[ 
https://issues.apache.org/jira/browse/FLINK-15503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17111415#comment-17111415
 ] 

Robert Metzger commented on FLINK-15503:
----------------------------------------

I ran the test 202 in our flink-ci docker container on a alibaba machine, with 
the following results

{code}
[root@iZgw814dze6vb5iq9eabnvZ flink-runtime]# cat times.out | grep "elapsed"
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.433 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.069 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.367 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 14.733 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 13.41 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 12.565 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 14.38 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 13.906 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 14.12 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 12.261 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 12.641 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 13.158 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 14.008 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.782 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.985 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.685 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 12.269 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 12.692 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.602 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.915 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 12.332 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.869 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.786 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 13.162 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 21.447 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.62 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.999 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 12.894 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.655 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.416 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 15.614 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.33 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.651 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.245 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.371 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.515 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.095 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.948 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.311 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.799 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.621 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.784 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.012 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 15.862 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.422 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 20.923 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.633 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.537 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.73 s - 
in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.203 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.847 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.347 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.153 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.628 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.041 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 14.03 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.115 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.636 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.616 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.074 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.688 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.737 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.734 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.694 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.524 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.536 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.439 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.383 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.661 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.641 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.556 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.133 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.246 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.366 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.206 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.608 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.518 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.714 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.846 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.71 s - 
in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.278 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.646 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 14.915 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 14.663 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.969 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 13.282 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.005 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.476 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.307 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.703 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 12.642 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.861 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.48 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.911 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 13.428 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 12.007 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.616 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.936 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.501 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.419 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.613 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.296 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 12.502 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[ERROR] Tests run: 6, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 20.631 
s <<< FAILURE! - in org.apache.flink.runtime.rest.FileUploadHandlerTest
[ERROR] testFileMultipart(org.apache.flink.runtime.rest.FileUploadHandlerTest)  
Time elapsed: 10.758 s  <<< ERROR!
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.86 s - 
in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.137 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.425 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.948 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.875 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.85 s - 
in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.587 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.65 s - 
in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.848 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.989 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.084 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.832 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.259 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.096 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.395 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.853 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.689 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.879 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.666 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.33 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.391 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.842 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.721 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.888 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.962 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.274 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.43 s - 
in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.265 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.598 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.61 s - 
in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.776 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.45 s - 
in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.617 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.796 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.316 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.064 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.149 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.268 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.731 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.517 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.679 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.228 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.263 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.966 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.394 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.023 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.209 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.544 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.235 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.098 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.997 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.363 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.241 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.527 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 18.235 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 11.819 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 13.836 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 13.781 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.474 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.836 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.686 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.167 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.875 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.34 s - 
in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.477 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.146 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.461 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.36 s - 
in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 7.999 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.33 s - 
in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.316 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.71 s - 
in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.212 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.765 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.69 s - 
in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.301 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.667 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.317 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.759 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.562 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.93 s - 
in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.389 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.301 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.309 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.092 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.243 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.244 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.3 s - 
in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.5 s - 
in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 10.951 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.404 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.447 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.593 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.008 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.437 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.567 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.254 s 
- in org.apache.flink.runtime.rest.FileUploadHandlerTest
{code}

As you can see, there was one FAILURE, with the following stacktrace:

{code}
[ERROR] testFileMultipart(org.apache.flink.runtime.rest.FileUploadHandlerTest)  
Time elapsed: 10.758 s  <<< ERROR!
java.net.SocketTimeoutException: timeout
        at okio.Okio$4.newTimeoutException(Okio.java:227)
        at okio.AsyncTimeout.exit(AsyncTimeout.java:284)
        at okio.AsyncTimeout$2.read(AsyncTimeout.java:240)
        at okio.RealBufferedSource.indexOf(RealBufferedSource.java:344)
        at 
okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:216)
        at 
okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:210)
        at 
okhttp3.internal.http1.Http1Codec.readResponseHeaders(Http1Codec.java:189)
        at 
okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:75)
        at 
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
        at 
okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:45)
        at 
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
        at 
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
        at 
okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
        at 
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
        at 
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
        at 
okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
        at 
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
        at 
okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:120)
        at 
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
        at 
okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:185)
        at okhttp3.RealCall.execute(RealCall.java:69)
        at 
org.apache.flink.runtime.rest.FileUploadHandlerTest.testFileMultipart(FileUploadHandlerTest.java:216)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at 
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
        at 
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at 
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
        at 
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
        at 
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
        at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
        at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48)
        at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
        at 
org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:365)
        at 
org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:273)
        at 
org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:238)
        at 
org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:159)
        at 
org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384)
        at 
org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345)
        at 
org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126)
        at 
org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418)
Caused by: java.net.SocketException: Socket closed
        at java.net.SocketInputStream.read(SocketInputStream.java:204)
        at java.net.SocketInputStream.read(SocketInputStream.java:141)
        at okio.Okio$2.read(Okio.java:138)
        at okio.AsyncTimeout$2.read(AsyncTimeout.java:236)
        ... 51 more
{code}

> FileUploadHandlerTest.testMixedMultipart and FileUploadHandlerTest. 
> testUploadCleanupOnUnknownAttribute failed on Azure
> -----------------------------------------------------------------------------------------------------------------------
>
>                 Key: FLINK-15503
>                 URL: https://issues.apache.org/jira/browse/FLINK-15503
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / REST, Tests
>    Affects Versions: 1.10.0
>            Reporter: Till Rohrmann
>            Priority: Critical
>              Labels: test-stability
>             Fix For: 1.10.0
>
>
> The tests {{FileUploadHandlerTest.testMixedMultipart}} and 
> {{FileUploadHandlerTest. testUploadCleanupOnUnknownAttribute}} failed on 
> Azure with 
> {code}
> 2020-01-07T09:32:06.9840445Z [ERROR] 
> testUploadCleanupOnUnknownAttribute(org.apache.flink.runtime.rest.FileUploadHandlerTest)
>   Time elapsed: 12.457 s  <<< ERROR!
> 2020-01-07T09:32:06.9850865Z java.net.SocketTimeoutException: timeout
> 2020-01-07T09:32:06.9851650Z  at 
> org.apache.flink.runtime.rest.FileUploadHandlerTest.testUploadCleanupOnUnknownAttribute(FileUploadHandlerTest.java:234)
> 2020-01-07T09:32:06.9852910Z Caused by: java.net.SocketException: Socket 
> closed
> 2020-01-07T09:32:06.9853465Z  at 
> org.apache.flink.runtime.rest.FileUploadHandlerTest.testUploadCleanupOnUnknownAttribute(FileUploadHandlerTest.java:234)
> 2020-01-07T09:32:06.9853855Z 
> 2020-01-07T09:32:06.9854362Z [ERROR] 
> testMixedMultipart(org.apache.flink.runtime.rest.FileUploadHandlerTest)  Time 
> elapsed: 10.091 s  <<< ERROR!
> 2020-01-07T09:32:06.9855125Z java.net.SocketTimeoutException: Read timed out
> 2020-01-07T09:32:06.9855652Z  at 
> org.apache.flink.runtime.rest.FileUploadHandlerTest.testMixedMultipart(FileUploadHandlerTest.java:154)
> 2020-01-07T09:32:06.9856034Z 
> {code}
> https://dev.azure.com/rmetzger/Flink/_build/results?buildId=4159&view=results



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