[GitHub] [hadoop] steveloughran opened a new pull request #824: HADOOP-16085: S3Guard versioning: get ITestS3ARemoteFileChanged to work consistently

[GitBox <gi...@apache.org>]

steveloughran opened a new pull request #824: HADOOP-16085: S3Guard versioning: get ITestS3ARemoteFileChanged to work consistently
URL: https://github.com/apache/hadoop/pull/824
 
 
   HADOOP-16085: S3Guard versioning: get ITestS3ARemoteFileChanged to work consistently
   
   * clear auth mode flag from FS config, so there is a metastore check before rename(file), ensuring that the values passed to the mock are consistent everywhere
   * change error in ChangeDetectionPolicy to make clear when an error is coming on the client for a getObjectMetadata call even when the copy policy is "server"
   * and fix up ITestS3ARemoteFileChanged to use the constant string defined in ChangeDetectionPolicy precisely to stop tests being brittle against changes in the text.
   * new tests in ITestS3ARemoteFileChanged to not lose stack traces when examining causes/inner causes of exceptions, just to throw new assertions with nested causes.
   * deleted a couple of unused imports
   * moved from two spaces after a "." to one. Sorry.

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