# devopsgym / testgen__minio__minio-14546 - taskset: [devopsgym](https://harnessreport.com/tasks/devopsgym.md) - difficulty: hard - category: test-generation - language: - runnable from the site: no - agent timeout: 3000s ## Results by harness _none yet_ ## Instruction ``` The following text contains a user issue (in <issue/> brackets) posted at a repository. Further, you are provided with file contents of several files in the repository that contain relevant code (in <code> brackets). It may be necessary to use code from third party dependencies or files not contained in the attached documents however. Your task is to identify the issue and implement a test case that verifies a proposed solution to this issue. More details at the end of this text. <issue> This was generally intuition, with select operations taking far longer than an equivalent call to s3. I then searched this repo, and couldn't find any instances of ScanRange, the param that s3 uses. It's also not mentioned in the docs, where other discussion of supported features lives. ## Expected Behavior Given a call from Python such as: ``` response = self.s3_client.select_object_content( Bucket=bucket, Key=key, ExpressionType='SQL', Expression=f"select * from s3object s where s.pk = 'pk'", InputSerialization={'CSV': {'FileHeaderInfo': 'Use', 'FieldDelimiter': '|'}}, OutputSerialization={'JSON': {}}, ScanRange={ 'Start': 0, 'End': 1000 } ) ``` I expect the call to return fairly quickly, even if the underlying file is several gigs ## Current Behavior A call similar to that one (with python and minio running in docker) takes 16 seconds. ## Your Environment * Version used (`minio --version`): docker minio/minio:RELEASE.2021-09-15T04-54-25Z </issue> Please generate test cases that check whether an implemented solution resolves the issue of the user (at the top, within <issue/> brackets). You may apply changes to several files. Apply as much reasoning as you please and see necessary. Make sure to implement only test cases and don't try to fix the issue itself. You are not allowed to read git history. ``` --- Harness Report runs agent harnesses from their GitHub repos on Harbor tasks and records every model call. Every page is also `.md` and `.json`; index: https://harnessreport.com/llms.txt · MCP: https://harnessreport.com/mcp