liutang123 opened a new pull request, #56081:
URL: https://github.com/apache/doris/pull/56081

   ### What problem does this PR solve?
   
   Issue Number: close #xxx
   
   Related PR: #xxx
   
   Problem Summary:
   When calling `S3ClientFactory::getClientConfiguration`, it may cost too much 
long time.
   ```
   E20250916 00:43:33.577644 3174497 aws_logger.h:50] [CurlHttpClient] Curl 
returned error code 28 - Timeout was reached
   E20250916 00:43:33.577708 3174497 aws_logger.h:50] [EC2MetadataClient] Http 
request to retrieve credentials failed
   W20250916 00:43:33.577716 3174497 aws_logger.h:53] [EC2MetadataClient] 
Request failed, now waiting 0 ms before attempting again.
   E20250916 00:43:34.577911 3174497 aws_logger.h:50] [CurlHttpClient] Curl 
returned error code 28 - Timeout was reached
   E20250916 00:43:34.577973 3174497 aws_logger.h:50] [EC2MetadataClient] Http 
request to retrieve credentials failed
   E20250916 00:43:34.577984 3174497 aws_logger.h:50] [EC2MetadataClient] Can 
not retrieve resource from http://169.254.169.254/latest/api/token
   E20250916 00:43:35.578131 3174497 aws_logger.h:50] [CurlHttpClient] Curl 
returned error code 28 - Timeout was reached
   E20250916 00:43:35.578181 3174497 aws_logger.h:50] [EC2MetadataClient] Http 
request to retrieve credentials failed
   W20250916 00:43:35.578188 3174497 aws_logger.h:53] [EC2MetadataClient] 
Request failed, now waiting 0 ms before attempting again.
   E20250916 00:43:36.578377 3174497 aws_logger.h:50] [CurlHttpClient] Curl 
returned error code 28 - Timeout was reached
   E20250916 00:43:36.578429 3174497 aws_logger.h:50] [EC2MetadataClient] Http 
request to retrieve credentials failed
   E20250916 00:43:36.578439 3174497 aws_logger.h:50] [EC2MetadataClient] Can 
not retrieve resource from 
http://169.254.169.254/latest/meta-data/iam/security-credentials
   E20250916 00:43:37.578578 3174497 aws_logger.h:50] [CurlHttpClient] Curl 
returned error code 28 - Timeout was reached
   E20250916 00:43:37.578635 3174497 aws_logger.h:50] [EC2MetadataClient] Http 
request to retrieve credentials failed
   W20250916 00:43:37.578644 3174497 aws_logger.h:53] [EC2MetadataClient] 
Request failed, now waiting 0 ms before attempting again.
   E20250916 00:43:38.578836 3174497 aws_logger.h:50] [CurlHttpClient] Curl 
returned error code 28 - Timeout was reached
   E20250916 00:43:38.578886 3174497 aws_logger.h:50] [EC2MetadataClient] Http 
request to retrieve credentials failed
   E20250916 00:43:38.578897 3174497 aws_logger.h:50] [EC2MetadataClient] Can 
not retrieve resource from 
http://169.254.169.254/latest/meta-data/placement/availability-zone
   ```
   In this PR, Exec `getClientConfiguration` in `ExecEnv::_init`.
   In the same time, fix the but where `OpenTime` of 
`RESULT_FILE_SINK_OPERATOR` is always 0.
   
   ### Release note
   
   None
   
   ### Check List (For Author)
   
   - Test <!-- At least one of them must be included. -->
       - [ ] Regression test
       - [ ] Unit Test
       - [ ] Manual test (add detailed scripts or steps below)
       - [ ] No need to test or manual test. Explain why:
           - [ ] This is a refactor/code format and no logic has been changed.
           - [ ] Previous test can cover this change.
           - [ ] No code files have been changed.
           - [ ] Other reason <!-- Add your reason?  -->
   
   - Behavior changed:
       - [ ] No.
       - [ ] Yes. <!-- Explain the behavior change -->
   
   - Does this need documentation?
       - [ ] No.
       - [ ] Yes. <!-- Add document PR link here. eg: 
https://github.com/apache/doris-website/pull/1214 -->
   
   ### Check List (For Reviewer who merge this PR)
   
   - [ ] Confirm the release note
   - [ ] Confirm test cases
   - [ ] Confirm document
   - [ ] Add branch pick label <!-- Add branch pick label that this PR should 
merge into -->
   
   


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