[
https://issues.apache.org/jira/browse/BEAM-9825?focusedWorklogId=433501&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-433501
]
ASF GitHub Bot logged work on BEAM-9825:
----------------------------------------
Author: ASF GitHub Bot
Created on: 15/May/20 03:36
Start Date: 15/May/20 03:36
Worklog Time Spent: 10m
Work Description: lukecwik commented on a change in pull request #11610:
URL: https://github.com/apache/beam/pull/11610#discussion_r425547978
##########
File path:
sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/SetFns.java
##########
@@ -0,0 +1,528 @@
+/*
+ * 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;
+
+import static
org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.List;
+import org.apache.beam.sdk.Pipeline;
+import org.apache.beam.sdk.transforms.join.CoGbkResult;
+import org.apache.beam.sdk.transforms.join.CoGroupByKey;
+import org.apache.beam.sdk.transforms.join.KeyedPCollectionTuple;
+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.TupleTag;
+import
org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Iterables;
+
+public class SetFns {
Review comment:
Your understanding is correct that users will get results based upon
whatever data is fired because of a trigger but from a cursory reading of the
docs, we mention doing intersect/distinct/... over PCollections and not trigger
firings which could confuse a user into thinking that intersect/distinct will
be over all elements in these PCollections.
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Issue Time Tracking
-------------------
Worklog Id: (was: 433501)
Remaining Estimate: 88h 40m (was: 88h 50m)
Time Spent: 7h 20m (was: 7h 10m)
> Transforms for Intersect, IntersectAll, Except, ExceptAll, Union, UnionAll
> --------------------------------------------------------------------------
>
> Key: BEAM-9825
> URL: https://issues.apache.org/jira/browse/BEAM-9825
> Project: Beam
> Issue Type: New Feature
> Components: sdk-java-core
> Reporter: Darshan Jani
> Assignee: Darshan Jani
> Priority: Major
> Original Estimate: 96h
> Time Spent: 7h 20m
> Remaining Estimate: 88h 40m
>
> I'd like to propose following new high-level transforms.
> * Intersect
> Compute the intersection between elements of two PCollection.
> Given _leftCollection_ and _rightCollection_, this transform returns a
> collection containing elements that common to both _leftCollection_ and
> _rightCollection_
>
> * Except
> Compute the difference between elements of two PCollection.
> Given _leftCollection_ and _rightCollection_, this transform returns a
> collection containing elements that are in _leftCollection_ but not in
> _rightCollection_
> * Union
> Find the elements that are either of two PCollection.
> Implement IntersetAll, ExceptAll and UnionAll variants of transforms.
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