Hi Beam community,
I am running into a problem with
“org.apache.beam:beam-runners-flink-1.11:2.25.0” and
“org.apache.beam:beam-runners-flink-1.10:2.25.0”. I am doing some local testing
with the flink runners in embedded mode. The problem is that I cannot save data
into local files using those artifact versions. However when I switched to
“org.apache.beam:beam-runners-flink-1.10:2.24.0”, it worked fine and output
files were saved successfully.
I am basically generating unbounded data in memory using GenerateSequence
transform and saving it into local files. Here is the code that generates
unlimited data in memory:
Pipeline.apply(GenerateSequence.from(0).withRate(1, new Duration(10)))
.apply(Window.into[java.lang.Long](FixedWindows.of(Duration.standardSeconds(1))))
I compared the logs and noticed that there is no write operation found in the
logs with “beam-runners-flink-1.11:2.25.0” and
“beam-runners-flink-1.10:2.25.0”. With the working version
“beam-runners-flink-1.10:2.24.0”, I could find below logs that was obviously
doing the write operation:
[FileIO.Write/WriteFiles/GatherTempFileResults/Reshuffle.ViaRandomKey/Values/Values/Map/ParMultiDo(Anonymous)
->
FileIO.Write/WriteFiles/FinalizeTempFileBundles/Finalize/ParMultiDo(Finalize)
-> FileIO.Write/WriteFiles/FinalizeTempFileBundles/Reshuffle.ViaRandomKey/Pair
with random key/ParMultiDo(AssignShard) (9/12)] INFO
org.apache.beam.sdk.io.WriteFiles - Finalizing 1 file results
[FileIO.Write/WriteFiles/GatherTempFileResults/Reshuffle.ViaRandomKey/Values/Values/Map/ParMultiDo(Anonymous)
->
FileIO.Write/WriteFiles/FinalizeTempFileBundles/Finalize/ParMultiDo(Finalize)
-> FileIO.Write/WriteFiles/FinalizeTempFileBundles/Reshuffle.ViaRandomKey/Pair
with random key/ParMultiDo(AssignShard) (9/12)] INFO
org.apache.beam.sdk.io.FileBasedSink - Will copy temporary file
FileResult{tempFilename=/Users/taol/data/output/.temp-beam-819dbd7c-b9f7-4c8c-9d8b-20091d2eef94/010abb5e-92b0-4e95-a85d-30984e769fe2,
shard=2, window=[2020-11-24T01:33:59.000Z..2020-11-24T01:34:00.000Z),
paneInfo=PaneInfo{isFirst=true, isLast=true, timing=ON_TIME, index=0,
onTimeIndex=0}} to final location
/Users/taol/data/output/output-2020-11-24T01:33:59.000Z-2020-11-24T01:34:00.000Z-00002-of-00010.parquet
[FileIO.Write/WriteFiles/GatherTempFileResults/Reshuffle.ViaRandomKey/Values/Values/Map/ParMultiDo(Anonymous)
->
FileIO.Write/WriteFiles/FinalizeTempFileBundles/Finalize/ParMultiDo(Finalize)
-> FileIO.Write/WriteFiles/FinalizeTempFileBundles/Reshuffle.ViaRandomKey/Pair
with random key/ParMultiDo(AssignShard) (9/12)] INFO
org.apache.beam.sdk.io.FileBasedSink - Will remove known temporary file
/Users/taol/data/output/.temp-beam-819dbd7c-b9f7-4c8c-9d8b-20091d2eef94/010abb5e-92b0-4e95-a85d-30984e769fe2
Is this a known issue with “beam-runners-flink-1.11:2.25.0” and
“beam-runners-flink-1.10:2.25.0”? Can someone please take a look at this issue?
Thanks so much!
