In fact, there are two S3FileSystemFactory classes, one for Hadoop and another one for Presto. In both cases an external file system class is wrapped in Flink's HadoopFileSystem class [1] [2].
Best, Fabian [1] https://github.com/apache/flink/blob/master/flink-filesystems/flink-s3-fs-hadoop/src/main/java/org/apache/flink/fs/s3hadoop/S3FileSystemFactory.java#L132 [2] https://github.com/apache/flink/blob/master/flink-filesystems/flink-s3-fs-presto/src/main/java/org/apache/flink/fs/s3presto/S3FileSystemFactory.java#L131 2018-01-18 1:24 GMT+01:00 cw7k <c...@yahoo.com.invalid>: > Thanks. I'm looking at the s3 example and I can only find the > S3FileSystemFactory but not the File System implementation (subclass > of org.apache.flink.core.fs.FileSystem). > Is that requirement still needed? On Wednesday, January 17, 2018, > 3:59:47 PM PST, Fabian Hueske <fhue...@gmail.com> wrote: > > Hi, > > please have a look at this doc page [1]. > It describes how to add new file system implementations and also how to > configure them. > > Best, Fabian > > [1] > https://ci.apache.org/projects/flink/flink-docs- > release-1.4/ops/filesystems.html#adding-new-file-system-implementations > > 2018-01-18 0:32 GMT+01:00 cw7k <c...@yahoo.com.invalid>: > > > Hi, I'm adding support for more cloud storage providers such as Google > > (gcs://) and Oracle (oci://). > > I have an oci:// test working based on the s3a:// test but when I try it > > on an actual Flink job like WordCount, I get this message: > > "org.apache.flink.core.fs.UnsupportedFileSystemSchemeException: Could > not > > find a file system implementation for scheme 'oci'. The scheme is not > > directly supported by Flink and no Hadoop file system to support this > > scheme could be loaded." > > How do I register new schemes into the file system factory? Thanks. > On > > Tuesday, January 16, 2018, 5:27:31 PM PST, cw7k <c...@yahoo.com.INVALID> > > wrote: > > > > Hi, question on this page: > > "You need to point Flink to a valid Hadoop configuration..."https://ci. > > apache.org/projects/flink/flink-docs-release-1.4/ops/ > > deployment/aws.html#s3-simple-storage-service > > How do you point Flink to the Hadoop config? > > On Saturday, January 13, 2018, 4:56:15 AM PST, Till Rohrmann < > > trohrm...@apache.org> wrote: > > > > Hi, > > > > the flink-connector-filesystem contains the BucketingSink which is a > > connector with which you can write your data to a file system. It > provides > > exactly once processing guarantees and allows to write data to different > > buckets [1]. > > > > The flink-filesystem module contains different file system > implementations > > (like mapr fs, hdfs or s3). If you want to use, for example, s3 file > > system, then there is the flink-s3-fs-hadoop and flink-s3-fs-presto > module. > > > > So if you want to write your data to s3 using the BucketingSink, then you > > have to add flink-connector-filesystem for the BucketingSink as well as a > > s3 file system implementations (e.g. flink-s3-fs-hadoop or > > flink-s3-fs-presto). > > > > Usually, there should be no need to change Flink's filesystem > > implementations. If you want to add a new connector, then this would go > to > > flink-connectors or to Apache Bahir [2]. > > > > [1] > > https://ci.apache.org/projects/flink/flink-docs-master/dev/connectors/ > > filesystem_sink.html > > > > [2] > > https://ci.apache.org/projects/flink/flink-docs- > > master/dev/connectors/index.html#connectors-in-apache-bahir > > > > Cheers, > > Till > > > > On Fri, Jan 12, 2018 at 7:22 PM, cw7k <c...@yahoo.com.invalid> wrote: > > > > > Hi, I'm trying to understand the difference between the > flink-filesystem > > > and flink-connector-filesystem. How is each intended to be used? > > > If adding support for a different storage provider that supports HDFS, > > > should additions be made to one or the other, or both? Thanks. > > > >
