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<h1 title="Package" class="title">Package org.apache.spark</h1>
<div class="docSummary">
<div class="block">Core Spark classes in Scala.</div>
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<p>See: <a href="#package_description">Description</a></p>
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<th class="colFirst" scope="col">Interface</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><a href="../../../org/apache/spark/AccumulableParam.html" title="interface in org.apache.spark">AccumulableParam</a><R,T></td>
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<div class="block">Helper object defining how to accumulate values of a particular type.</div>
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<td class="colFirst"><a href="../../../org/apache/spark/AccumulatorParam.html" title="interface in org.apache.spark">AccumulatorParam</a><T></td>
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<div class="block">A simpler version of <a href="../../../org/apache/spark/AccumulableParam.html" title="interface in org.apache.spark"><code>AccumulableParam</code></a> where the only data type you can add
in is the same type as the accumulated value.</div>
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<td class="colFirst"><a href="../../../org/apache/spark/CleanupTask.html" title="interface in org.apache.spark">CleanupTask</a></td>
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<div class="block">Classes that represent cleaning tasks.</div>
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<td class="colFirst"><a href="../../../org/apache/spark/FutureAction.html" title="interface in org.apache.spark">FutureAction</a><T></td>
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<div class="block">A future for the result of an action to support cancellation.</div>
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<td class="colFirst"><a href="../../../org/apache/spark/Logging.html" title="interface in org.apache.spark">Logging</a></td>
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<div class="block">:: DeveloperApi ::
Utility trait for classes that want to log data.</div>
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<td class="colFirst"><a href="../../../org/apache/spark/Partition.html" title="interface in org.apache.spark">Partition</a></td>
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<div class="block">An identifier for a partition in an RDD.</div>
</td>
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<td class="colFirst"><a href="../../../org/apache/spark/SparkJobInfo.html" title="interface in org.apache.spark">SparkJobInfo</a></td>
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<div class="block">Exposes information about Spark Jobs.</div>
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<td class="colFirst"><a href="../../../org/apache/spark/SparkStageInfo.html" title="interface in org.apache.spark">SparkStageInfo</a></td>
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<div class="block">Exposes information about Spark Stages.</div>
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<td class="colFirst"><a href="../../../org/apache/spark/TaskEndReason.html" title="interface in org.apache.spark">TaskEndReason</a></td>
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<div class="block">:: DeveloperApi ::
Various possible reasons why a task ended.</div>
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<td class="colFirst"><a href="../../../org/apache/spark/TaskFailedReason.html" title="interface in org.apache.spark">TaskFailedReason</a></td>
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<div class="block">:: DeveloperApi ::
Various possible reasons why a task failed.</div>
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<td class="colFirst"><a href="../../../org/apache/spark/Accumulable.html" title="class in org.apache.spark">Accumulable</a><R,T></td>
<td class="colLast">
<div class="block">A data type that can be accumulated, ie has an commutative and associative "add" operation,
but where the result type, <code>R</code>, may be different from the element type being added, <code>T</code>.</div>
</td>
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<td class="colFirst"><a href="../../../org/apache/spark/Accumulator.html" title="class in org.apache.spark">Accumulator</a><T></td>
<td class="colLast">
<div class="block">A simpler value of <a href="../../../org/apache/spark/Accumulable.html" title="class in org.apache.spark"><code>Accumulable</code></a> where the result type being accumulated is the same
as the types of elements being merged, i.e.</div>
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<td class="colFirst"><a href="../../../org/apache/spark/AccumulatorParam.DoubleAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.DoubleAccumulatorParam$</a></td>
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<td class="colFirst"><a href="../../../org/apache/spark/AccumulatorParam.FloatAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.FloatAccumulatorParam$</a></td>
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<td class="colFirst"><a href="../../../org/apache/spark/AccumulatorParam.IntAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.IntAccumulatorParam$</a></td>
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<td class="colFirst"><a href="../../../org/apache/spark/AccumulatorParam.LongAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.LongAccumulatorParam$</a></td>
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<td class="colFirst"><a href="../../../org/apache/spark/Aggregator.html" title="class in org.apache.spark">Aggregator</a><K,V,C></td>
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<div class="block">:: DeveloperApi ::
A set of functions used to aggregate data.</div>
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<td class="colFirst"><a href="../../../org/apache/spark/CleanAccum.html" title="class in org.apache.spark">CleanAccum</a></td>
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<td class="colFirst"><a href="../../../org/apache/spark/CleanRDD.html" title="class in org.apache.spark">CleanRDD</a></td>
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<td class="colFirst"><a href="../../../org/apache/spark/CleanShuffle.html" title="class in org.apache.spark">CleanShuffle</a></td>
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<td class="colFirst"><a href="../../../org/apache/spark/CleanupTaskWeakReference.html" title="class in org.apache.spark">CleanupTaskWeakReference</a></td>
<td class="colLast">
<div class="block">A WeakReference associated with a CleanupTask.</div>
</td>
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<td class="colFirst"><a href="../../../org/apache/spark/ComplexFutureAction.html" title="class in org.apache.spark">ComplexFutureAction</a><T></td>
<td class="colLast">
<div class="block">A <a href="../../../org/apache/spark/FutureAction.html" title="interface in org.apache.spark"><code>FutureAction</code></a> for actions that could trigger multiple Spark jobs.</div>
</td>
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<td class="colFirst"><a href="../../../org/apache/spark/Dependency.html" title="class in org.apache.spark">Dependency</a><T></td>
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<div class="block">:: DeveloperApi ::
Base class for dependencies.</div>
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<td class="colFirst"><a href="../../../org/apache/spark/ExceptionFailure.html" title="class in org.apache.spark">ExceptionFailure</a></td>
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<div class="block">:: DeveloperApi ::
Task failed due to a runtime exception.</div>
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<td class="colFirst"><a href="../../../org/apache/spark/ExecutorLostFailure.html" title="class in org.apache.spark">ExecutorLostFailure</a></td>
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<div class="block">:: DeveloperApi ::
The task failed because the executor that it was running on was lost.</div>
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<td class="colFirst"><a href="../../../org/apache/spark/ExecutorRegistered.html" title="class in org.apache.spark">ExecutorRegistered</a></td>
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<td class="colFirst"><a href="../../../org/apache/spark/FetchFailed.html" title="class in org.apache.spark">FetchFailed</a></td>
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<div class="block">:: DeveloperApi ::
Task failed to fetch shuffle data from a remote node.</div>
</td>
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<td class="colFirst"><a href="../../../org/apache/spark/HashPartitioner.html" title="class in org.apache.spark">HashPartitioner</a></td>
<td class="colLast">
<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>.</div>
</td>
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<td class="colFirst"><a href="../../../org/apache/spark/InterruptibleIterator.html" title="class in org.apache.spark">InterruptibleIterator</a><T></td>
<td class="colLast">
<div class="block">:: DeveloperApi ::
An iterator that wraps around an existing iterator to provide task killing functionality.</div>
</td>
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<td class="colFirst"><a href="../../../org/apache/spark/JavaSparkListener.html" title="class in org.apache.spark">JavaSparkListener</a></td>
<td class="colLast">
<div class="block">Java clients should extend this class instead of implementing
SparkListener directly.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../org/apache/spark/NarrowDependency.html" title="class in org.apache.spark">NarrowDependency</a><T></td>
<td class="colLast">
<div class="block">:: DeveloperApi ::
Base class for dependencies where each partition of the child RDD depends on a small number
of partitions of the parent RDD.</div>
</td>
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<td class="colFirst"><a href="../../../org/apache/spark/OneToOneDependency.html" title="class in org.apache.spark">OneToOneDependency</a><T></td>
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<div class="block">:: DeveloperApi ::
Represents a one-to-one dependency between partitions of the parent and child RDDs.</div>
</td>
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<td class="colFirst"><a href="../../../org/apache/spark/Partitioner.html" title="class in org.apache.spark">Partitioner</a></td>
<td class="colLast">
<div class="block">An object that defines how the elements in a key-value pair RDD are partitioned by key.</div>
</td>
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<td class="colFirst"><a href="../../../org/apache/spark/RangeDependency.html" title="class in org.apache.spark">RangeDependency</a><T></td>
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<div class="block">:: DeveloperApi ::
Represents a one-to-one dependency between ranges of partitions in the parent and child RDDs.</div>
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<td class="colFirst"><a href="../../../org/apache/spark/RangePartitioner.html" title="class in org.apache.spark">RangePartitioner</a><K,V></td>
<td class="colLast">
<div class="block">A <a href="../../../org/apache/spark/Partitioner.html" title="class in org.apache.spark"><code>Partitioner</code></a> that partitions sortable records by range into roughly
equal ranges.</div>
</td>
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<tr class="altColor">
<td class="colFirst"><a href="../../../org/apache/spark/Resubmitted.html" title="class in org.apache.spark">Resubmitted</a></td>
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<div class="block">:: DeveloperApi ::
A <code>ShuffleMapTask</code> that completed successfully earlier, but we
lost the executor before the stage completed.</div>
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<td class="colFirst"><a href="../../../org/apache/spark/SerializableWritable.html" title="class in org.apache.spark">SerializableWritable</a><T extends org.apache.hadoop.io.Writable></td>
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<td class="colFirst"><a href="../../../org/apache/spark/ShuffleDependency.html" title="class in org.apache.spark">ShuffleDependency</a><K,V,C></td>
<td class="colLast">
<div class="block">:: DeveloperApi ::
Represents a dependency on the output of a shuffle stage.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../org/apache/spark/SimpleFutureAction.html" title="class in org.apache.spark">SimpleFutureAction</a><T></td>
<td class="colLast">
<div class="block">A <a href="../../../org/apache/spark/FutureAction.html" title="interface in org.apache.spark"><code>FutureAction</code></a> holding the result of an action that triggers a single job.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../org/apache/spark/SparkConf.html" title="class in org.apache.spark">SparkConf</a></td>
<td class="colLast">
<div class="block">Configuration for a Spark application.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../org/apache/spark/SparkContext.html" title="class in org.apache.spark">SparkContext</a></td>
<td class="colLast">
<div class="block">Main entry point for Spark functionality.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../org/apache/spark/SparkContext.DoubleAccumulatorParam$.html" title="class in org.apache.spark">SparkContext.DoubleAccumulatorParam$</a></td>
<td class="colLast"> </td>
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<td class="colFirst"><a href="../../../org/apache/spark/SparkContext.FloatAccumulatorParam$.html" title="class in org.apache.spark">SparkContext.FloatAccumulatorParam$</a></td>
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<td class="colFirst"><a href="../../../org/apache/spark/SparkContext.IntAccumulatorParam$.html" title="class in org.apache.spark">SparkContext.IntAccumulatorParam$</a></td>
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<td class="colFirst"><a href="../../../org/apache/spark/SparkContext.LongAccumulatorParam$.html" title="class in org.apache.spark">SparkContext.LongAccumulatorParam$</a></td>
<td class="colLast"> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../org/apache/spark/SparkEnv.html" title="class in org.apache.spark">SparkEnv</a></td>
<td class="colLast">
<div class="block">:: DeveloperApi ::
Holds all the runtime environment objects for a running Spark instance (either master or worker),
including the serializer, Akka actor system, block manager, map output tracker, etc.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../org/apache/spark/SparkFiles.html" title="class in org.apache.spark">SparkFiles</a></td>
<td class="colLast">
<div class="block">Resolves paths to files added through <code>SparkContext.addFile()</code>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../org/apache/spark/SparkFirehoseListener.html" title="class in org.apache.spark">SparkFirehoseListener</a></td>
<td class="colLast">
<div class="block">Class that allows users to receive all SparkListener events.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../org/apache/spark/SparkJobInfoImpl.html" title="class in org.apache.spark">SparkJobInfoImpl</a></td>
<td class="colLast"> </td>
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<td class="colFirst"><a href="../../../org/apache/spark/SparkStageInfoImpl.html" title="class in org.apache.spark">SparkStageInfoImpl</a></td>
<td class="colLast"> </td>
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<tr class="rowColor">
<td class="colFirst"><a href="../../../org/apache/spark/SparkStatusTracker.html" title="class in org.apache.spark">SparkStatusTracker</a></td>
<td class="colLast">
<div class="block">Low-level status reporting APIs for monitoring job and stage progress.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../org/apache/spark/Success.html" title="class in org.apache.spark">Success</a></td>
<td class="colLast">
<div class="block">:: DeveloperApi ::
Task succeeded.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../org/apache/spark/TaskCommitDenied.html" title="class in org.apache.spark">TaskCommitDenied</a></td>
<td class="colLast">
<div class="block">:: DeveloperApi ::
Task requested the driver to commit, but was denied.</div>
</td>
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<tr class="altColor">
<td class="colFirst"><a href="../../../org/apache/spark/TaskContext.html" title="class in org.apache.spark">TaskContext</a></td>
<td class="colLast">
<div class="block">Contextual information about a task which can be read or mutated during
execution.</div>
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Task was killed intentionally and needs to be rescheduled.</div>
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The task finished successfully, but the result was lost from the executor's block manager before
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We don't know why the task ended -- for example, because of a ClassNotFound exception when
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Exception thrown when a task is explicitly killed (i.e., task failure is expected).</div>
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<h2 title="Package org.apache.spark Description">Package org.apache.spark Description</h2>
<div class="block">Core Spark classes in Scala. A few classes here, such as <a href="../../../org/apache/spark/Accumulator.html" title="class in org.apache.spark"><code>Accumulator</code></a>
and <a href="../../../org/apache/spark/storage/StorageLevel.html" title="class in org.apache.spark.storage"><code>StorageLevel</code></a>, are also used in Java, but the
<code>org.apache.spark.api.java</code> package contains the main Java API.</div>
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