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https://issues.apache.org/jira/browse/BEAM-6707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16777286#comment-16777286
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Charles Chen commented on BEAM-6707:
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Hi Wei, reading through the code links you sent, it looks like the only case I
see where it will return without exception is if there are no source files in
the rename call (or if the caller indicates to IGNORE_MISSING_FILES). Do you
see any other case?
> TextIO.Write appear success but request not sent to Google Cloud Storage
> ------------------------------------------------------------------------
>
> Key: BEAM-6707
> URL: https://issues.apache.org/jira/browse/BEAM-6707
> Project: Beam
> Issue Type: Bug
> Components: io-java-gcp
> Affects Versions: 2.8.0
> Environment: Google Cloud Dataflow and Google Cloud Storage
> Reporter: Wei Cheng A
> Priority: Major
>
> Google Cloud Dataflow is being used to run Apache Beam job.
> from the Dataflow log, the file operation appear to be success.
> Will copy temporary file FileResult{tempFilename=gs://xxxxxx, shard=0,
> window=org.apache.beam.sdk.transforms.windowing.GlobalWindow@xxxxx,
> paneInfo=PaneInfo{isFirst=true, isLast=true, timing=ON_TIME, index=0,
> onTimeIndex=0}} to final location gs://xxxx/20190211.csv
> But when I checked GCS and its log, there was no put or post request during
> that time.
> This issue happened intermittently. The file is copied successfully
> sometimes, after retry.
> I have checked the relevant Beam source code
> https://github.com/apache/beam/blob/c96b096b77c324b886ab94aebcf320976002c0d4/sdks/java/core/src/main/java/org/apache/beam/sdk/io/FileBasedSink.java#L763
> and
> https://github.com/apache/beam/blob/c96b096b77c324b886ab94aebcf320976002c0d4/sdks/java/core/src/main/java/org/apache/beam/sdk/io/FileSystems.java#L304
> seems like in rename() method, there are multiple conditions that the method
> would return without Exception and appear as "success" in log.
> Is there any bug in these Beam methods or I should check for error in my code?
> {code:java}
> TextIO.write().withoutSharding().to(options.getOutFilePath()));
> {code}
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