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https://issues.apache.org/jira/browse/BEAM-11066?focusedWorklogId=501205&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-501205
]
ASF GitHub Bot logged work on BEAM-11066:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 15/Oct/20 17:52
Start Date: 15/Oct/20 17:52
Worklog Time Spent: 10m
Work Description: y1chi commented on a change in pull request #13114:
URL: https://github.com/apache/beam/pull/13114#discussion_r505730965
##########
File path: examples/java/src/main/java/org/apache/beam/examples/WordCount.java
##########
@@ -180,8 +181,11 @@ static void runWordCount(WordCountOptions options) {
p.apply("ReadLines", TextIO.read().from(options.getInputFile()))
.apply(new CountWords())
.apply(MapElements.via(new FormatAsTextFn()))
- .apply("WriteCounts", TextIO.write().to(options.getOutput()));
-
+ .apply(
+ "WriteCounts",
+ options.as(StreamingOptions.class).isStreaming()
Review comment:
looks like the StreamingShardedWriteFactory overwrites the WriteFiles
transform(which incorporates Create.Values() that should be overwritten by
StreamingFnApiCreateOverrideFactory, I've tested reordering of the overrides
and it seems to solve the problem.
it seems hard in general to keep the ordering always correct if we only
replace all transforms in one run but I guess the Factories that overwrites
into a composite transform should be added first.
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Issue Time Tracking
-------------------
Worklog Id: (was: 501205)
Time Spent: 40m (was: 0.5h)
> DataflowRunner crashes during graph rewrites of Java wordcount example with
> beam_fn_api experiment
> --------------------------------------------------------------------------------------------------
>
> Key: BEAM-11066
> URL: https://issues.apache.org/jira/browse/BEAM-11066
> Project: Beam
> Issue Type: Bug
> Components: runner-dataflow
> Reporter: Yichi Zhang
> Priority: P2
> Time Spent: 40m
> Remaining Estimate: 0h
>
> Looks like the TextIO.write() is not properly writing windowed output in
> streaming mode.
>
> {{Exception in thread "main" java.lang.IllegalStateException: Found nodes
> that matched overrides. Matches:
> \{Node{fullName=WriteCounts/WriteFiles/GatherTempFileResults/Reify.ReifyViewInGlobalWindow/Create.Values}=[PTransformOverride\{matcher=EqualClassPTransformMatcher{class=class
> org.apache.beam.sdk.transforms.Create$Values},
> overrideFactory=org.apache.beam.runners.dataflow.DataflowRunner$StreamingFnApiCreateOverrideFactory@62923ee6}]}
> at
> org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions.checkState(Preconditions.java:588)
> at
> org.apache.beam.sdk.Pipeline$1.leaveCompositeTransform(Pipeline.java:237)
> at
> org.apache.beam.sdk.runners.TransformHierarchy$Node.visit(TransformHierarchy.java:661)
> at
> org.apache.beam.sdk.runners.TransformHierarchy$Node.access$600(TransformHierarchy.java:317)
> at
> org.apache.beam.sdk.runners.TransformHierarchy.visit(TransformHierarchy.java:251)
> at org.apache.beam.sdk.Pipeline.traverseTopologically(Pipeline.java:463)
> at org.apache.beam.sdk.Pipeline.checkNoMoreMatches(Pipeline.java:218)
> at org.apache.beam.sdk.Pipeline.replaceAll(Pipeline.java:214)
> at
> org.apache.beam.runners.dataflow.DataflowRunner.replaceTransforms(DataflowRunner.java:1180)
> at
> org.apache.beam.runners.dataflow.DataflowRunner.run(DataflowRunner.java:871)
> at
> org.apache.beam.runners.dataflow.DataflowRunner.run(DataflowRunner.java:192)
> at org.apache.beam.sdk.Pipeline.run(Pipeline.java:317)
> at org.apache.beam.sdk.Pipeline.run(Pipeline.java:303)
> at org.apache.beam.examples.WordCount.runWordCount(WordCount.java:185)
> at org.apache.beam.examples.WordCount.main(WordCount.java:192)}}
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