ramkrish86 commented on code in PR #21508: URL: https://github.com/apache/flink/pull/21508#discussion_r1051961474
########## flink-filesystems/flink-azure-fs-hadoop/src/main/java/org/apache/flink/fs/azurefs/AzureBlobRecoverableWriter.java: ########## @@ -0,0 +1,103 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.flink.fs.azurefs; + +import org.apache.flink.core.fs.RecoverableFsDataOutputStream; +import org.apache.flink.core.io.SimpleVersionedSerializer; +import org.apache.flink.runtime.fs.hdfs.HadoopFsRecoverable; +import org.apache.flink.runtime.fs.hdfs.HadoopRecoverableSerializer; +import org.apache.flink.runtime.fs.hdfs.HadoopRecoverableWriter; + +import org.apache.hadoop.fs.FileSystem; + +import java.io.IOException; + +/** Recoverable writer for AzureBlob file system. */ +public class AzureBlobRecoverableWriter extends HadoopRecoverableWriter { + /** + * Creates a new Recoverable writer. + * + * @param fs The AzureBlob file system on which the writer operates. + */ + public AzureBlobRecoverableWriter(FileSystem fs) { + super(fs); + } + + protected void checkSupportedFSSchemes(org.apache.hadoop.fs.FileSystem fs) { + // This writer is only supported on a subset of file systems + if (!("abfs".equalsIgnoreCase(fs.getScheme()) + || "abfss".equalsIgnoreCase(fs.getScheme()))) { + throw new UnsupportedOperationException( + "Recoverable writers on AzureBlob are only supported for ABFS"); + } + } + + @Override + protected RecoverableFsDataOutputStream getRecoverableFsDataOutputStream( + org.apache.hadoop.fs.Path targetFile, org.apache.hadoop.fs.Path tempFile) + throws IOException { + return new AzureBlobFsRecoverableDataOutputStream(fs, targetFile, tempFile); + } + + @Override + public RecoverableFsDataOutputStream recover(ResumeRecoverable recoverable) throws IOException { + return new AzureBlobFsRecoverableDataOutputStream(fs, (HadoopFsRecoverable) recoverable); + } + + @Override + public boolean requiresCleanupOfRecoverableState() { + return false; + } + + @Override + public boolean cleanupRecoverableState(ResumeRecoverable resumable) throws IOException { + return false; + } + + @Override + public RecoverableFsDataOutputStream.Committer recoverForCommit(CommitRecoverable recoverable) + throws IOException { + return new AzureBlobFsRecoverableDataOutputStream.ABFSCommitter( + fs, (HadoopFsRecoverable) recoverable); + } + + @Override + public SimpleVersionedSerializer<CommitRecoverable> getCommitRecoverableSerializer() { + @SuppressWarnings("unchecked") + SimpleVersionedSerializer<CommitRecoverable> typedSerializer = + (SimpleVersionedSerializer<CommitRecoverable>) + (SimpleVersionedSerializer<?>) HadoopRecoverableSerializer.INSTANCE; + + return typedSerializer; + } + + @Override + public SimpleVersionedSerializer<ResumeRecoverable> getResumeRecoverableSerializer() { + @SuppressWarnings("unchecked") + SimpleVersionedSerializer<ResumeRecoverable> typedSerializer = + (SimpleVersionedSerializer<ResumeRecoverable>) + (SimpleVersionedSerializer<?>) HadoopRecoverableSerializer.INSTANCE; + return typedSerializer; + } + + @Override + public boolean supportsResume() { + return true; + } Review Comment: Got it sure. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
