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| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.hadoop.hbase.regionserver</a></div> |
| <h1 title="Class SegmentScanner" class="title">Class SegmentScanner</h1> |
| </div> |
| <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a> |
| <div class="inheritance">org.apache.hadoop.hbase.regionserver.SegmentScanner</div> |
| </div> |
| <section class="class-description" id="class-description"> |
| <dl class="notes"> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/Closeable.html" title="class or interface in java.io" class="external-link">Closeable</a></code>, <code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/AutoCloseable.html" title="class or interface in java.lang" class="external-link">AutoCloseable</a></code>, <code><a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code>, <code><a href="Shipper.html" title="interface in org.apache.hadoop.hbase.regionserver">Shipper</a></code></dd> |
| </dl> |
| <hr> |
| <div class="type-signature"><span class="annotations">@Private |
| </span><span class="modifiers">public class </span><span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-35">SegmentScanner</a></span> |
| <span class="extends-implements">extends <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a> |
| implements <a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></span></div> |
| <div class="block">A scanner of a single memstore segment.</div> |
| </section> |
| <section class="summary"> |
| <ul class="summary-list"> |
| <!-- =========== FIELD SUMMARY =========== --> |
| <li> |
| <section class="field-summary" id="field-summary"> |
| <h2>Field Summary</h2> |
| <div class="caption"><span>Fields</span></div> |
| <div class="summary-table three-column-summary"> |
| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Field</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color"><code>protected boolean</code></div> |
| <div class="col-second even-row-color"><code><a href="#closed" class="member-name-link">closed</a></code></div> |
| <div class="col-last even-row-color"> </div> |
| <div class="col-first odd-row-color"><code>protected <a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a></code></div> |
| <div class="col-second odd-row-color"><code><a href="#current" class="member-name-link">current</a></code></div> |
| <div class="col-last odd-row-color"> </div> |
| <div class="col-first even-row-color"><code>protected <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Iterator.html" title="class or interface in java.util" class="external-link">Iterator</a><<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a>></code></div> |
| <div class="col-second even-row-color"><code><a href="#iter" class="member-name-link">iter</a></code></div> |
| <div class="col-last even-row-color"> </div> |
| <div class="col-first odd-row-color"><code>private <a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a></code></div> |
| <div class="col-second odd-row-color"><code><a href="#last" class="member-name-link">last</a></code></div> |
| <div class="col-last odd-row-color"> </div> |
| <div class="col-first even-row-color"><code>private long</code></div> |
| <div class="col-second even-row-color"><code><a href="#readPoint" class="member-name-link">readPoint</a></code></div> |
| <div class="col-last even-row-color"> </div> |
| <div class="col-first odd-row-color"><code>protected final <a href="Segment.html" title="class in org.apache.hadoop.hbase.regionserver">Segment</a></code></div> |
| <div class="col-second odd-row-color"><code><a href="#segment" class="member-name-link">segment</a></code></div> |
| <div class="col-last odd-row-color"> </div> |
| <div class="col-first even-row-color"><code>private boolean</code></div> |
| <div class="col-second even-row-color"><code><a href="#stopSkippingKVsIfNextRow" class="member-name-link">stopSkippingKVsIfNextRow</a></code></div> |
| <div class="col-last even-row-color"> </div> |
| <div class="col-first odd-row-color"><code>private <a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a></code></div> |
| <div class="col-second odd-row-color"><code><a href="#stopSkippingKVsRow" class="member-name-link">stopSkippingKVsRow</a></code></div> |
| <div class="col-last odd-row-color"> </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="fields-inherited-from-class-org.apache.hadoop.hbase.regionserver.KeyValueScanner">Fields inherited from interface org.apache.hadoop.hbase.regionserver.<a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></h3> |
| <code><a href="KeyValueScanner.html#NO_NEXT_INDEXED_KEY">NO_NEXT_INDEXED_KEY</a></code></div> |
| </section> |
| </li> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <li> |
| <section class="constructor-summary" id="constructor-summary"> |
| <h2>Constructor Summary</h2> |
| <div class="caption"><span>Constructors</span></div> |
| <div class="summary-table three-column-summary"> |
| <div class="table-header col-first">Modifier</div> |
| <div class="table-header col-second">Constructor</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color"><code>protected </code></div> |
| <div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E(org.apache.hadoop.hbase.regionserver.Segment,long)" class="member-name-link">SegmentScanner</a><wbr>(<a href="Segment.html" title="class in org.apache.hadoop.hbase.regionserver">Segment</a> segment, |
| long readPoint)</code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Scanners are ordered from 0 (oldest) to newest in increasing order.</div> |
| </div> |
| </div> |
| </section> |
| </li> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <li> |
| <section class="method-summary" id="method-summary"> |
| <h2>Method Summary</h2> |
| <div id="method-summary-table"> |
| <div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div> |
| <div id="method-summary-table.tabpanel" role="tabpanel"> |
| <div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0"> |
| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Method</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#backwardSeek(org.apache.hadoop.hbase.ExtendedCell)" class="member-name-link">backwardSeek</a><wbr>(<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a> key)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Seek the scanner at or before the row of specified Cell, it firstly tries to seek the scanner |
| at or after the specified Cell, return if peek KeyValue of scanner has the same row with |
| specified Cell, otherwise seek the scanner at the first Cell of the row which is the previous |
| row of specified KeyValue</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#close()" class="member-name-link">close</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Close the KeyValue scanner.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#enforceSeek()" class="member-name-link">enforceSeek</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">This function should be never called on scanners that always do real seek operations (i.e.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>org.apache.hadoop.fs.Path</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getFilePath()" class="member-name-link">getFilePath</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>private <a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getHighest(org.apache.hadoop.hbase.ExtendedCell,org.apache.hadoop.hbase.ExtendedCell)" class="member-name-link">getHighest</a><wbr>(<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a> first, |
| <a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a> second)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Private internal method that returns the higher of the two key values, or null if they are both |
| null</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>protected <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Iterator.html" title="class or interface in java.util" class="external-link">Iterator</a><<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a>></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getIterator(org.apache.hadoop.hbase.ExtendedCell)" class="member-name-link">getIterator</a><wbr>(<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a> cell)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getNextIndexedKey()" class="member-name-link">getNextIndexedKey</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>private <a href="Segment.html" title="class in org.apache.hadoop.hbase.regionserver">Segment</a></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getSegment()" class="member-name-link">getSegment</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Private Methods</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#isFileScanner()" class="member-name-link">isFileScanner</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Returns true if this is a file scanner.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#next()" class="member-name-link">next</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Return the next Cell in this scanner, iterating the scanner</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#peek()" class="member-name-link">peek</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Look at the next Cell in this scanner, but do not iterate the scanner</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#realSeekDone()" class="member-name-link">realSeekDone</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">This scanner is working solely on the in-memory MemStore and doesn't work on store files, |
| MutableCellSetSegmentScanner always does the seek, therefore always returning true.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#recordBlockSize(java.util.function.IntConsumer)" class="member-name-link">recordBlockSize</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/function/IntConsumer.html" title="class or interface in java.util.function" class="external-link">IntConsumer</a> blockSizeConsumer)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Record the size of the current block in bytes, passing as an argument to the blockSizeConsumer.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#requestSeek(org.apache.hadoop.hbase.ExtendedCell,boolean,boolean)" class="member-name-link">requestSeek</a><wbr>(<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a> c, |
| boolean forward, |
| boolean useBloom)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Similar to <a href="KeyValueScanner.html#seek(org.apache.hadoop.hbase.ExtendedCell)"><code>KeyValueScanner.seek(org.apache.hadoop.hbase.ExtendedCell)</code></a> (or <a href="KeyValueScanner.html#reseek(org.apache.hadoop.hbase.ExtendedCell)"><code>KeyValueScanner.reseek(org.apache.hadoop.hbase.ExtendedCell)</code></a> if forward is true) but only does a seek operation |
| after checking that it is really necessary for the row/column combination specified by the kv |
| parameter.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#reseek(org.apache.hadoop.hbase.ExtendedCell)" class="member-name-link">reseek</a><wbr>(<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a> cell)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Reseek the scanner at or after the specified KeyValue.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#seek(org.apache.hadoop.hbase.ExtendedCell)" class="member-name-link">seek</a><wbr>(<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a> cell)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Seek the scanner at or after the specified Cell.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#seekToLastRow()" class="member-name-link">seekToLastRow</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Seek the scanner at the first KeyValue of last row</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#seekToPreviousRow(org.apache.hadoop.hbase.ExtendedCell)" class="member-name-link">seekToPreviousRow</a><wbr>(<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a> cell)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Seek the scanner at the first Cell of the row which is the previous row of specified key</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#shipped()" class="member-name-link">shipped</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Called after a batch of rows scanned (RPC) and set to be returned to client.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#shouldUseScanner(org.apache.hadoop.hbase.client.Scan,org.apache.hadoop.hbase.regionserver.HStore,long)" class="member-name-link">shouldUseScanner</a><wbr>(<a href="../client/Scan.html" title="class in org.apache.hadoop.hbase.client">Scan</a> scan, |
| <a href="HStore.html" title="class in org.apache.hadoop.hbase.regionserver">HStore</a> store, |
| long oldestUnexpiredTS)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">This functionality should be resolved in the higher level which is MemStoreScanner, currently |
| returns true as default.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#toString()" class="member-name-link">toString</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>protected void</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#updateCurrent()" class="member-name-link">updateCurrent</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Private internal method for iterating over the segment, skipping the cells with irrelevant MVCC</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class java.lang.<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3> |
| <code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-org.apache.hadoop.hbase.regionserver.KeyValueScanner">Methods inherited from interface org.apache.hadoop.hbase.regionserver.<a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></h3> |
| <code><a href="KeyValueScanner.html#getScannerOrder()">getScannerOrder</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ============ FIELD DETAIL =========== --> |
| <li> |
| <section class="field-details" id="field-detail"> |
| <h2>Field Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="segment"> |
| <h3>segment</h3> |
| <div class="member-signature"><span class="modifiers">protected final</span> <span class="return-type"><a href="Segment.html" title="class in org.apache.hadoop.hbase.regionserver">Segment</a></span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-39">segment</a></span></div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="readPoint"> |
| <h3>readPoint</h3> |
| <div class="member-signature"><span class="modifiers">private</span> <span class="return-type">long</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-41">readPoint</a></span></div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="iter"> |
| <h3>iter</h3> |
| <div class="member-signature"><span class="modifiers">protected</span> <span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Iterator.html" title="class or interface in java.util" class="external-link">Iterator</a><<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a>></span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-44">iter</a></span></div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="current"> |
| <h3>current</h3> |
| <div class="member-signature"><span class="modifiers">protected</span> <span class="return-type"><a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a></span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-46">current</a></span></div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="stopSkippingKVsIfNextRow"> |
| <h3>stopSkippingKVsIfNextRow</h3> |
| <div class="member-signature"><span class="modifiers">private</span> <span class="return-type">boolean</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-50">stopSkippingKVsIfNextRow</a></span></div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="stopSkippingKVsRow"> |
| <h3>stopSkippingKVsRow</h3> |
| <div class="member-signature"><span class="modifiers">private</span> <span class="return-type"><a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a></span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-52">stopSkippingKVsRow</a></span></div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="last"> |
| <h3>last</h3> |
| <div class="member-signature"><span class="modifiers">private</span> <span class="return-type"><a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a></span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-54">last</a></span></div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="closed"> |
| <h3>closed</h3> |
| <div class="member-signature"><span class="modifiers">protected</span> <span class="return-type">boolean</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-57">closed</a></span></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <li> |
| <section class="constructor-details" id="constructor-detail"> |
| <h2>Constructor Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="<init>(org.apache.hadoop.hbase.regionserver.Segment,long)"> |
| <h3>SegmentScanner</h3> |
| <div class="member-signature"><span class="modifiers">protected</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-62">SegmentScanner</a></span><wbr><span class="parameters">(<a href="Segment.html" title="class in org.apache.hadoop.hbase.regionserver">Segment</a> segment, |
| long readPoint)</span></div> |
| <div class="block">Scanners are ordered from 0 (oldest) to newest in increasing order.</div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li> |
| <section class="method-details" id="method-detail"> |
| <h2>Method Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="peek()"> |
| <h3>peek</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a></span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-80">peek</a></span>()</div> |
| <div class="block">Look at the next Cell in this scanner, but do not iterate the scanner</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="KeyValueScanner.html#peek()">peek</a></code> in interface <code><a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code></dd> |
| <dt>Returns:</dt> |
| <dd>the currently observed Cell</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="next()"> |
| <h3>next</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a></span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-96">next</a></span>() |
| throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></span></div> |
| <div class="block">Return the next Cell in this scanner, iterating the scanner</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="KeyValueScanner.html#next()">next</a></code> in interface <code><a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code></dd> |
| <dt>Returns:</dt> |
| <dd>the next Cell or null if end of scanner</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="seek(org.apache.hadoop.hbase.ExtendedCell)"> |
| <h3>seek</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">boolean</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-111">seek</a></span><wbr><span class="parameters">(<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a> cell)</span> |
| throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></span></div> |
| <div class="block">Seek the scanner at or after the specified Cell.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="KeyValueScanner.html#seek(org.apache.hadoop.hbase.ExtendedCell)">seek</a></code> in interface <code><a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code></dd> |
| <dt>Parameters:</dt> |
| <dd><code>cell</code> - seek value</dd> |
| <dt>Returns:</dt> |
| <dd>true if scanner has values left, false if end of scanner</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getIterator(org.apache.hadoop.hbase.ExtendedCell)"> |
| <h3>getIterator</h3> |
| <div class="member-signature"><span class="modifiers">protected</span> <span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Iterator.html" title="class or interface in java.util" class="external-link">Iterator</a><<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a>></span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-128">getIterator</a></span><wbr><span class="parameters">(<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a> cell)</span></div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="reseek(org.apache.hadoop.hbase.ExtendedCell)"> |
| <h3>reseek</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">boolean</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-139">reseek</a></span><wbr><span class="parameters">(<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a> cell)</span> |
| throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></span></div> |
| <div class="block">Reseek the scanner at or after the specified KeyValue. This method is guaranteed to seek at or |
| after the required key only if the key comes after the current position of the scanner. Should |
| not be used to seek to a key which may come before the current position.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="KeyValueScanner.html#reseek(org.apache.hadoop.hbase.ExtendedCell)">reseek</a></code> in interface <code><a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code></dd> |
| <dt>Parameters:</dt> |
| <dd><code>cell</code> - seek value (should be non-null)</dd> |
| <dt>Returns:</dt> |
| <dd>true if scanner has values left, false if end of scanner</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="backwardSeek(org.apache.hadoop.hbase.ExtendedCell)"> |
| <h3>backwardSeek</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">boolean</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-164">backwardSeek</a></span><wbr><span class="parameters">(<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a> key)</span> |
| throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></span></div> |
| <div class="block">Seek the scanner at or before the row of specified Cell, it firstly tries to seek the scanner |
| at or after the specified Cell, return if peek KeyValue of scanner has the same row with |
| specified Cell, otherwise seek the scanner at the first Cell of the row which is the previous |
| row of specified KeyValue</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="KeyValueScanner.html#backwardSeek(org.apache.hadoop.hbase.ExtendedCell)">backwardSeek</a></code> in interface <code><a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code></dd> |
| <dt>Parameters:</dt> |
| <dd><code>key</code> - seek Cell</dd> |
| <dt>Returns:</dt> |
| <dd>true if the scanner is at the valid KeyValue, false if such Cell does not exist</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="seekToPreviousRow(org.apache.hadoop.hbase.ExtendedCell)"> |
| <h3>seekToPreviousRow</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">boolean</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-182">seekToPreviousRow</a></span><wbr><span class="parameters">(<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a> cell)</span> |
| throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></span></div> |
| <div class="block">Seek the scanner at the first Cell of the row which is the previous row of specified key</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="KeyValueScanner.html#seekToPreviousRow(org.apache.hadoop.hbase.ExtendedCell)">seekToPreviousRow</a></code> in interface <code><a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code></dd> |
| <dt>Parameters:</dt> |
| <dd><code>cell</code> - seek value</dd> |
| <dt>Returns:</dt> |
| <dd>true if the scanner at the first valid Cell of previous row, false if not existing such |
| Cell</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="seekToLastRow()"> |
| <h3>seekToLastRow</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">boolean</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-219">seekToLastRow</a></span>() |
| throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></span></div> |
| <div class="block">Seek the scanner at the first KeyValue of last row</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="KeyValueScanner.html#seekToLastRow()">seekToLastRow</a></code> in interface <code><a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code></dd> |
| <dt>Returns:</dt> |
| <dd>true if scanner has values left, false if the underlying data is empty</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="close()"> |
| <h3>close</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-241">close</a></span>()</div> |
| <div class="block">Close the KeyValue scanner.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/AutoCloseable.html#close()" title="class or interface in java.lang" class="external-link">close</a></code> in interface <code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/AutoCloseable.html" title="class or interface in java.lang" class="external-link">AutoCloseable</a></code></dd> |
| <dt>Specified by:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/Closeable.html#close()" title="class or interface in java.io" class="external-link">close</a></code> in interface <code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/Closeable.html" title="class or interface in java.io" class="external-link">Closeable</a></code></dd> |
| <dt>Specified by:</dt> |
| <dd><code><a href="KeyValueScanner.html#close()">close</a></code> in interface <code><a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="shouldUseScanner(org.apache.hadoop.hbase.client.Scan,org.apache.hadoop.hbase.regionserver.HStore,long)"> |
| <h3>shouldUseScanner</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">boolean</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-255">shouldUseScanner</a></span><wbr><span class="parameters">(<a href="../client/Scan.html" title="class in org.apache.hadoop.hbase.client">Scan</a> scan, |
| <a href="HStore.html" title="class in org.apache.hadoop.hbase.regionserver">HStore</a> store, |
| long oldestUnexpiredTS)</span></div> |
| <div class="block">This functionality should be resolved in the higher level which is MemStoreScanner, currently |
| returns true as default. Doesn't throw IllegalStateException in order not to change the |
| signature of the overridden method</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="KeyValueScanner.html#shouldUseScanner(org.apache.hadoop.hbase.client.Scan,org.apache.hadoop.hbase.regionserver.HStore,long)">shouldUseScanner</a></code> in interface <code><a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code></dd> |
| <dt>Parameters:</dt> |
| <dd><code>scan</code> - the scan that we are selecting scanners for</dd> |
| <dd><code>store</code> - the store we are performing the scan on.</dd> |
| <dd><code>oldestUnexpiredTS</code> - the oldest timestamp we are interested in for this query, based on TTL</dd> |
| <dt>Returns:</dt> |
| <dd>true if the scanner should be included in the query</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="requestSeek(org.apache.hadoop.hbase.ExtendedCell,boolean,boolean)"> |
| <h3>requestSeek</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">boolean</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-261">requestSeek</a></span><wbr><span class="parameters">(<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a> c, |
| boolean forward, |
| boolean useBloom)</span> |
| throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></span></div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="KeyValueScanner.html#requestSeek(org.apache.hadoop.hbase.ExtendedCell,boolean,boolean)">KeyValueScanner</a></code></span></div> |
| <div class="block">Similar to <a href="KeyValueScanner.html#seek(org.apache.hadoop.hbase.ExtendedCell)"><code>KeyValueScanner.seek(org.apache.hadoop.hbase.ExtendedCell)</code></a> (or <a href="KeyValueScanner.html#reseek(org.apache.hadoop.hbase.ExtendedCell)"><code>KeyValueScanner.reseek(org.apache.hadoop.hbase.ExtendedCell)</code></a> if forward is true) but only does a seek operation |
| after checking that it is really necessary for the row/column combination specified by the kv |
| parameter. This function was added to avoid unnecessary disk seeks by checking row-column Bloom |
| filters before a seek on multi-column get/scan queries, and to optimize by looking up more |
| recent files first.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="KeyValueScanner.html#requestSeek(org.apache.hadoop.hbase.ExtendedCell,boolean,boolean)">requestSeek</a></code> in interface <code><a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code></dd> |
| <dd><code>forward</code> - do a forward-only "reseek" instead of a random-access seek</dd> |
| <dd><code>useBloom</code> - whether to enable multi-column Bloom filter optimization</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="realSeekDone()"> |
| <h3>realSeekDone</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">boolean</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-270">realSeekDone</a></span>()</div> |
| <div class="block">This scanner is working solely on the in-memory MemStore and doesn't work on store files, |
| MutableCellSetSegmentScanner always does the seek, therefore always returning true.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="KeyValueScanner.html#realSeekDone()">realSeekDone</a></code> in interface <code><a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="enforceSeek()"> |
| <h3>enforceSeek</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-280">enforceSeek</a></span>() |
| throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></span></div> |
| <div class="block">This function should be never called on scanners that always do real seek operations (i.e. most |
| of the scanners and also this one). The easiest way to achieve this is to call |
| <a href="#realSeekDone()"><code>realSeekDone()</code></a> first.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="KeyValueScanner.html#enforceSeek()">enforceSeek</a></code> in interface <code><a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code></dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="isFileScanner()"> |
| <h3>isFileScanner</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">boolean</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-286">isFileScanner</a></span>()</div> |
| <div class="block">Returns true if this is a file scanner. Otherwise a memory scanner is assumed.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="KeyValueScanner.html#isFileScanner()">isFileScanner</a></code> in interface <code><a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="recordBlockSize(java.util.function.IntConsumer)"> |
| <h3>recordBlockSize</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-291">recordBlockSize</a></span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/function/IntConsumer.html" title="class or interface in java.util.function" class="external-link">IntConsumer</a> blockSizeConsumer)</span></div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="KeyValueScanner.html#recordBlockSize(java.util.function.IntConsumer)">KeyValueScanner</a></code></span></div> |
| <div class="block">Record the size of the current block in bytes, passing as an argument to the blockSizeConsumer. |
| Implementations should ensure that blockSizeConsumer is only called once per block.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="KeyValueScanner.html#recordBlockSize(java.util.function.IntConsumer)">recordBlockSize</a></code> in interface <code><a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code></dd> |
| <dt>Parameters:</dt> |
| <dd><code>blockSizeConsumer</code> - to be called with block size in bytes, once per block.</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getFilePath()"> |
| <h3>getFilePath</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">org.apache.hadoop.fs.Path</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-296">getFilePath</a></span>()</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="KeyValueScanner.html#getFilePath()">getFilePath</a></code> in interface <code><a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code></dd> |
| <dt>Returns:</dt> |
| <dd>the file path if this is a file scanner, otherwise null.</dd> |
| <dt>See Also:</dt> |
| <dd> |
| <ul class="see-list-long"> |
| <li><a href="KeyValueScanner.html#isFileScanner()"><code>KeyValueScanner.isFileScanner()</code></a></li> |
| </ul> |
| </dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getNextIndexedKey()"> |
| <h3>getNextIndexedKey</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a></span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-305">getNextIndexedKey</a></span>()</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="KeyValueScanner.html#getNextIndexedKey()">getNextIndexedKey</a></code> in interface <code><a href="KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code></dd> |
| <dt>Returns:</dt> |
| <dd>the next key in the index (the key to seek to the next block) if known, or null |
| otherwise Not relevant for in-memory scanner</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="shipped()"> |
| <h3>shipped</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-314">shipped</a></span>() |
| throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></span></div> |
| <div class="block">Called after a batch of rows scanned (RPC) and set to be returned to client. Any in between |
| cleanup can be done here. Nothing to be done for MutableCellSetSegmentScanner.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="Shipper.html#shipped()">shipped</a></code> in interface <code><a href="Shipper.html" title="interface in org.apache.hadoop.hbase.regionserver">Shipper</a></code></dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="toString()"> |
| <h3>toString</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-320">toString</a></span>()</div> |
| <dl class="notes"> |
| <dt>Overrides:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a></code> in class <code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getSegment()"> |
| <h3>getSegment</h3> |
| <div class="member-signature"><span class="modifiers">private</span> <span class="return-type"><a href="Segment.html" title="class in org.apache.hadoop.hbase.regionserver">Segment</a></span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-330">getSegment</a></span>()</div> |
| <div class="block">Private Methods</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="updateCurrent()"> |
| <h3>updateCurrent</h3> |
| <div class="member-signature"><span class="modifiers">protected</span> <span class="return-type">void</span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-337">updateCurrent</a></span>()</div> |
| <div class="block">Private internal method for iterating over the segment, skipping the cells with irrelevant MVCC</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getHighest(org.apache.hadoop.hbase.ExtendedCell,org.apache.hadoop.hbase.ExtendedCell)"> |
| <h3>getHighest</h3> |
| <div class="member-signature"><span class="modifiers">private</span> <span class="return-type"><a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a></span> <span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/SegmentScanner.html#line-367">getHighest</a></span><wbr><span class="parameters">(<a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a> first, |
| <a href="../ExtendedCell.html" title="interface in org.apache.hadoop.hbase">ExtendedCell</a> second)</span></div> |
| <div class="block">Private internal method that returns the higher of the two key values, or null if they are both |
| null</div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </section> |
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