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https://issues.apache.org/jira/browse/HDFS-12134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16107875#comment-16107875
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Hadoop QA commented on HDFS-12134:
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| {color:red}-1{color} | {color:red} docker {color} | {color:red} 9m
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|| Subsystem || Report/Notes ||
| JIRA Issue | HDFS-12134 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12879689/HDFS-12134.HDFS-8707.002.patch
|
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/20504/console |
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This message was automatically generated.
> libhdfs++: Add a synchronization interface for the GSSAPI
> ---------------------------------------------------------
>
> Key: HDFS-12134
> URL: https://issues.apache.org/jira/browse/HDFS-12134
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
> Reporter: James Clampffer
> Assignee: James Clampffer
> Attachments: HDFS-12134.HDFS-8707.000.patch,
> HDFS-12134.HDFS-8707.001.patch, HDFS-12134.HDFS-8707.002.patch
>
>
> Bits of the GSSAPI that Cyrus Sasl uses aren't thread safe. There needs to
> be a way for a client application to share a lock with this library in order
> to prevent race conditions. It can be done using event callbacks through the
> C API but we can provide something more robust (RAII) in the C++ API.
> Proposed client supplied lock, pretty much the C++17 lockable concept. Use a
> default if one isn't provided. This would be scoped at the process level
> since it's unlikely that multiple instances of libgssapi unless someone puts
> some effort in with dlopen/dlsym.
> {code}
> class LockProvider
> {
> virtual ~LockProvider() {}
> // allow client application to deny access to the lock
> virtual bool try_lock() = 0;
> virtual void unlock() = 0;
> }
> {code}
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