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https://issues.apache.org/jira/browse/HADOOP-14248?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chris Nauroth updated HADOOP-14248:
-----------------------------------
Resolution: Fixed
Hadoop Flags: Incompatible change,Reviewed (was: Incompatible change)
Fix Version/s: 3.0.0-alpha3
Status: Resolved (was: Patch Available)
+1 and committed to both trunk and branch-2. The new JIRA HADOOP-14301 tracks
the branch-2 commit of the deprecation, for inclusion in 2.9.0. I also made
that a sub-task of HADOOP-13204, which is also targeted to 2.9.0. For this
one, I converted to a top-level issue, because it wouldn't make sense for an
issue targeted to 3.0.0-alpha3 to be a sub-task of an issue targeted to 2.9.0.
(If there is an umbrella S3A JIRA targeted to 3.x that I'm not aware of, please
feel free to move it under there.)
Thank you for the patch, [~liuml07].
> Retire SharedInstanceProfileCredentialsProvider in trunk.
> ---------------------------------------------------------
>
> Key: HADOOP-14248
> URL: https://issues.apache.org/jira/browse/HADOOP-14248
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs/s3
> Affects Versions: 3.0.0-alpha3
> Reporter: Mingliang Liu
> Assignee: Mingliang Liu
> Fix For: 3.0.0-alpha3
>
> Attachments: HADOOP-14248.000.patch, HADOOP-14248.001.patch,
> HADOOP-14248-branch-2.001.patch, HADOOP-14248-branch-2.002.patch
>
>
> This is from the discussion in [HADOOP-13050].
> So [HADOOP-13727] added the SharedInstanceProfileCredentialsProvider, which
> effectively reduces high number of connections to EC2 Instance Metadata
> Service caused by InstanceProfileCredentialsProvider. That patch, in order to
> prevent the throttling problem, defined new class
> {{SharedInstanceProfileCredentialsProvider}} as a subclass of
> {{InstanceProfileCredentialsProvider}}, which enforces creation of only a
> single instance.
> Per [HADOOP-13050], we upgraded the AWS Java SDK. Since then, the
> {{InstanceProfileCredentialsProvider}} in SDK code internally enforces a
> singleton. That confirms that our effort in [HADOOP-13727] makes 100% sense.
> Meanwhile, {{SharedInstanceProfileCredentialsProvider}} can retire gracefully
> in trunk branch.
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