.bucket.BucketEntry.BucketEntryHandler-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>withWriteLock</h4> |
| <pre><T> T <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.208">withWriteLock</a>(<a href="../../../../../../../org/apache/hadoop/hbase/util/IdReadWriteLock.html" title="class in org.apache.hadoop.hbase.util">IdReadWriteLock</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a>> offsetLock, |
| <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.BucketEntryHandler.html" title="interface in org.apache.hadoop.hbase.io.hfile.bucket">BucketEntry.BucketEntryHandler</a><T> handler)</pre> |
| </li> |
| </ul> |
| <a name="refCnt--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>refCnt</h4> |
| <pre>public int <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.219">refCnt</a>()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>refCnt</code> in interface <code>org.apache.hbase.thirdparty.io.netty.util.ReferenceCounted</code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="retain--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>retain</h4> |
| <pre>public <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">BucketEntry</a> <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.224">retain</a>()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>retain</code> in interface <code>org.apache.hbase.thirdparty.io.netty.util.ReferenceCounted</code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="release--"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>release</h4> |
| <pre>public boolean <a href="../../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#line.242">release</a>()</pre> |
| <div class="block">We've three cases to release refCnt now: <br> |
| 1. BucketCache#evictBlock, it will release the backingMap's reference by force because we're |
| closing file or clear the bucket cache or some corruption happen. when all rpc references gone, |
| then free the area in bucketAllocator. <br> |
| 2. BucketCache#returnBlock . when rpc shipped, we'll release the block, only when backingMap |
| also release its refCnt (case.1 will do this) and no other rpc reference, then it will free the |
| area in bucketAllocator. <br> |
| 3.evict those block without any rpc reference if cache size exceeded. we'll only free those |
| blocks with zero rpc reference count, as the <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html#markStaleAsEvicted--"><code>markStaleAsEvicted()</code></a> do.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>release</code> in interface <code>org.apache.hbase.thirdparty.io.netty.util.ReferenceCounted</code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true to indicate we've decreased to zero and do the de-allocation.</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/BucketEntry.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/bucket/BucketCacheStats.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket"><span class="typeNameLink">Prev Class</span></a></li> |
| <li><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.BucketEntryHandler.html" title="interface in org.apache.hadoop.hbase.io.hfile.bucket"><span class="typeNameLink">Next Class</span></a></li> |
| </ul> |
| <ul class="navList"> |
| <li><a href="../../../../../../../index.html?org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html" target="_top">Frames</a></li> |
| <li><a href="BucketEntry.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><a href="#nested.class.summary">Nested</a> | </li> |
| <li><a href="#field.summary">Field</a> | </li> |
| <li><a href="#constructor.summary">Constr</a> | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li><a href="#field.detail">Field</a> | </li> |
| <li><a href="#constructor.detail">Constr</a> | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a name="skip.navbar.bottom"> |
| <!-- --> |
| </a></div> |
| <!-- ======== END OF BOTTOM NAVBAR ======= --> |
| <p class="legalCopy"><small>Copyright © 2007–2021 <a href="https://www.apache.org/">The Apache Software Foundation</a>. All rights reserved.</small></p> |
| </body> |
| </html> |
