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| <h2 title="Class BloomFilterChunk" class="title">Class BloomFilterChunk</h2> |
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| <ul class="inheritance"> |
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| <li>org.apache.hadoop.hbase.util.BloomFilterChunk</li> |
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| <div class="description"> |
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| <dt>All Implemented Interfaces:</dt> |
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| </dl> |
| <hr> |
| <br> |
| <pre>@InterfaceAudience.Private |
| public class <a href="../../../../../src-html/org/apache/hadoop/hbase/util/BloomFilterChunk.html#line.35">BloomFilterChunk</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/util/BloomFilterBase.html" title="interface in org.apache.hadoop.hbase.util">BloomFilterBase</a></pre> |
| <div class="block">The basic building block for the <a href="../../../../../org/apache/hadoop/hbase/io/hfile/CompoundBloomFilter.html" title="class in org.apache.hadoop.hbase.io.hfile"><code>CompoundBloomFilter</code></a></div> |
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| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#bloom">bloom</a></span></code> |
| <div class="block">Bloom bits</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/hbase/regionserver/BloomType.html" title="enum in org.apache.hadoop.hbase.regionserver">BloomType</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#bloomType">bloomType</a></span></code> |
| <div class="block">The type of bloom</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#byteSize">byteSize</a></span></code> |
| <div class="block">Bytes (B) in the array.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/hbase/util/Hash.html" title="class in org.apache.hadoop.hbase.util">Hash</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#hash">hash</a></span></code> |
| <div class="block">Hash Function</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#hashCount">hashCount</a></span></code> |
| <div class="block">Number of hash functions</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#hashType">hashType</a></span></code> |
| <div class="block">Hash type</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#keyCount">keyCount</a></span></code> |
| <div class="block">Keys currently in the bloom</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#maxKeys">maxKeys</a></span></code> |
| <div class="block">Max Keys expected for the bloom</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
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| <h3>Constructor Summary</h3> |
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| <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/util/BloomFilterChunk.html#BloomFilterChunk-java.io.DataInput-">BloomFilterChunk</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a> meta)</code> |
| <div class="block">Loads bloom filter meta data from file input.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#BloomFilterChunk-int-org.apache.hadoop.hbase.regionserver.BloomType-">BloomFilterChunk</a></span>(int hashType, |
| <a href="../../../../../org/apache/hadoop/hbase/regionserver/BloomType.html" title="enum in org.apache.hadoop.hbase.regionserver">BloomType</a> bloomType)</code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#BloomFilterChunk-int-double-int-int-">BloomFilterChunk</a></span>(int maxKeys, |
| double errorRate, |
| int hashType, |
| int foldFactor)</code> |
| <div class="block">Determines & initializes bloom filter meta data from user config.</div> |
| </td> |
| </tr> |
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| <h3>Method Summary</h3> |
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| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#actualErrorRate--">actualErrorRate</a></span>()</code> |
| <div class="block">Computes the error rate for this Bloom filter, taking into account the |
| actual number of hash functions and keys inserted.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>(package private) void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#add-byte:A-int-int-">add</a></span>(byte[] buf, |
| int offset, |
| int len)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#add-org.apache.hadoop.hbase.Cell-">add</a></span>(<a href="../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a> cell)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#allocBloom--">allocBloom</a></span>()</code> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>(package private) void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#bloomCheck-java.nio.ByteBuffer-">bloomCheck</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> bloom)</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#compactBloom--">compactBloom</a></span>()</code> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html" title="class in org.apache.hadoop.hbase.util">BloomFilterChunk</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#createAnother--">createAnother</a></span>()</code> |
| <div class="block">Creates another similar Bloom filter.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>(package private) static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#get-int-java.nio.ByteBuffer-int-">get</a></span>(int pos, |
| <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> bloomBuf, |
| int bloomOffset)</code> |
| <div class="block">Check if bit at specified index is 1.</div> |
| </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/util/BloomFilterChunk.html#getByteSize--">getByteSize</a></span>()</code> </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#getHashCount--">getHashCount</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/util/BloomFilterChunk.html#getHashType--">getHashType</a></span>()</code> </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/util/BloomFilterChunk.html#getKeyCount--">getKeyCount</a></span>()</code> </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/util/BloomFilterChunk.html#getMaxKeys--">getMaxKeys</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/util/BloomFilterChunk.html#sanityCheck--">sanityCheck</a></span>()</code> </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>(package private) void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#set-long-">set</a></span>(long pos)</code> |
| <div class="block">Set the bit at the specified index to 1.</div> |
| </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#setHashLoc-int-int-">setHashLoc</a></span>(int hash1, |
| int hash2)</code> </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <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/util/BloomFilterChunk.html#toString--">toString</a></span>()</code> </td> |
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| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#writeBloom-java.io.DataOutput-">writeBloom</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</a> out)</code> |
| <div class="block">Writes just the bloom filter to the output array</div> |
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| <h4>byteSize</h4> |
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| <div class="block">Bytes (B) in the array. This actually has to fit into an int.</div> |
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| <h4>hashCount</h4> |
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| <div class="block">Hash Function</div> |
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| <div class="block">The type of bloom</div> |
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| <h4>BloomFilterChunk</h4> |
| <pre>public <a href="../../../../../src-html/org/apache/hadoop/hbase/util/BloomFilterChunk.html#line.59">BloomFilterChunk</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a> meta) |
| 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>, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></pre> |
| <div class="block">Loads bloom filter meta data from file input.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>meta</code> - stored bloom meta data</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - meta data is invalid</dd> |
| <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> |
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| <pre>public <a href="../../../../../src-html/org/apache/hadoop/hbase/util/BloomFilterChunk.html#line.87">BloomFilterChunk</a>(int hashType, |
| <a href="../../../../../org/apache/hadoop/hbase/regionserver/BloomType.html" title="enum in org.apache.hadoop.hbase.regionserver">BloomType</a> bloomType)</pre> |
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| <pre>public <a href="../../../../../src-html/org/apache/hadoop/hbase/util/BloomFilterChunk.html#line.109">BloomFilterChunk</a>(int maxKeys, |
| double errorRate, |
| int hashType, |
| int foldFactor) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></pre> |
| <div class="block">Determines & initializes bloom filter meta data from user config. Call |
| <a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterChunk.html#allocBloom--"><code>allocBloom()</code></a> to allocate bloom filter data.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>maxKeys</code> - Maximum expected number of keys that will be stored in this |
| bloom</dd> |
| <dd><code>errorRate</code> - Desired false positive error rate. Lower rate = more |
| storage required</dd> |
| <dd><code>hashType</code> - Type of hash function to use</dd> |
| <dd><code>foldFactor</code> - When finished adding entries, you may be able to 'fold' |
| this bloom to save space. Tradeoff potentially excess bytes in |
| bloom for ability to fold if keyCount is exponentially greater |
| than maxKeys.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code></dd> |
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| <pre>public double <a href="../../../../../src-html/org/apache/hadoop/hbase/util/BloomFilterChunk.html#line.83">actualErrorRate</a>()</pre> |
| <div class="block">Computes the error rate for this Bloom filter, taking into account the |
| actual number of hash functions and keys inserted. The return value of |
| this function changes as a Bloom filter is being populated. Used for |
| reporting the actual error rate of compound Bloom filters when writing |
| them out.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>error rate for this particular Bloom filter</dd> |
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| <div class="block">Creates another similar Bloom filter. Does not copy the actual bits, and |
| sets the new filter's key count to zero.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a Bloom filter with the same configuration as this</dd> |
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| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/util/BloomFilterChunk.html#line.145">sanityCheck</a>() |
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| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code></dd> |
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| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/util/BloomFilterChunk.html#line.163">bloomCheck</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> bloom) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></pre> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code></dd> |
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| int len)</pre> |
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| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/util/BloomFilterChunk.html#line.219">set</a>(long pos)</pre> |
| <div class="block">Set the bit at the specified index to 1.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>pos</code> - index of bit</dd> |
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| int bloomOffset)</pre> |
| <div class="block">Check if bit at specified index is 1.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>pos</code> - index of bit</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if bit at specified index is 1, false if 0.</dd> |
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| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterBase.html#getKeyCount--">getKeyCount</a></code> in interface <code><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterBase.html" title="interface in org.apache.hadoop.hbase.util">BloomFilterBase</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The number of keys added to the bloom</dd> |
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| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterBase.html#getMaxKeys--">getMaxKeys</a></code> in interface <code><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterBase.html" title="interface in org.apache.hadoop.hbase.util">BloomFilterBase</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The max number of keys that can be inserted |
| to maintain the desired error rate</dd> |
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| <dd><code><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterBase.html#getByteSize--">getByteSize</a></code> in interface <code><a href="../../../../../org/apache/hadoop/hbase/util/BloomFilterBase.html" title="interface in org.apache.hadoop.hbase.util">BloomFilterBase</a></code></dd> |
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| <dd>Size of the bloom, in bytes</dd> |
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| <pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/util/BloomFilterChunk.html#line.301">writeBloom</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</a> out) |
| 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> |
| <div class="block">Writes just the bloom filter to the output array</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>out</code> - OutputStream to place bloom</dd> |
| <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> - Error writing bloom array</dd> |
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| <pre>public <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/util/BloomFilterChunk.html#line.314">toString</a>()</pre> |
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| <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> in class <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> |
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