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| <div class="subTitle">org.apache.drill.exec.physical.impl.join</div> |
| <h2 title="Class BatchSizePredictorImpl" class="title">Class BatchSizePredictorImpl</h2> |
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| <li>org.apache.drill.exec.physical.impl.join.BatchSizePredictorImpl</li> |
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| <dd><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html" title="interface in org.apache.drill.exec.physical.impl.join">BatchSizePredictor</a></dd> |
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| <pre>public class <span class="typeNameLabel">BatchSizePredictorImpl</span> |
| 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/drill/exec/physical/impl/join/BatchSizePredictor.html" title="interface in org.apache.drill.exec.physical.impl.join">BatchSizePredictor</a></pre> |
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| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictorImpl.Factory.html" title="class in org.apache.drill.exec.physical.impl.join">BatchSizePredictorImpl.Factory</a></span></code> </td> |
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| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictorImpl.html#BatchSizePredictorImpl-org.apache.drill.exec.record.RecordBatch-double-double-">BatchSizePredictorImpl</a></span>(<a href="../../../../../../../org/apache/drill/exec/record/RecordBatch.html" title="interface in org.apache.drill.exec.record">RecordBatch</a> batch, |
| double fragmentationFactor, |
| double safetyFactor)</code> </td> |
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| <td class="colFirst"><code>static long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictorImpl.html#computeMaxBatchSize-long-int-int-double-double-boolean-">computeMaxBatchSize</a></span>(long incomingBatchSize, |
| int incomingNumRecords, |
| int desiredNumRecords, |
| double fragmentationFactor, |
| double safetyFactor, |
| boolean reserveHash)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictorImpl.html#computeMaxBatchSizeNoHash-long-int-int-double-double-">computeMaxBatchSizeNoHash</a></span>(long incomingBatchSize, |
| int incomingNumRecords, |
| int desiredNumRecords, |
| double fragmentationFactor, |
| double safetyFactor)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictorImpl.html#computePartitionBatchSize-long-int-int-">computePartitionBatchSize</a></span>(long incomingBatchSize, |
| int incomingNumRecords, |
| int desiredNumRecords)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictorImpl.html#computeValueVectorSize-long-long-">computeValueVectorSize</a></span>(long numRecords, |
| long byteSize)</code> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>static long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictorImpl.html#computeValueVectorSize-long-long-double-">computeValueVectorSize</a></span>(long numRecords, |
| long byteSize, |
| double safetyFactor)</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictorImpl.html#getBatchSize--">getBatchSize</a></span>()</code> |
| <div class="block">Gets the batchSize computed in the call to <a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#updateStats--"><code>BatchSizePredictor.updateStats()</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictorImpl.html#getBatchSizeEstimate-org.apache.drill.exec.record.RecordBatch-">getBatchSizeEstimate</a></span>(<a href="../../../../../../../org/apache/drill/exec/record/RecordBatch.html" title="interface in org.apache.drill.exec.record">RecordBatch</a> recordBatch)</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictorImpl.html#getNumRecords--">getNumRecords</a></span>()</code> |
| <div class="block">Gets the number of records computed in the call to <a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#updateStats--"><code>BatchSizePredictor.updateStats()</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictorImpl.html#hadDataLastTime--">hadDataLastTime</a></span>()</code> |
| <div class="block">True if the input batch had records in the last call to <a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#updateStats--"><code>BatchSizePredictor.updateStats()</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictorImpl.html#predictBatchSize-int-boolean-">predictBatchSize</a></span>(int desiredNumRecords, |
| boolean reserveHash)</code> |
| <div class="block">Predicts the size of a batch using the current collected stats.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>static long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictorImpl.html#roundUpToPowerOf2-long-">roundUpToPowerOf2</a></span>(long num)</code> </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictorImpl.html#updateStats--">updateStats</a></span>()</code> |
| <div class="block">This method can be called multiple times to collect stats about the latest data in the provided record batch.</div> |
| </td> |
| </tr> |
| </table> |
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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> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a name="BatchSizePredictorImpl-org.apache.drill.exec.record.RecordBatch-double-double-"> |
| <!-- --> |
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| <ul class="blockListLast"> |
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| <h4>BatchSizePredictorImpl</h4> |
| <pre>public BatchSizePredictorImpl(<a href="../../../../../../../org/apache/drill/exec/record/RecordBatch.html" title="interface in org.apache.drill.exec.record">RecordBatch</a> batch, |
| double fragmentationFactor, |
| double safetyFactor)</pre> |
| </li> |
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| <!-- ============ METHOD DETAIL ========== --> |
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| <h3>Method Detail</h3> |
| <a name="getBatchSize--"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>getBatchSize</h4> |
| <pre>public long getBatchSize()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#getBatchSize--">BatchSizePredictor</a></code></span></div> |
| <div class="block">Gets the batchSize computed in the call to <a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#updateStats--"><code>BatchSizePredictor.updateStats()</code></a>. Returns 0 if <a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#hadDataLastTime--"><code>BatchSizePredictor.hadDataLastTime()</code></a> is false.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#getBatchSize--">getBatchSize</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html" title="interface in org.apache.drill.exec.physical.impl.join">BatchSizePredictor</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Gets the batchSize computed in the call to <a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#updateStats--"><code>BatchSizePredictor.updateStats()</code></a>. Returns 0 if <a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#hadDataLastTime--"><code>BatchSizePredictor.hadDataLastTime()</code></a> is false.</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>getNumRecords</h4> |
| <pre>public int getNumRecords()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#getNumRecords--">BatchSizePredictor</a></code></span></div> |
| <div class="block">Gets the number of records computed in the call to <a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#updateStats--"><code>BatchSizePredictor.updateStats()</code></a>. Returns 0 if <a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#hadDataLastTime--"><code>BatchSizePredictor.hadDataLastTime()</code></a> is false.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#getNumRecords--">getNumRecords</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html" title="interface in org.apache.drill.exec.physical.impl.join">BatchSizePredictor</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Gets the number of records computed in the call to <a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#updateStats--"><code>BatchSizePredictor.updateStats()</code></a>. Returns 0 if <a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#hadDataLastTime--"><code>BatchSizePredictor.hadDataLastTime()</code></a> is false.</dd> |
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| <h4>hadDataLastTime</h4> |
| <pre>public boolean hadDataLastTime()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#hadDataLastTime--">BatchSizePredictor</a></code></span></div> |
| <div class="block">True if the input batch had records in the last call to <a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#updateStats--"><code>BatchSizePredictor.updateStats()</code></a>. False otherwise.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#hadDataLastTime--">hadDataLastTime</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html" title="interface in org.apache.drill.exec.physical.impl.join">BatchSizePredictor</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>True if the input batch had records in the last call to <a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#updateStats--"><code>BatchSizePredictor.updateStats()</code></a>. False otherwise.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="updateStats--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>updateStats</h4> |
| <pre>public void updateStats()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#updateStats--">BatchSizePredictor</a></code></span></div> |
| <div class="block">This method can be called multiple times to collect stats about the latest data in the provided record batch. These |
| stats are used to predict batch sizes. If the batch currently has no data, this method is a noop. This method must be |
| called at least once before <a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#predictBatchSize-int-boolean-"><code>BatchSizePredictor.predictBatchSize(int, boolean)</code></a>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#updateStats--">updateStats</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html" title="interface in org.apache.drill.exec.physical.impl.join">BatchSizePredictor</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>predictBatchSize</h4> |
| <pre>public long predictBatchSize(int desiredNumRecords, |
| boolean reserveHash)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#predictBatchSize-int-boolean-">BatchSizePredictor</a></code></span></div> |
| <div class="block">Predicts the size of a batch using the current collected stats.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html#predictBatchSize-int-boolean-">predictBatchSize</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/physical/impl/join/BatchSizePredictor.html" title="interface in org.apache.drill.exec.physical.impl.join">BatchSizePredictor</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>desiredNumRecords</code> - The number of records contained in the batch whose size we want to predict.</dd> |
| <dd><code>reserveHash</code> - Whether or not to include a column containing hash values.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The size of the predicted batch.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="computeValueVectorSize-long-long-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>computeValueVectorSize</h4> |
| <pre>public static long computeValueVectorSize(long numRecords, |
| long byteSize)</pre> |
| </li> |
| </ul> |
| <a name="computeValueVectorSize-long-long-double-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>computeValueVectorSize</h4> |
| <pre>public static long computeValueVectorSize(long numRecords, |
| long byteSize, |
| double safetyFactor)</pre> |
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| </a> |
| <ul class="blockList"> |
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| <h4>roundUpToPowerOf2</h4> |
| <pre>public static long roundUpToPowerOf2(long num)</pre> |
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| <a name="computeMaxBatchSizeNoHash-long-int-int-double-double-"> |
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| </a> |
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| <h4>computeMaxBatchSizeNoHash</h4> |
| <pre>public static long computeMaxBatchSizeNoHash(long incomingBatchSize, |
| int incomingNumRecords, |
| int desiredNumRecords, |
| double fragmentationFactor, |
| double safetyFactor)</pre> |
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| <a name="computeMaxBatchSize-long-int-int-double-double-boolean-"> |
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| <h4>computeMaxBatchSize</h4> |
| <pre>public static long computeMaxBatchSize(long incomingBatchSize, |
| int incomingNumRecords, |
| int desiredNumRecords, |
| double fragmentationFactor, |
| double safetyFactor, |
| boolean reserveHash)</pre> |
| </li> |
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| </a> |
| <ul class="blockList"> |
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| <h4>computePartitionBatchSize</h4> |
| <pre>public static long computePartitionBatchSize(long incomingBatchSize, |
| int incomingNumRecords, |
| int desiredNumRecords)</pre> |
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| <a name="getBatchSizeEstimate-org.apache.drill.exec.record.RecordBatch-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>getBatchSizeEstimate</h4> |
| <pre>public static long getBatchSizeEstimate(<a href="../../../../../../../org/apache/drill/exec/record/RecordBatch.html" title="interface in org.apache.drill.exec.record">RecordBatch</a> recordBatch)</pre> |
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