Thanks yall,

Yangze,
> I've tried to use MinIO as state backend and everything seems works well
For clarity, I'm using RocksDB state backend with Minio as state storage.
> s3.endpoint: http://localhost:9000
Also, I'm doing everything from docker-compose so localhost isn't going to
work in my case.


Arvid,
> You definitely need to use an http endpoint.
I always receive errors like the following when I use http:
Caused by: java.util.concurrent.CompletionException:
org.apache.flink.core.fs.UnsupportedFileSystemSchemeException: Could not
find a file system implementation for scheme 'http'. The scheme is not
directly supported by Flink and no Hadoop file system to support this
scheme could be loaded. For a full list of supported file systems, please
see https://ci.apache.org/projects/flink/flink-docs-stable/ops/filesystems/.
Whereas s3:// gives me Bad Request errors instead

Thanks


On Wed, Sep 9, 2020 at 8:03 AM Arvid Heise <ar...@ververica.com> wrote:

> Hi Rex,
>
> you could also check the end to end tests that use minio in flink's repo.
> You definitely need to use an http endpoint.
>
> The setup [1] uses also another way to specify the s3.path.style.access
> (with dashes). I think we needed it especially for presto. It seems like
> the settings differ a bit across the implementations, so give it a try. It
> might also be something that we should translate.
> For reference, the actual test using presto can be found here [2].
>
> [1]
> https://github.com/apache/flink/blob/master/flink-end-to-end-tests/test-scripts/common_s3_minio.sh#L115
> [2]
> https://github.com/apache/flink/blob/master/flink-end-to-end-tests/test-scripts/test_batch_wordcount.sh#L64
>
> On Wed, Sep 9, 2020 at 4:17 AM Yangze Guo <karma...@gmail.com> wrote:
>
>> Hi, Rex,
>>
>> I've tried to use MinIO as state backend and everything seems works well.
>> Just sharing my configuration:
>> ```
>> s3.access-key:
>> s3.secret-key:
>> s3.endpoint: http://localhost:9000
>> s3.path.style.access: true
>> state.checkpoints.dir: s3://flink/checkpoints
>> ```
>>
>> I think the problem might be caused by the following reasons:
>> - The MinIO is not well configured.
>> - Maybe you need to create a bucket for it first. In my case, I create
>> a bucket called "flink" first.
>>
>> Best,
>> Yangze Guo
>>
>> On Wed, Sep 9, 2020 at 9:33 AM Rex Fenley <r...@remind101.com> wrote:
>> >
>> > Hello!
>> >
>> > I'm trying to test out Minio as state storage backend using
>> docker-compose on my local machine but keep running into errors that seem
>> strange to me. Any help would be much appreciated :)
>> >
>> > The problem:
>> > With the following environment:
>> >
>> > environment:
>> > - |
>> > FLINK_PROPERTIES=
>> > jobmanager.rpc.address: flink-jobmanager
>> > parallelism.default: 2
>> > s3.access-key: <key>
>> > s3.secret-key: <key>
>> > s3.path.style.access: true
>> >
>> > And the following State Backend (with flink-jdbc-test_graph-minio_1
>> being the container serving minio):
>> >
>> > val bsEnv = StreamExecutionEnvironment.getExecutionEnvironment
>> > bsEnv.setStateBackend(
>> > new RocksDBStateBackend(
>> > "s3://flink-jdbc-test_graph-minio_1/data/checkpoints:9000",
>> > true
>> > )
>> > )
>> >
>> > And submitting the flink job and saving from another docker container
>> like so:
>> >
>> > flink run -m flink-jdbc-test_flink-jobmanager_1:8081 -c <Job Class
>> Name> <built code>.jar
>> >
>> > flink savepoint -m flink-jdbc-test_flink-jobmanager_1:8081 <Job ID>
>> s3://flink-jdbc-test_graph-minio_1:9000/data/savepoints
>> >
>> > I end up with the following error:
>> >
>> > Caused by:
>> com.facebook.presto.hive.s3.PrestoS3FileSystem$UnrecoverableS3OperationException:
>> com.amazonaws.services.s3.model.AmazonS3Exception: Bad Request (Service:
>> Amazon S3; Status Code: 400; Error Code: 400 Bad Request; Request ID:
>> A7E3BB7EEFB524FD; S3 Extended Request ID:
>> cJOtc6E3Kb+U5hgbkA+09Dd/ouDHBGL2ftb1pGHpIwFgd6tE461nkaDtjOj40zbWEpFAcMOEmbY=),
>> S3 Extended Request ID:
>> cJOtc6E3Kb+U5hgbkA+09Dd/ouDHBGL2ftb1pGHpIwFgd6tE461nkaDtjOj40zbWEpFAcMOEmbY=
>> (Path:
>> s3://flink-jdbc-test_graph-minio_1:9000/data/savepoints/savepoint-5c4090-5f90e0cdc603/_metadata)
>> > at
>> com.facebook.presto.hive.s3.PrestoS3FileSystem.lambda$getS3ObjectMetadata$2(PrestoS3FileSystem.java:573)
>> > at com.facebook.presto.hive.RetryDriver.run(RetryDriver.java:138)
>> > at
>> com.facebook.presto.hive.s3.PrestoS3FileSystem.getS3ObjectMetadata(PrestoS3FileSystem.java:560)
>> > at
>> com.facebook.presto.hive.s3.PrestoS3FileSystem.getFileStatus(PrestoS3FileSystem.java:311)
>> > at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:1398)
>> > at
>> com.facebook.presto.hive.s3.PrestoS3FileSystem.create(PrestoS3FileSystem.java:356)
>> > at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:906)
>> > at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:887)
>> > at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:784)
>> > at
>> org.apache.flink.fs.s3presto.common.HadoopFileSystem.create(HadoopFileSystem.java:141)
>> > at
>> org.apache.flink.fs.s3presto.common.HadoopFileSystem.create(HadoopFileSystem.java:37)
>> > at
>> org.apache.flink.core.fs.PluginFileSystemFactory$ClassLoaderFixingFileSystem.create(PluginFileSystemFactory.java:169)
>> > at
>> org.apache.flink.runtime.state.filesystem.FsCheckpointMetadataOutputStream.<init>(FsCheckpointMetadataOutputStream.java:65)
>> > at
>> org.apache.flink.runtime.state.filesystem.FsCheckpointStorageLocation.createMetadataOutputStream(FsCheckpointStorageLocation.java:109)
>> > at
>> org.apache.flink.runtime.checkpoint.PendingCheckpoint.finalizeCheckpoint(PendingCheckpoint.java:306)
>> > ... 10 more
>> > Caused by: com.amazonaws.services.s3.model.AmazonS3Exception: Bad
>> Request (Service: Amazon S3; Status Code: 400; Error Code: 400 Bad Request;
>> Request ID: A7E3BB7EEFB524FD; S3 Extended Request ID:
>> cJOtc6E3Kb+U5hgbkA+09Dd/ouDHBGL2ftb1pGHpIwFgd6tE461nkaDtjOj40zbWEpFAcMOEmbY=)
>> > at
>> com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1799)
>> >
>> > If I add to the environment to include:
>> > ...
>> > s3.endpoint: s3://flink-jdbc-test_graph-minio_1:9000
>> > ...
>> >
>> > Then I end up with the following error just trying to submit the job:
>> > Caused by: java.lang.IllegalArgumentException: Endpoint does not
>> contain a valid host name: s3://flink-jdbc-test_graph-minio_1:9000
>> > at
>> com.amazonaws.AmazonWebServiceClient.computeSignerByURI(AmazonWebServiceClient.java:426)
>> > at
>> com.amazonaws.AmazonWebServiceClient.setEndpoint(AmazonWebServiceClient.java:318)
>> >
>> > Changing s3: to http: like so:
>> > s3.endpoint: http://flink-jdbc-test_graph-minio_1:9000
>> >
>> > Then I receive the same error as before when trying to submit the job:
>> > Caused by: java.lang.IllegalArgumentException: Endpoint does not
>> contain a valid host name: http://flink-jdbc-test_graph-minio_1:9000
>> > at
>> com.amazonaws.AmazonWebServiceClient.computeSignerByURI(AmazonWebServiceClient.java:426)
>> > at
>> com.amazonaws.AmazonWebServiceClient.setEndpoint(AmazonWebServiceClient.java:318)
>> >
>> > However, I can access the minio container via the minio client from
>> docker just fine:
>> > ./mc alias set minio http://flink-jdbc-test_graph-minio_1:9000 key key
>> --api S3v4
>> > But there are no buckets, presumably because saving always fails:
>> > ./mc ls minio
>> > <nothing returned>
>> >
>> > Does anyone know how to resolve this issue?
>> >
>> > Thanks!
>> >
>> > --
>> >
>> > Rex Fenley  |  Software Engineer - Mobile and Backend
>> >
>> >
>> > Remind.com |  BLOG  |  FOLLOW US  |  LIKE US
>>
>
>
> --
>
> Arvid Heise | Senior Java Developer
>
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-- 

Rex Fenley  |  Software Engineer - Mobile and Backend


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