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https://issues.apache.org/jira/browse/BEAM-2939?focusedWorklogId=166580&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-166580
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ASF GitHub Bot logged work on BEAM-2939:
----------------------------------------
Author: ASF GitHub Bot
Created on: 15/Nov/18 18:37
Start Date: 15/Nov/18 18:37
Worklog Time Spent: 10m
Work Description: swegner commented on a change in pull request #6969:
[BEAM-2939] SplittableDoFn Java SDK API Changes
URL: https://github.com/apache/beam/pull/6969#discussion_r233957017
##########
File path:
sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/splittabledofn/Backlog.java
##########
@@ -0,0 +1,78 @@
+/*
+ * 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.splittabledofn;
+
+import com.google.auto.value.AutoValue;
+import java.util.Arrays;
+import javax.annotation.Nullable;
+
+/**
+ * A representation for the amount of known work represented as a backlog.
Review comment:
Can you specify here the scope of a backlog? i.e., does the Backlog specify
the "known work" of..
1. an element+restriction pair?
1. a single input element
1. a bundle application
1. \<something else\>
And does the Backlog explicitly refer to known work that hasn't yet been
completed, or hasn't yet been delivered from the runner, or the total work
including processed and unprocessed ..?
From my understanding, I believe a Backlog represents the unclaimed portion
of an element restriction.
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Issue Time Tracking
-------------------
Worklog Id: (was: 166580)
> Fn API streaming SDF support
> ----------------------------
>
> Key: BEAM-2939
> URL: https://issues.apache.org/jira/browse/BEAM-2939
> Project: Beam
> Issue Type: Improvement
> Components: beam-model
> Reporter: Henning Rohde
> Assignee: Luke Cwik
> Priority: Major
> Labels: portability
> Time Spent: 6h 10m
> Remaining Estimate: 0h
>
> The Fn API should support streaming SDF. Detailed design TBD.
> Once design is ready, expand subtasks similarly to BEAM-2822.
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