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| <div class="subTitle">org.apache.beam.runners.spark.stateful</div> |
| <h2 title="Class SparkGroupAlsoByWindowViaWindowSet" class="title">Class SparkGroupAlsoByWindowViaWindowSet</h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
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| <li>org.apache.beam.runners.spark.stateful.SparkGroupAlsoByWindowViaWindowSet</li> |
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| <pre>public class <span class="typeNameLabel">SparkGroupAlsoByWindowViaWindowSet</span> |
| extends java.lang.Object |
| implements java.io.Serializable</pre> |
| <div class="block">An implementation of <code>GroupByKeyViaGroupByKeyOnly.GroupAlsoByWindow</code> logic for grouping by windows and controlling |
| trigger firings and pane accumulation. |
| |
| <p>This implementation is a composite of Spark transformations revolving around state management |
| using Spark's <code>PairDStreamFunctions.updateStateByKey(scala.Function1, |
| org.apache.spark.Partitioner, boolean, scala.reflect.ClassTag)</code> to update state with new data and |
| timers. |
| |
| <p>Using updateStateByKey allows to scan through the entire state visiting not just the updated |
| state (new values for key) but also check if timers are ready to fire. Since updateStateByKey |
| bounds the types of state and output to be the same, a (state, output) tuple is used, filtering |
| the state (and output if no firing) in the following steps.</div> |
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| <dd><a href="../../../../../../serialized-form.html#org.apache.beam.runners.spark.stateful.SparkGroupAlsoByWindowViaWindowSet">Serialized Form</a></dd> |
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| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.StateAndTimers.html" title="class in org.apache.beam.runners.spark.stateful">SparkGroupAlsoByWindowViaWindowSet.StateAndTimers</a></span></code> |
| <div class="block">State and Timers wrapper.</div> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.html#SparkGroupAlsoByWindowViaWindowSet--">SparkGroupAlsoByWindowViaWindowSet</a></span>()</code> </td> |
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| <td class="colFirst"><code>static <K,InputT,W extends <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>><br>org.apache.spark.streaming.api.java.JavaDStream<org.apache.beam.sdk.util.WindowedValue<<a href="../../../../../../org/apache/beam/sdk/values/KV.html" title="class in org.apache.beam.sdk.values">KV</a><K,java.lang.Iterable<InputT>>>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/runners/spark/stateful/SparkGroupAlsoByWindowViaWindowSet.html#groupByKeyAndWindow-org.apache.spark.streaming.api.java.JavaDStream-org.apache.beam.sdk.coders.Coder-org.apache.beam.sdk.coders.Coder-org.apache.beam.sdk.values.WindowingStrategy-org.apache.beam.runners.core.construction.SerializablePipelineOptions-java.util.List-java.lang.String-">groupByKeyAndWindow</a></span>(org.apache.spark.streaming.api.java.JavaDStream<org.apache.beam.sdk.util.WindowedValue<<a href="../../../../../../org/apache/beam/sdk/values/KV.html" title="class in org.apache.beam.sdk.values">KV</a><K,InputT>>> inputDStream, |
| <a href="../../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><K> keyCoder, |
| <a href="../../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><org.apache.beam.sdk.util.WindowedValue<InputT>> wvCoder, |
| <a href="../../../../../../org/apache/beam/sdk/values/WindowingStrategy.html" title="class in org.apache.beam.sdk.values">WindowingStrategy</a><?,W> windowingStrategy, |
| org.apache.beam.runners.core.construction.SerializablePipelineOptions options, |
| java.util.List<java.lang.Integer> sourceIds, |
| java.lang.String transformFullName)</code> </td> |
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| <h4>SparkGroupAlsoByWindowViaWindowSet</h4> |
| <pre>public SparkGroupAlsoByWindowViaWindowSet()</pre> |
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| <h4>groupByKeyAndWindow</h4> |
| <pre>public static <K,InputT,W extends <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>> org.apache.spark.streaming.api.java.JavaDStream<org.apache.beam.sdk.util.WindowedValue<<a href="../../../../../../org/apache/beam/sdk/values/KV.html" title="class in org.apache.beam.sdk.values">KV</a><K,java.lang.Iterable<InputT>>>> groupByKeyAndWindow(org.apache.spark.streaming.api.java.JavaDStream<org.apache.beam.sdk.util.WindowedValue<<a href="../../../../../../org/apache/beam/sdk/values/KV.html" title="class in org.apache.beam.sdk.values">KV</a><K,InputT>>> inputDStream, |
| <a href="../../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><K> keyCoder, |
| <a href="../../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><org.apache.beam.sdk.util.WindowedValue<InputT>> wvCoder, |
| <a href="../../../../../../org/apache/beam/sdk/values/WindowingStrategy.html" title="class in org.apache.beam.sdk.values">WindowingStrategy</a><?,W> windowingStrategy, |
| org.apache.beam.runners.core.construction.SerializablePipelineOptions options, |
| java.util.List<java.lang.Integer> sourceIds, |
| java.lang.String transformFullName)</pre> |
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