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https://issues.apache.org/jira/browse/HADOOP-19256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17924493#comment-17924493
]
ASF GitHub Bot commented on HADOOP-19256:
-----------------------------------------
saikatroy038 commented on code in PR #7329:
URL: https://github.com/apache/hadoop/pull/7329#discussion_r1944539120
##########
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/impl/PutObjectOptions.java:
##########
@@ -39,15 +49,36 @@ public final class PutObjectOptions {
/**
* Constructor.
* @param storageClass Storage class, if not null.
+ * @param conditionalPutEnabled Is this a conditional Put?
* @param headers Headers; may be null.
*/
public PutObjectOptions(
+ final boolean keepMarkers,
Review Comment:
done
##########
hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/impl/ITestS3APutIfMatch.java:
##########
@@ -0,0 +1,150 @@
+/*
+ * 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.hadoop.fs.s3a.impl;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FSDataOutputStream;
+import org.apache.hadoop.fs.FSDataOutputStreamBuilder;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.fs.s3a.performance.AbstractS3ACostTest;
+import org.apache.hadoop.fs.s3a.RemoteFileChangedException;
+import org.apache.hadoop.fs.s3a.S3ATestUtils;
+import org.apache.hadoop.io.IOUtils;
+
+import org.junit.Test;
+import software.amazon.awssdk.services.s3.model.S3Exception;
+
+import java.io.IOException;
+
+import static org.apache.hadoop.fs.contract.ContractTestUtils.dataset;
+import static org.apache.hadoop.fs.s3a.Constants.FAST_UPLOAD_BUFFER_ARRAY;
+import static
org.apache.hadoop.fs.s3a.Constants.FS_S3A_CONDITIONAL_FILE_CREATE;
+import static org.apache.hadoop.fs.s3a.Constants.FS_S3A_CREATE_HEADER;
+import static org.apache.hadoop.fs.s3a.Constants.MIN_MULTIPART_THRESHOLD;
+import static org.apache.hadoop.fs.s3a.Constants.MULTIPART_MIN_SIZE;
+import static org.apache.hadoop.fs.s3a.Constants.MULTIPART_SIZE;
+import static org.apache.hadoop.fs.s3a.S3ATestUtils.skipIfNotEnabled;
+import static
org.apache.hadoop.fs.s3a.S3ATestUtils.removeBaseAndBucketOverrides;
+import static org.apache.hadoop.fs.s3a.impl.AWSHeaders.IF_NONE_MATCH;
+import static
org.apache.hadoop.fs.s3a.impl.InternalConstants.UPLOAD_PART_COUNT_LIMIT;
+import static org.apache.hadoop.fs.s3a.scale.S3AScaleTestBase._1MB;
+import static org.apache.hadoop.test.LambdaTestUtils.intercept;
+
+
+public class ITestS3APutIfMatch extends AbstractS3ACostTest {
+
+ private Configuration conf;
+
+ @Override
+ public Configuration createConfiguration() {
+ Configuration conf = super.createConfiguration();
+ S3ATestUtils.disableFilesystemCaching(conf);
+ removeBaseAndBucketOverrides(
+ conf,
+ MULTIPART_SIZE,
+ UPLOAD_PART_COUNT_LIMIT,
+ MIN_MULTIPART_THRESHOLD);
+ conf.setLong(UPLOAD_PART_COUNT_LIMIT, 2);
+ conf.setLong(MIN_MULTIPART_THRESHOLD, MULTIPART_MIN_SIZE);
+ conf.setInt(MULTIPART_SIZE, MULTIPART_MIN_SIZE);
+ return conf;
+ }
+
+ @Override
+ public void setup() throws Exception {
+ super.setup();
+ conf = createConfiguration();
Review Comment:
done
> S3A: Support S3 Conditional Writes
> ----------------------------------
>
> Key: HADOOP-19256
> URL: https://issues.apache.org/jira/browse/HADOOP-19256
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Reporter: Ahmar Suhail
> Priority: Major
> Labels: pull-request-available
>
> S3 Conditional Write (Put-if-absent) capability is now generally available -
> [https://aws.amazon.com/about-aws/whats-new/2024/08/amazon-s3-conditional-writes/]
>
> S3A should allow passing in this put-if-absent header to prevent over writing
> of files.
> There is a feature branch for this: HADOOP-19256-s3-conditional-writes
> + support etags to allow an overwrite to be restricted to overwriting a
> specific version. This can be done through a createFile option.
> https://docs.aws.amazon.com/AmazonS3/latest/userguide/conditional-writes.html
> Fun fact; third party stores will not reject overwrites if they don't
> recognise the headers, so there's no way to be sure they are supported
> without testing.
> we need a flag to enable/disable conditional writes which can be exposed in a
> hasPathCapability()
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