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Posted to github@beam.apache.org by GitBox <gi...@apache.org> on 2021/12/13 11:23:58 UTC
[GitHub] [beam] mosche opened a new pull request #16205: [BEAM-13445] Correctly set data limit when flushing S3 upload buffer
mosche opened a new pull request #16205:
URL: https://github.com/apache/beam/pull/16205
This bug surfaced when adding integration tests for the S3FileSystem. Localstack rejected the `uploadPart` request because the MD5 content hash did not match. This is due to all the additional `\x00` visible in the logs below. Without these the content hash matches. See details here https://github.com/localstack/localstack/issues/4987
```
2021-12-08T09:07:41.998:DEBUG:localstack.services.edge: IN(s3): "PUT /bucket/.temp-beam-80964f9c-01a1-421c-950c-7790a04ead45/dea81bd6481b9750-08a8-422d-8c27-ecda870db803?partNumber=1&uploadId=iYYXz61AHHdLdEMIAo7BCFjJBUK0IFk5hxAHzPbwhDw9U9bq2mNuK1bsA" - headers: {'Remote-Addr': '172.17.0.1', 'Host': '127.0.0.1:55313', 'Amz-Sdk-Invocation-Id': '634475e5-0ded-f7d4-eb57-1deab8542962', 'Amz-Sdk-Request': 'attempt=1; max=4', 'Authorization': 'AWS4-HMAC-SHA256 Credential=accessKey/20211208/us-east-1/s3/aws4_request, SignedHeaders=amz-sdk-invocation-id;amz-sdk-request;content-length;content-md5;content-type;host;x-amz-content-sha256;x-amz-date;x-amz-decoded-content-length, Signature=7d5914152405f6efd6f788bfd6b4eb64ff8f08f0d7ce0248ab43588c30ad138e', 'Content-Md5': 'c4L6InIVKBVDagtl8ZjN7g==', 'Content-Type': 'application/octet-stream', 'User-Agent': 'aws-sdk-java/2.17.77 Mac_OS_X/10.16 OpenJDK_64-Bit_Server_VM/25.312-b07 Java/1.8.0_312 scala/2.12.11 vendor/Azul_Systems__Inc. io/sync http/Ap
ache cfg/retry-mode/legacy', 'X-Amz-Content-Sha256': 'STREAMING-AWS4-HMAC-SHA256-PAYLOAD', 'X-Amz-Date': '20211208T090741Z', 'X-Amz-Decoded-Content-Length': '9', 'Content-Length': '181', 'Connection': 'Keep-Alive', 'Expect': '100-continue', 'X-Forwarded-For': '172.17.0.1, 127.0.0.1:55313', 'x-localstack-edge': 'http://127.0.0.1:55313'}
data: b'20000;chunk-signature=9ee43c083afa21ac7494ac18064b8fbddc03c129635408c02ec63fd493b52865\r\nTestval1\n\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
2021-12-08T09:07:42.000:DEBUG:localstack.services.edge: OUT(s3): "PUT /bucket/.temp-beam-80964f9c-01a1-421c-950c-7790a04ead45/dea81bd6481b9750-08a8-422d-8c27-ecda870db803?partNumber=1&uploadId=iYYXz61AHHdLdEMIAo7BCFjJBUK0IFk5hxAHzPbwhDw9U9bq2mNuK1bsA" - status: 400 - response headers: {'Content-Type': 'application/xml', 'Location': '/bucket', 'Last-Modified': 'Wed, 08 Dec 2021 09:07:42 GMT', 'x-amz-request-id': 'D1275DF1603A6B53', 'x-amz-id-2': 'MzRISOwyjmnupD1275DF1603A6B537/JypPGXLh0OVFGcJaaO3KW/hRAqKOpIEEp', 'Content-Length': '156'} - response: <?xml version="1.0" encoding="utf-8"?>
<Error><Code>BadDigest</Code><Message>The Content-MD5 you specified did not match what we received.</Message></Error>
```
It looks like AWS is a lot more tolerant here and simply ignores any data beyond the provided content-length.
In any case, we shouldn't be sending this. Also, interestingly, on AWS SDK v1 the client correctly truncates the data.
Additionally this reduces the memory footprint and improves performance of the S3 byte channel by avoiding reading the source buffer into an intermediate temporary array before writing to the upload buffer. If the underlying source buffer array is accessible, it is used for the optimal performance. Otherwise the implementation uses a safe alternative based on a read only copy buffer.
------------------------
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[GitHub] [beam] mosche commented on pull request #16205: [BEAM-13445] Correctly set data limit when flushing S3 upload buffer
Posted by GitBox <gi...@apache.org>.
mosche commented on pull request #16205:
URL: https://github.com/apache/beam/pull/16205#issuecomment-992367590
R: @aromanenko-dev
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[GitHub] [beam] aromanenko-dev commented on a change in pull request #16205: [BEAM-13445] Correctly set data limit when flushing S3 upload buffer
Posted by GitBox <gi...@apache.org>.
aromanenko-dev commented on a change in pull request #16205:
URL: https://github.com/apache/beam/pull/16205#discussion_r767750483
##########
File path: sdks/java/io/amazon-web-services/src/main/java/org/apache/beam/sdk/io/aws/s3/S3WritableByteChannel.java
##########
@@ -118,13 +118,22 @@ public int write(ByteBuffer sourceBuffer) throws IOException {
int totalBytesWritten = 0;
while (sourceBuffer.hasRemaining()) {
+ int position = sourceBuffer.position();
int bytesWritten = Math.min(sourceBuffer.remaining(), uploadBuffer.remaining());
totalBytesWritten += bytesWritten;
- byte[] copyBuffer = new byte[bytesWritten];
- sourceBuffer.get(copyBuffer);
- uploadBuffer.put(copyBuffer);
- md5.update(copyBuffer);
+ if (sourceBuffer.hasArray()) {
Review comment:
Could you add a Javadoc for this method about this to make it more evident why it's needed?
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[GitHub] [beam] aromanenko-dev merged pull request #16205: [BEAM-13445] Correctly set data limit when flushing S3 upload buffer
Posted by GitBox <gi...@apache.org>.
aromanenko-dev merged pull request #16205:
URL: https://github.com/apache/beam/pull/16205
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[GitHub] [beam] mosche commented on a change in pull request #16205: [BEAM-13445] Correctly set data limit when flushing S3 upload buffer
Posted by GitBox <gi...@apache.org>.
mosche commented on a change in pull request #16205:
URL: https://github.com/apache/beam/pull/16205#discussion_r767783742
##########
File path: sdks/java/io/amazon-web-services/src/main/java/org/apache/beam/sdk/io/aws/s3/S3WritableByteChannel.java
##########
@@ -118,13 +118,22 @@ public int write(ByteBuffer sourceBuffer) throws IOException {
int totalBytesWritten = 0;
while (sourceBuffer.hasRemaining()) {
+ int position = sourceBuffer.position();
int bytesWritten = Math.min(sourceBuffer.remaining(), uploadBuffer.remaining());
totalBytesWritten += bytesWritten;
- byte[] copyBuffer = new byte[bytesWritten];
- sourceBuffer.get(copyBuffer);
- uploadBuffer.put(copyBuffer);
- md5.update(copyBuffer);
+ if (sourceBuffer.hasArray()) {
Review comment:
@aromanenko-dev I added some comments to explain. Is that sufficient?
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