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| <pre>@InterfaceAudience.Private |
| public class <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreUtils.html#line.42">StoreUtils</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></pre> |
| <div class="block">Utility functions for region server storage layer.</div> |
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| <td class="colFirst"><code>private static org.slf4j.Logger</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreUtils.html#LOG">LOG</a></span></code> </td> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreUtils.html#StoreUtils--">StoreUtils</a></span>()</code> </td> |
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| <td class="colFirst"><code>static int</code></td> |
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| <div class="block">Returns the configured bytesPerChecksum value.</div> |
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| <td class="colFirst"><code>static <a href="../../../../../org/apache/hadoop/hbase/util/ChecksumType.html" title="enum in org.apache.hadoop.hbase.util">ChecksumType</a></code></td> |
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| <div class="block">Returns the configured checksum algorithm.</div> |
| </td> |
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| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/OptionalInt.html?is-external=true" title="class or interface in java.util">OptionalInt</a></code></td> |
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| <div class="block">Creates a deterministic hash code for store file collection.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>(package private) static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true" title="class or interface in java.util">Optional</a><byte[]></code></td> |
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| <a href="../../../../../org/apache/hadoop/hbase/CellComparator.html" title="interface in org.apache.hadoop.hbase">CellComparator</a> comparator)</code> |
| <div class="block">Gets the approximate mid-point of the given file that is optimal for use in splitting it.</div> |
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| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>(package private) static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true" title="class or interface in java.util">Optional</a><<a href="../../../../../org/apache/hadoop/hbase/regionserver/HStoreFile.html" title="class in org.apache.hadoop.hbase.regionserver">HStoreFile</a>></code></td> |
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| <div class="block">Gets the largest file (with reader) out of the list of files.</div> |
| </td> |
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| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static long</code></td> |
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| <div class="block">Gets lowest timestamp from candidate StoreFiles</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/OptionalLong.html?is-external=true" title="class or interface in java.util">OptionalLong</a></code></td> |
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| <div class="block">Return the largest memstoreTS found across all storefiles in the given list.</div> |
| </td> |
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| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/OptionalLong.html?is-external=true" title="class or interface in java.util">OptionalLong</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreUtils.html#getMaxSequenceIdInList-java.util.Collection-">getMaxSequenceIdInList</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="../../../../../org/apache/hadoop/hbase/regionserver/HStoreFile.html" title="class in org.apache.hadoop.hbase.regionserver">HStoreFile</a>> sfs)</code> |
| <div class="block">Return the highest sequence ID found across all storefiles in the given list.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>(package private) static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true" title="class or interface in java.util">Optional</a><byte[]></code></td> |
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| <a href="../../../../../org/apache/hadoop/hbase/CellComparator.html" title="interface in org.apache.hadoop.hbase">CellComparator</a> comparator)</code> |
| <div class="block">Gets the mid point of the largest file passed in as split point.</div> |
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| <td class="colFirst"><code>static boolean</code></td> |
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| <div class="block">Determines whether any files in the collection are references.</div> |
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| <pre>public static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/OptionalInt.html?is-external=true" title="class or interface in java.util">OptionalInt</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreUtils.html#line.49">getDeterministicRandomSeed</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="../../../../../org/apache/hadoop/hbase/regionserver/HStoreFile.html" title="class in org.apache.hadoop.hbase.regionserver">HStoreFile</a>> files)</pre> |
| <div class="block">Creates a deterministic hash code for store file collection.</div> |
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| <div class="block">Determines whether any files in the collection are references.</div> |
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| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>files</code> - The files.</dd> |
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| <div class="block">Gets lowest timestamp from candidate StoreFiles</div> |
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| <div class="block">Gets the largest file (with reader) out of the list of files.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>candidates</code> - The files to choose from.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The largest file; null if no file has a reader.</dd> |
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| <pre>public static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/OptionalLong.html?is-external=true" title="class or interface in java.util">OptionalLong</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreUtils.html#line.88">getMaxMemStoreTSInList</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="../../../../../org/apache/hadoop/hbase/regionserver/HStoreFile.html" title="class in org.apache.hadoop.hbase.regionserver">HStoreFile</a>> sfs)</pre> |
| <div class="block">Return the largest memstoreTS found across all storefiles in the given list. Store files that |
| were created by a mapreduce bulk load are ignored, as they do not correspond to any specific |
| put operation, and thus do not have a memstoreTS associated with them.</div> |
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| <pre>public static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/OptionalLong.html?is-external=true" title="class or interface in java.util">OptionalLong</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreUtils.html#line.96">getMaxSequenceIdInList</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="../../../../../org/apache/hadoop/hbase/regionserver/HStoreFile.html" title="class in org.apache.hadoop.hbase.regionserver">HStoreFile</a>> sfs)</pre> |
| <div class="block">Return the highest sequence ID found across all storefiles in the given list.</div> |
| </li> |
| </ul> |
| <a name="getFileSplitPoint-org.apache.hadoop.hbase.regionserver.HStoreFile-org.apache.hadoop.hbase.CellComparator-"> |
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| <pre>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true" title="class or interface in java.util">Optional</a><byte[]> <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreUtils.html#line.106">getFileSplitPoint</a>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/HStoreFile.html" title="class in org.apache.hadoop.hbase.regionserver">HStoreFile</a> file, |
| <a href="../../../../../org/apache/hadoop/hbase/CellComparator.html" title="interface in org.apache.hadoop.hbase">CellComparator</a> comparator) |
| 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">Gets the approximate mid-point of the given file that is optimal for use in splitting it.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>file</code> - the store file</dd> |
| <dd><code>comparator</code> - Comparator used to compare KVs.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The split point row, or null if splitting is not possible, or reader is null.</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></dd> |
| </dl> |
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| <pre>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true" title="class or interface in java.util">Optional</a><byte[]> <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreUtils.html#line.137">getSplitPoint</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="../../../../../org/apache/hadoop/hbase/regionserver/HStoreFile.html" title="class in org.apache.hadoop.hbase.regionserver">HStoreFile</a>> storefiles, |
| <a href="../../../../../org/apache/hadoop/hbase/CellComparator.html" title="interface in org.apache.hadoop.hbase">CellComparator</a> comparator) |
| 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">Gets the mid point of the largest file passed in as split point.</div> |
| <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> |
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| <pre>public static <a href="../../../../../org/apache/hadoop/hbase/util/ChecksumType.html" title="enum in org.apache.hadoop.hbase.util">ChecksumType</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreUtils.html#line.149">getChecksumType</a>(org.apache.hadoop.conf.Configuration conf)</pre> |
| <div class="block">Returns the configured checksum algorithm.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - The configuration</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The checksum algorithm that is set in the configuration</dd> |
| </dl> |
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| <pre>public static int <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreUtils.html#line.159">getBytesPerChecksum</a>(org.apache.hadoop.conf.Configuration conf)</pre> |
| <div class="block">Returns the configured bytesPerChecksum value.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - The configuration</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The bytesPerChecksum that is set in the configuration</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
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