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Posted to issues@flink.apache.org by "Aljoscha Krettek (JIRA)" <ji...@apache.org> on 2017/10/13 09:47:00 UTC
[jira] [Updated] (FLINK-4228) YARN artefact upload does not work
with S3AFileSystem
[ https://issues.apache.org/jira/browse/FLINK-4228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Aljoscha Krettek updated FLINK-4228:
------------------------------------
Summary: YARN artefact upload does not work with S3AFileSystem (was: RocksDB semi-async snapshot to S3AFileSystem fails)
> YARN artefact upload does not work with S3AFileSystem
> -----------------------------------------------------
>
> Key: FLINK-4228
> URL: https://issues.apache.org/jira/browse/FLINK-4228
> Project: Flink
> Issue Type: Bug
> Components: State Backends, Checkpointing
> Reporter: Ufuk Celebi
> Priority: Blocker
> Fix For: 1.4.0
>
>
> Using the {{RocksDBStateBackend}} with semi-async snapshots (current default) leads to an Exception when uploading the snapshot to S3 when using the {{S3AFileSystem}}.
> {code}
> AsynchronousException{com.amazonaws.AmazonClientException: Unable to calculate MD5 hash: /var/folders/_c/5tc5q5q55qjcjtqwlwvwd1m00000gn/T/flink-io-5640e9f1-3ea4-4a0f-b4d9-3ce9fbd98d8a/7c6e745df2dddc6eb70def1240779e44/StreamFlatMap_3_0/dummy_state/47daaf2a-150c-4208-aa4b-409927e9e5b7/local-chk-2886 (Is a directory)}
> at org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointThread.run(StreamTask.java:870)
> Caused by: com.amazonaws.AmazonClientException: Unable to calculate MD5 hash: /var/folders/_c/5tc5q5q55qjcjtqwlwvwd1m00000gn/T/flink-io-5640e9f1-3ea4-4a0f-b4d9-3ce9fbd98d8a/7c6e745df2dddc6eb70def1240779e44/StreamFlatMap_3_0/dummy_state/47daaf2a-150c-4208-aa4b-409927e9e5b7/local-chk-2886 (Is a directory)
> at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:1298)
> at com.amazonaws.services.s3.transfer.internal.UploadCallable.uploadInOneChunk(UploadCallable.java:108)
> at com.amazonaws.services.s3.transfer.internal.UploadCallable.call(UploadCallable.java:100)
> at com.amazonaws.services.s3.transfer.internal.UploadMonitor.upload(UploadMonitor.java:192)
> at com.amazonaws.services.s3.transfer.internal.UploadMonitor.call(UploadMonitor.java:150)
> at com.amazonaws.services.s3.transfer.internal.UploadMonitor.call(UploadMonitor.java:50)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.io.FileNotFoundException: /var/folders/_c/5tc5q5q55qjcjtqwlwvwd1m00000gn/T/flink-io-5640e9f1-3ea4-4a0f-b4d9-3ce9fbd98d8a/7c6e745df2dddc6eb70def1240779e44/StreamFlatMap_3_0/dummy_state/47daaf2a-150c-4208-aa4b-409927e9e5b7/local-chk-2886 (Is a directory)
> at java.io.FileInputStream.open0(Native Method)
> at java.io.FileInputStream.open(FileInputStream.java:195)
> at java.io.FileInputStream.<init>(FileInputStream.java:138)
> at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:1294)
> ... 9 more
> {code}
> Running with S3NFileSystem, the error does not occur. The problem might be due to {{HDFSCopyToLocal}} assuming that sub-folders are going to be created automatically. We might need to manually create folders and copy only actual files for {{S3AFileSystem}}. More investigation is required.
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