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https://issues.apache.org/jira/browse/HDFS-12134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16410474#comment-16410474
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Hudson commented on HDFS-12134:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #13869 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/13869/])
HDFS-12134: libhdfs++: Add a synchronization interface for the GSSAPI.
(james.clampffer: rev 22ea06a3dd74b80737977908e30ec38a32b968ab)
* (edit)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/include/hdfspp/status.h
* (edit)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/CMakeLists.txt
* (add)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/include/hdfspp/locks.h
* (edit)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/include/hdfspp/hdfspp.h
* (edit)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/rpc/sasl_protocol.cc
* (edit)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/tests/CMakeLists.txt
* (add)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/locks.cc
* (edit)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/tests/uri_test.cc
* (add)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/tests/user_lock_test.cc
* (edit)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/rpc/gsasl_engine.cc
* (edit)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/uri.cc
* (edit)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/rpc/cyrus_sasl_engine.cc
* (edit)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/status.cc
> 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
> Priority: Major
> Attachments: HDFS-12134.HDFS-8707.000.patch,
> HDFS-12134.HDFS-8707.001.patch, HDFS-12134.HDFS-8707.002.patch,
> HDFS-12134.HDFS-8707.003.patch, HDFS-12134.HDFS-8707.004.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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