[
https://issues.apache.org/jira/browse/BEAM-7386?focusedWorklogId=663820&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-663820
]
ASF GitHub Bot logged work on BEAM-7386:
----------------------------------------
Author: ASF GitHub Bot
Created on: 12/Oct/21 00:12
Start Date: 12/Oct/21 00:12
Worklog Time Spent: 10m
Work Description: laraschmidt commented on a change in pull request
#15275:
URL: https://github.com/apache/beam/pull/15275#discussion_r726669554
##########
File path:
sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/join/EventTimeEquiJoin.java
##########
@@ -0,0 +1,404 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.sdk.transforms.join;
+
+import static
org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions.checkArgument;
+
+import com.google.auto.value.AutoValue;
+import org.apache.beam.sdk.coders.Coder;
+import org.apache.beam.sdk.coders.KvCoder;
+import org.apache.beam.sdk.state.OrderedListState;
+import org.apache.beam.sdk.state.StateSpec;
+import org.apache.beam.sdk.state.StateSpecs;
+import org.apache.beam.sdk.state.TimeDomain;
+import org.apache.beam.sdk.state.Timer;
+import org.apache.beam.sdk.state.TimerMap;
+import org.apache.beam.sdk.state.TimerSpec;
+import org.apache.beam.sdk.state.TimerSpecs;
+import org.apache.beam.sdk.state.ValueState;
+import org.apache.beam.sdk.transforms.DoFn;
+import org.apache.beam.sdk.transforms.Flatten;
+import org.apache.beam.sdk.transforms.PTransform;
+import org.apache.beam.sdk.transforms.ParDo;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.sdk.values.KV;
+import org.apache.beam.sdk.values.PCollection;
+import org.apache.beam.sdk.values.PCollectionList;
+import org.apache.beam.sdk.values.TimestampedValue;
+import
org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.ImmutableList;
+import org.joda.time.Duration;
+import org.joda.time.Instant;
+
+/**
+ * Returns a {@link PTransform} that performs a {@link EventTimeEquiJoin} on
two PCollections. A
+ * {@link EventTimeEquiJoin} joins elements with equal keys bounded by the
difference in event time.
+ * Currently only inner join is supported.
+ *
+ * <p>Example of performing a {@link EventTimeEquiJoin}:
+ *
+ * <pre>{@code
+ * PCollection<KV<K, V1>> pt1 = ...;
+ * PCollection<KV<K, V2>> pt2 = ...;
+ *
+ * PCollection<KV<K, Pair<V1, V2>> eventTimeEquiJoinCollection =
+ * pt1.apply(EventTimeEquiJoin.<K, V1, V2>of(pt2));
+ *
+ * @param <K> the type of the keys in the input {@code PCollection}s
+ * @param <V1> the type of the value in the first {@code PCollection}
+ * @param <V2> the type of the value in the second {@code PCollection}
+ * </pre>
+ */
+@AutoValue
Review comment:
done
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Issue Time Tracking
-------------------
Worklog Id: (was: 663820)
Time Spent: 16h (was: 15h 50m)
> Add Utility BiTemporalStreamJoin
> --------------------------------
>
> Key: BEAM-7386
> URL: https://issues.apache.org/jira/browse/BEAM-7386
> Project: Beam
> Issue Type: Improvement
> Components: sdk-ideas
> Affects Versions: 2.12.0
> Reporter: Reza ardeshir rokni
> Assignee: Lara Schmidt
> Priority: P3
> Time Spent: 16h
> Remaining Estimate: 0h
>
> Add utility class that enables a temporal join between two streams where
> Stream A is matched to Stream B where
> A.timestamp = (max(b.timestamp) where b.timestamp <= a.timestamp)
> This will use the following overall flow:
> KV(key, Timestamped<V>)
> | Window
> | GBK
> | Statefull DoFn
>
>
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