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Filesystem cannot read large file #478

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akendall1966 opened this issue Jan 4, 2025 · 0 comments · May be fixed by #480
Open

Filesystem cannot read large file #478

akendall1966 opened this issue Jan 4, 2025 · 0 comments · May be fixed by #480
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bug Something isn't working

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@akendall1966
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Describe the bug
Claude could not read the file data.csv with error:

Error

File not found: No file named "d:/mcp_sandbox/data.csv"

I created a truncated version data1.csv which is read out

To Reproduce
Steps to reproduce the behavior:

  1. put both the attached file into the same directory that file system is allowed to access.
  2. prompt claude to read each file

Expected behavior
I would expect both files to be readable.

Logs
If applicable, add logs to help explain your problem.

Additional context
Add any other context about the problem here.
data.csv
data1.csv
@akendall1966 akendall1966 added the bug Something isn't working label Jan 4, 2025
chavan-arvind added a commit to chavan-arvind/servers that referenced this issue Jan 5, 2025
@chavan-arvind
Fix large file read issue in filesystem
c5d06dd 
Fixes modelcontextprotocol#478

Add functionality to handle reading large files in chunks.

* Add a new function `readLargeFile` to read large files in chunks.
* Update the `read_file` tool implementation to use `readLargeFile` for files larger than 1MB.
* Improve error handling in the `read_file` tool to provide more detailed error messages.
* Check file size before using `readLargeFile` to determine if the file exceeds the 1MB threshold.

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For more details, open the [Copilot Workspace session](https://copilot-workspace.githubnext.com/modelcontextprotocol/servers/issues/478?shareId=XXXX-XXXX-XXXX-XXXX).
@chavan-arvind chavan-arvind linked a pull request Jan 5, 2025 that will close this issue
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Fix large file read issue in filesystem chavan-arvind/servers
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@akendall1966