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| <div class="subTitle">org.apache.hadoop.hbase.regionserver.querymatcher</div> |
| <h2 title="Class ExplicitColumnTracker" class="title">Class ExplicitColumnTracker</h2> |
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| <ul class="inheritance"> |
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| <li>org.apache.hadoop.hbase.regionserver.querymatcher.ExplicitColumnTracker</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html" title="interface in org.apache.hadoop.hbase.regionserver.querymatcher">ColumnTracker</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/ShipperListener.html" title="interface in org.apache.hadoop.hbase.regionserver">ShipperListener</a></dd> |
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| <br> |
| <pre>@InterfaceAudience.Private |
| public class <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.51">ExplicitColumnTracker</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/regionserver/querymatcher/ColumnTracker.html" title="interface in org.apache.hadoop.hbase.regionserver.querymatcher">ColumnTracker</a></pre> |
| <div class="block">This class is used for the tracking and enforcement of columns and numbers of versions during the |
| course of a Get or Scan operation, when explicit column qualifiers have been asked for in the |
| query. With a little magic (see <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.html" title="class in org.apache.hadoop.hbase.regionserver.querymatcher"><code>ScanQueryMatcher</code></a>), we can use this matcher for both scans |
| and gets. The main difference is 'next' and 'done' collapse for the scan case (since we see all |
| columns in order), and we only reset between rows. |
| <p> |
| This class is utilized by <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.html" title="class in org.apache.hadoop.hbase.regionserver.querymatcher"><code>ScanQueryMatcher</code></a> mainly through two methods: |
| <ul> |
| <li><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#checkColumn-org.apache.hadoop.hbase.Cell-byte-"><code>checkColumn(org.apache.hadoop.hbase.Cell, byte)</code></a> is called when a Put satisfies all other conditions of the query.</li> |
| <li><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#getNextRowOrNextColumn-org.apache.hadoop.hbase.Cell-"><code>getNextRowOrNextColumn(org.apache.hadoop.hbase.Cell)</code></a> is called whenever ScanQueryMatcher believes that the current |
| column should be skipped (by timestamp, filter etc.)</li> |
| </ul> |
| <p> |
| These two methods returns a |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.MatchCode.html" title="enum in org.apache.hadoop.hbase.regionserver.querymatcher"><code>ScanQueryMatcher.MatchCode</code></a> to define |
| what action should be taken. |
| <p> |
| This class is NOT thread-safe as queries are never multi-threaded</div> |
| </li> |
| </ul> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnCount.html" title="class in org.apache.hadoop.hbase.regionserver.querymatcher">ColumnCount</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#column">column</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnCount.html" title="class in org.apache.hadoop.hbase.regionserver.querymatcher">ColumnCount</a>[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#columns">columns</a></span></code> |
| <div class="block">Contains the list of columns that the ExplicitColumnTracker is tracking.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#index">index</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#latestTSOfCurrentColumn">latestTSOfCurrentColumn</a></span></code> |
| <div class="block">Keeps track of the latest timestamp included for current column.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#maxVersions">maxVersions</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#minVersions">minVersions</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#oldestStamp">oldestStamp</a></span></code> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
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| </a> |
| <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/regionserver/querymatcher/ExplicitColumnTracker.html#ExplicitColumnTracker-java.util.NavigableSet-int-int-long-">ExplicitColumnTracker</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/NavigableSet.html?is-external=true" title="class or interface in java.util">NavigableSet</a><byte[]> columns, |
| int minVersions, |
| int maxVersions, |
| long oldestUnexpiredTS)</code> |
| <div class="block">Default constructor.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#beforeShipped--">beforeShipped</a></span>()</code> |
| <div class="block">The action that needs to be performed before <a href="../../../../../../org/apache/hadoop/hbase/regionserver/Shipper.html#shipped--"><code>Shipper.shipped()</code></a> is performed</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.MatchCode.html" title="enum in org.apache.hadoop.hbase.regionserver.querymatcher">ScanQueryMatcher.MatchCode</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#checkColumn-org.apache.hadoop.hbase.Cell-byte-">checkColumn</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a> cell, |
| byte type)</code> |
| <div class="block">Checks if the column is present in the list of requested columns by returning the match code |
| instance.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.MatchCode.html" title="enum in org.apache.hadoop.hbase.regionserver.querymatcher">ScanQueryMatcher.MatchCode</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#checkVersions-org.apache.hadoop.hbase.Cell-long-byte-boolean-">checkVersions</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a> cell, |
| long timestamp, |
| byte type, |
| boolean ignoreCount)</code> |
| <div class="block">Keeps track of the number of versions for the columns asked for.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#done--">done</a></span>()</code> |
| <div class="block">Done when there are no more columns to match against.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#doneWithColumn-org.apache.hadoop.hbase.Cell-">doneWithColumn</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a> cell)</code> |
| <div class="block">This method is used to inform the column tracker that we are done with this column.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnCount.html" title="class in org.apache.hadoop.hbase.regionserver.querymatcher">ColumnCount</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#getColumnHint--">getColumnHint</a></span>()</code> |
| <div class="block">Used by matcher and scan/get to get a hint of the next column |
| to seek to after checkColumn() returns SKIP.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.MatchCode.html" title="enum in org.apache.hadoop.hbase.regionserver.querymatcher">ScanQueryMatcher.MatchCode</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#getNextRowOrNextColumn-org.apache.hadoop.hbase.Cell-">getNextRowOrNextColumn</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a> cell)</code> |
| <div class="block">Retrieve the MatchCode for the next row or column</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#isDone-long-">isDone</a></span>(long timestamp)</code> |
| <div class="block">Give the tracker a chance to declare it's done based on only the timestamp |
| to allow an early out.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>private boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#isExpired-long-">isExpired</a></span>(long timestamp)</code> </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#reset--">reset</a></span>()</code> |
| <div class="block">Resets the Matcher</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#resetTS--">resetTS</a></span>()</code> </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>private boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#sameAsPreviousTS-long-">sameAsPreviousTS</a></span>(long timestamp)</code> </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#setTS-long-">setTS</a></span>(long timestamp)</code> </td> |
| </tr> |
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| <h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
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| </li> |
| </ul> |
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| </div> |
| <div class="details"> |
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| <!-- ============ FIELD DETAIL =========== --> |
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| <h3>Field Detail</h3> |
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| <h4>maxVersions</h4> |
| <pre>private final int <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.53">maxVersions</a></pre> |
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| <h4>minVersions</h4> |
| <pre>private final int <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.54">minVersions</a></pre> |
| </li> |
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| <a name="columns"> |
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| </a> |
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| <h4>columns</h4> |
| <pre>private final <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnCount.html" title="class in org.apache.hadoop.hbase.regionserver.querymatcher">ColumnCount</a>[] <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.60">columns</a></pre> |
| <div class="block">Contains the list of columns that the ExplicitColumnTracker is tracking. Each ColumnCount |
| instance also tracks how many versions of the requested column have been returned.</div> |
| </li> |
| </ul> |
| <a name="index"> |
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| </a> |
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| <h4>index</h4> |
| <pre>private int <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.61">index</a></pre> |
| </li> |
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| <h4>column</h4> |
| <pre>private <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnCount.html" title="class in org.apache.hadoop.hbase.regionserver.querymatcher">ColumnCount</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.62">column</a></pre> |
| </li> |
| </ul> |
| <a name="latestTSOfCurrentColumn"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>latestTSOfCurrentColumn</h4> |
| <pre>private long <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.66">latestTSOfCurrentColumn</a></pre> |
| <div class="block">Keeps track of the latest timestamp included for current column. Used to eliminate duplicates.</div> |
| </li> |
| </ul> |
| <a name="oldestStamp"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>oldestStamp</h4> |
| <pre>private long <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.67">oldestStamp</a></pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.detail"> |
| <!-- --> |
| </a> |
| <h3>Constructor Detail</h3> |
| <a name="ExplicitColumnTracker-java.util.NavigableSet-int-int-long-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>ExplicitColumnTracker</h4> |
| <pre>public <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.76">ExplicitColumnTracker</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/NavigableSet.html?is-external=true" title="class or interface in java.util">NavigableSet</a><byte[]> columns, |
| int minVersions, |
| int maxVersions, |
| long oldestUnexpiredTS)</pre> |
| <div class="block">Default constructor.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>columns</code> - columns specified user in query</dd> |
| <dd><code>minVersions</code> - minimum number of versions to keep</dd> |
| <dd><code>maxVersions</code> - maximum versions to return per column</dd> |
| <dd><code>oldestUnexpiredTS</code> - the oldest timestamp we are interested in, based on TTL</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a name="done--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>done</h4> |
| <pre>public boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.93">done</a>()</pre> |
| <div class="block">Done when there are no more columns to match against.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html#done--">done</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html" title="interface in org.apache.hadoop.hbase.regionserver.querymatcher">ColumnTracker</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><code>true</code> when done.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getColumnHint--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getColumnHint</h4> |
| <pre>public <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnCount.html" title="class in org.apache.hadoop.hbase.regionserver.querymatcher">ColumnCount</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.98">getColumnHint</a>()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html#getColumnHint--">ColumnTracker</a></code></span></div> |
| <div class="block">Used by matcher and scan/get to get a hint of the next column |
| to seek to after checkColumn() returns SKIP. Returns the next interesting |
| column we want, or NULL there is none (wildcard scanner). |
| |
| Implementations aren't required to return anything useful unless the most recent |
| call was to checkColumn() and the return code was SKIP. This is pretty implementation |
| detail-y, but optimizations are like that.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html#getColumnHint--">getColumnHint</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html" title="interface in org.apache.hadoop.hbase.regionserver.querymatcher">ColumnTracker</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>null, or a ColumnCount that we should seek to</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="checkColumn-org.apache.hadoop.hbase.Cell-byte-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>checkColumn</h4> |
| <pre>public <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.MatchCode.html" title="enum in org.apache.hadoop.hbase.regionserver.querymatcher">ScanQueryMatcher.MatchCode</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.106">checkColumn</a>(<a href="../../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a> cell, |
| byte type)</pre> |
| <div class="block">Checks if the column is present in the list of requested columns by returning the match code |
| instance. It does not check against the number of versions for the columns asked for. To do the |
| version check, one has to call <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html#checkVersions-org.apache.hadoop.hbase.Cell-long-byte-boolean-"><code>ColumnTracker.checkVersions(Cell, long, byte, boolean)</code></a> |
| method based on the return type (INCLUDE) of this method. The values that can be returned by |
| this method are <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.MatchCode.html#INCLUDE"><code>ScanQueryMatcher.MatchCode.INCLUDE</code></a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.MatchCode.html#SEEK_NEXT_COL"><code>ScanQueryMatcher.MatchCode.SEEK_NEXT_COL</code></a> and |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.MatchCode.html#SEEK_NEXT_ROW"><code>ScanQueryMatcher.MatchCode.SEEK_NEXT_ROW</code></a>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html#checkColumn-org.apache.hadoop.hbase.Cell-byte-">checkColumn</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html" title="interface in org.apache.hadoop.hbase.regionserver.querymatcher">ColumnTracker</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>cell</code> - a cell with the column to match against</dd> |
| <dd><code>type</code> - The type of the Cell</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The match code instance.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="checkVersions-org.apache.hadoop.hbase.Cell-long-byte-boolean-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>checkVersions</h4> |
| <pre>public <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.MatchCode.html" title="enum in org.apache.hadoop.hbase.regionserver.querymatcher">ScanQueryMatcher.MatchCode</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.156">checkVersions</a>(<a href="../../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a> cell, |
| long timestamp, |
| byte type, |
| boolean ignoreCount) |
| 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"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html#checkVersions-org.apache.hadoop.hbase.Cell-long-byte-boolean-">ColumnTracker</a></code></span></div> |
| <div class="block">Keeps track of the number of versions for the columns asked for. It assumes that the user has |
| already checked if the cell needs to be included by calling the |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html#checkColumn-org.apache.hadoop.hbase.Cell-byte-"><code>ColumnTracker.checkColumn(Cell, byte)</code></a> method. The enum values returned by this method |
| are <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.MatchCode.html#SKIP"><code>ScanQueryMatcher.MatchCode.SKIP</code></a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.MatchCode.html#INCLUDE"><code>ScanQueryMatcher.MatchCode.INCLUDE</code></a>, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.MatchCode.html#INCLUDE_AND_SEEK_NEXT_COL"><code>ScanQueryMatcher.MatchCode.INCLUDE_AND_SEEK_NEXT_COL</code></a> and <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.MatchCode.html#INCLUDE_AND_SEEK_NEXT_ROW"><code>ScanQueryMatcher.MatchCode.INCLUDE_AND_SEEK_NEXT_ROW</code></a>. |
| Implementations which include all the columns could just return <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.MatchCode.html#INCLUDE"><code>ScanQueryMatcher.MatchCode.INCLUDE</code></a> in |
| the <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html#checkColumn-org.apache.hadoop.hbase.Cell-byte-"><code>ColumnTracker.checkColumn(Cell, byte)</code></a> method and perform all the operations in this |
| checkVersions method.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html#checkVersions-org.apache.hadoop.hbase.Cell-long-byte-boolean-">checkVersions</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html" title="interface in org.apache.hadoop.hbase.regionserver.querymatcher">ColumnTracker</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>cell</code> - a cell with the column to match against</dd> |
| <dd><code>timestamp</code> - The timestamp of the cell.</dd> |
| <dd><code>type</code> - the type of the key value (Put/Delete)</dd> |
| <dd><code>ignoreCount</code> - indicates if the KV needs to be excluded while counting (used during |
| compactions. We only count KV's that are older than all the scanners' read points.)</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the scan query matcher match code instance</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> - in case there is an internal consistency problem caused by a data |
| corruption.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="reset--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>reset</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.188">reset</a>()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html#reset--">ColumnTracker</a></code></span></div> |
| <div class="block">Resets the Matcher</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html#reset--">reset</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html" title="interface in org.apache.hadoop.hbase.regionserver.querymatcher">ColumnTracker</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="resetTS--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>resetTS</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.197">resetTS</a>()</pre> |
| </li> |
| </ul> |
| <a name="setTS-long-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setTS</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.201">setTS</a>(long timestamp)</pre> |
| </li> |
| </ul> |
| <a name="sameAsPreviousTS-long-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>sameAsPreviousTS</h4> |
| <pre>private boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.205">sameAsPreviousTS</a>(long timestamp)</pre> |
| </li> |
| </ul> |
| <a name="isExpired-long-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isExpired</h4> |
| <pre>private boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.209">isExpired</a>(long timestamp)</pre> |
| </li> |
| </ul> |
| <a name="doneWithColumn-org.apache.hadoop.hbase.Cell-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>doneWithColumn</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.214">doneWithColumn</a>(<a href="../../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a> cell)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html#doneWithColumn-org.apache.hadoop.hbase.Cell-">ColumnTracker</a></code></span></div> |
| <div class="block">This method is used to inform the column tracker that we are done with this column. We may get |
| this information from external filters or timestamp range and we then need to indicate this |
| information to tracker. It is currently implemented for ExplicitColumnTracker.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html#doneWithColumn-org.apache.hadoop.hbase.Cell-">doneWithColumn</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html" title="interface in org.apache.hadoop.hbase.regionserver.querymatcher">ColumnTracker</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getNextRowOrNextColumn-org.apache.hadoop.hbase.Cell-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getNextRowOrNextColumn</h4> |
| <pre>public <a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.MatchCode.html" title="enum in org.apache.hadoop.hbase.regionserver.querymatcher">ScanQueryMatcher.MatchCode</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.236">getNextRowOrNextColumn</a>(<a href="../../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a> cell)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html#getNextRowOrNextColumn-org.apache.hadoop.hbase.Cell-">ColumnTracker</a></code></span></div> |
| <div class="block">Retrieve the MatchCode for the next row or column</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html#getNextRowOrNextColumn-org.apache.hadoop.hbase.Cell-">getNextRowOrNextColumn</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html" title="interface in org.apache.hadoop.hbase.regionserver.querymatcher">ColumnTracker</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="isDone-long-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isDone</h4> |
| <pre>public boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.247">isDone</a>(long timestamp)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html#isDone-long-">ColumnTracker</a></code></span></div> |
| <div class="block">Give the tracker a chance to declare it's done based on only the timestamp |
| to allow an early out.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html#isDone-long-">isDone</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/querymatcher/ColumnTracker.html" title="interface in org.apache.hadoop.hbase.regionserver.querymatcher">ColumnTracker</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><code>true</code> to early out based on timestamp.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="beforeShipped--"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>beforeShipped</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/querymatcher/ExplicitColumnTracker.html#line.252">beforeShipped</a>() |
| 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"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/ShipperListener.html#beforeShipped--">ShipperListener</a></code></span></div> |
| <div class="block">The action that needs to be performed before <a href="../../../../../../org/apache/hadoop/hbase/regionserver/Shipper.html#shipped--"><code>Shipper.shipped()</code></a> is performed</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/ShipperListener.html#beforeShipped--">beforeShipped</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/ShipperListener.html" title="interface in org.apache.hadoop.hbase.regionserver">ShipperListener</a></code></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> |
| </li> |
| </ul> |
| </li> |
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