Copy command -

copy "https://.dfs.core.windows.net/azcopy-unit-tests/source-new/*?" "https://.dfs.core.windows.net/azcopy-unit-tests/sink/AzCopy_Gen2Source_WithAccountKey_Gen2Sink_WithAccountKey_1/?" --dry-run --check-length=false --s2s-preserve-access-tier=false --output-type=json --recursive=true

The output used to be like below in 10.26.0

{"TimeStamp":"2025-01-21T12:37:15.1896011+05:30","MessageType":"Info","MessageContent":"INFO: Scanning...","PromptDetails":{"PromptType":"","ResponseOptions":null,"PromptTarget":""}}
{"TimeStamp":"2025-01-21T12:37:18.317308+05:30","MessageType":"Dryrun","MessageContent":"{"Source":"/folder1","Destination":"/folder1","EntityType":1,"LastModifiedTime":"2024-07-19T05:20:09Z","SourceSize":0,"ContentType":"","ContentEncoding":"","ContentDisposition":"","ContentLanguage":"","CacheControl":"","ContentMD5":null,"Metadata":{"Hdi_isfolder":"true"},"BlobType":"BlockBlob","BlobTier":"","BlobVersionID":"","BlobTags":null,"BlobSnapshotID":""}","PromptDetails":{"PromptType":"","ResponseOptions":null,"PromptTarget":""}}
{"TimeStamp":"2025-01-21T12:37:18.3178145+05:30","MessageType":"Dryrun","MessageContent":"{"Source":"/dataset.csv","Destination":"/dataset.csv","EntityType":0,"LastModifiedTime":"2024-07-19T05:20:22Z","SourceSize":2727,"ContentType":"application/octet-stream","ContentEncoding":"","ContentDisposition":"","ContentLanguage":"","CacheControl":"","ContentMD5":null,"Metadata":null,"BlobType":"BlockBlob","BlobTier":"","BlobVersionID":"","BlobTags":null,"BlobSnapshotID":""}","PromptDetails":{"PromptType":"","ResponseOptions":null,"PromptTarget":""}}

The output now with 10.27.1 looks like below

{"TimeStamp":"2025-01-21T12:33:09.8304079+05:30","MessageType":"Info","MessageContent":"INFO: Scanning...","PromptDetails":{"PromptType":"","ResponseOptions":null,"PromptTarget":""}}
{"TimeStamp":"2025-01-21T12:33:12.9085524+05:30","MessageType":"Dryrun","MessageContent":"{"EntityType":"Folder","BlobType":"BlockBlob","FromTo":"BlobFSBlobFS","Source":"https://REDACTED.dfs.core.windows.net/azcopy-unit-tests/source-new/folder1\",\"Destination\":\"https://REDACTED.dfs.core.windows.net/azcopy-unit-tests/sink/AzCopy_Gen2Source_WithAccountKey_Gen2Sink_WithAccountKey_1/folder1\"}","PromptDetails":{"PromptType":"","ResponseOptions":null,"PromptTarget":""}}
{"TimeStamp":"2025-01-21T12:33:12.9085524+05:30","MessageType":"Dryrun","MessageContent":"{"EntityType":"File","BlobType":"BlockBlob","FromTo":"BlobFSBlobFS","Source":"https://REDACTED.dfs.core.windows.net/azcopy-unit-tests/source-new/dataset.csv\",\"Destination\":\"https://REDACTED.dfs.core.windows.net/azcopy-unit-tests/sink/AzCopy_Gen2Source_WithAccountKey_Gen2Sink_WithAccountKey_1/dataset.csv\"}","PromptDetails":{"PromptType":"","ResponseOptions":null,"PromptTarget":""}}

MessageContent contract is missing fields like SourceSize

If we just diff MessageContent outputs, below is the output for clarity

10.26 version

{
"Source": "/folder1/folder2/folder3/simpledataset.txt",
"Destination": "/folder1/folder2/folder3/simpledataset.txt",
"EntityType": 0,
"LastModifiedTime": "2024-07-19T05:20:19Z",
"SourceSize": 42,
"ContentType": "application/octet-stream",
"ContentEncoding": "",
"ContentDisposition": "",
"ContentLanguage": "",
"CacheControl": "",
"ContentMD5": null,
"Metadata": null,
"BlobType": "BlockBlob",
"BlobTier": "",
"BlobVersionID": "",
"BlobTags": null,
"BlobSnapshotID": ""
}

10.27.1

{
"EntityType": "File",
"BlobType": "BlockBlob",
"FromTo": "BlobFSBlobFS",
"Source": "https://REDACTED.dfs.core.windows.net/azcopy-unit-tests/source-new/dataset.csv",
"Destination": "https://REDACTED.dfs.core.windows.net/azcopy-unit-tests/sink/AzCopy_Gen2Source_WithAccountKey_Gen2Sink_WithAccountKey_1/dataset.csv"
}

We see many fields missing here. Could you please include all the missing fields.

Logs

10.27.1.log
10.27.1-output.txt
10.27.1-scanning.log

10.26-output.txt
10.26-scanning.log
10.26.log