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When downoading from sharepoint with buffer size always getting maximum 8K buffer and not as we asked

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#2,269 8 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
38/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
java
Domain
api

Research direction

Start at the graphServiceClient.drives().byDriveId(...).content().get() call and inspect how the returned Java InputStream handles read(byte[]) for SharePoint downloads. Compare the observed 8K reads with the Java InputStream contract and the SDK's stream implementation; done means the requested buffering behavior is either corrected or clearly covered by a regression test.

Written by the indexing model from the issue text.

Description

Needs: Attention :wave: type:question
Describe the bug

When downloading file from sharepoint using graph api and set the buffer size to be downloaded only 8K ( maximum) is fetched ) instread of the given buffer size.
InputStream inputStream = graphServiceClient.drives().byDriveId(driveId).items().byDriveItemId(getDriveItemIdFromRootPath(filePath)).content().get();
byte[] buf = new byte[cloudPartSizeWhenDownloadingToLocal];
int bytesRead;
while ((bytesRead = srcInputStream.read(buf)) != -1) {
byresRead is always maximum 8K and not per demand
}

Expected behavior

The bytess returned from this method should aline with the request.

How to reproduce

see above

SDK Version

6.25.1

Latest version known to work for scenario above?

No response

Known Workarounds

No response

Debug output
Click to expand log ```
</details>


### Configuration

_No response_

### Other information

_No response_
Dominant language
Java
Stars
444
Forks
154
Avg merge
18h 28m
Merged PRs (30d)
4

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