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https://issues.apache.org/jira/browse/HADOOP-13502?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15544304#comment-15544304
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Chris Nauroth commented on HADOOP-13502:
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bq. Can we keep is-blobstore purely as a high level flag in those *.xml files?
It sounds like you'd like to see is-blobstore kept as a purely descriptive
flag. I can see the appeal of that, but unfortunately, I think it would
conflict with what I tried to achieve for backward compatibility in the 001
patch.
Some of the tests were changed to check the new flags, but also continue
checking the is-blobstore flag as a fallback. This helps for backward
compatibility if there is a file system implementation outside of the Hadoop
source tree that has subclassed {{AbstractContractCreateTest}} to run those
contract tests in its own project. If we keep is-blobstore in the XML files,
then I also need to remove the fallbacks check from the code, because I want
WASB and S3A to run the tests with the stricter checks enforced.
Overall, I'd prefer to stick with the approach in the 001 patch, but let me
know your thoughts.
> Rename/split fs.contract.is-blobstore flag used by contract tests.
> ------------------------------------------------------------------
>
> Key: HADOOP-13502
> URL: https://issues.apache.org/jira/browse/HADOOP-13502
> Project: Hadoop Common
> Issue Type: Improvement
> Components: test
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Priority: Minor
> Attachments: HADOOP-13502-branch-2.001.patch
>
>
> The {{fs.contract.is-blobstore}} flag guards against execution of several
> contract tests to account for known limitations with blob stores. However,
> the name is not entirely accurate, because it's still possible that a file
> system implemented against a blob store could pass those tests, depending on
> whether or not the implementation matches the semantics of HDFS. This issue
> proposes to rename the flag or split it into different flags with different
> definitions for the semantics covered by the current flag.
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