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| <h2 title="Class HashPartitioner" class="title">Class HashPartitioner</h2> |
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| <pre>public class <span class="typeNameLabel">HashPartitioner</span> |
| extends <a href="../../../org/apache/spark/Partitioner.html" title="class in org.apache.spark">Partitioner</a></pre> |
| <div class="block">A <a href="../../../org/apache/spark/Partitioner.html" title="class in org.apache.spark"><code>Partitioner</code></a> that implements hash-based partitioning using |
| Java's <code>Object.hashCode</code>. |
| <p> |
| Java arrays have hashCodes that are based on the arrays' identities rather than their contents, |
| so attempting to partition an RDD[Array[_} or RDD[(Array[_], _)] using a HashPartitioner will |
| produce an unexpected or incorrect result.</div> |
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| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/HashPartitioner.html#getPartition-java.lang.Object-">getPartition</a></span>(Object key)</code> </td> |
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| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/HashPartitioner.html#hashCode--">hashCode</a></span>()</code> </td> |
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| <td class="colFirst"><code>int</code></td> |
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| <code><a href="../../../org/apache/spark/Partitioner.html#defaultPartitioner-org.apache.spark.rdd.RDD-scala.collection.Seq-">defaultPartitioner</a></code></li> |
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| <pre>public HashPartitioner(int partitions)</pre> |
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