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https://issues.apache.org/jira/browse/HADOOP-10829?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benoy Antony updated HADOOP-10829:
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Attachment: HADOOP-10829.patch
Attaching the patch which synchronizes access to {{serviceLoader}}.
Since there is no change in functionality, no tests are added.
> Iteration on CredentialProviderFactory.serviceLoader is thread-unsafe
> ----------------------------------------------------------------------
>
> Key: HADOOP-10829
> URL: https://issues.apache.org/jira/browse/HADOOP-10829
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Reporter: Benoy Antony
> Assignee: Benoy Antony
> Attachments: HADOOP-10829.patch
>
>
> CredentialProviderFactory uses _ServiceLoader_ framework to load
> _CredentialProviderFactory_
> {code}
> private static final ServiceLoader<CredentialProviderFactory> serviceLoader
> =
> ServiceLoader.load(CredentialProviderFactory.class);
> {code}
> The _ServiceLoader_ framework does lazy initialization of services which
> makes it thread unsafe. If accessed from multiple threads, it is better to
> synchronize the access.
> Similar synchronization has been done while loading compression codec
> providers via HADOOP-8406.
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