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https://issues.apache.org/jira/browse/HDFS-11294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16410477#comment-16410477
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Hudson commented on HDFS-11294:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #13869 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/13869/])
HDFS-11294: libhdfs++: Segfault in HA failover if DNS lookup for both
(james.clampffer: rev 48db24a430f5911a564d08f9ae927aaa9d81cd50)
* (edit)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/bindings/c/hdfs.cc
* (edit)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/rpc/namenode_tracker.h
* (add)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/tests/hdfs_config_connect_bugs.cc
* (edit)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/tests/rpc_engine_test.cc
* (edit)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/rpc/rpc_engine.cc
* (edit)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/tests/CMakeLists.txt
* (edit)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/include/hdfspp/events.h
* (edit)
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/rpc/namenode_tracker.cc
> libhdfs++: Segfault in HA failover if DNS lookup for both Namenodes fails
> -------------------------------------------------------------------------
>
> Key: HDFS-11294
> URL: https://issues.apache.org/jira/browse/HDFS-11294
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
> Reporter: James Clampffer
> Assignee: James Clampffer
> Priority: Major
> Attachments: HDFS-11294.HDFS-8707.001.patch,
> HDFS-11294.HDFS-8707.002.patch, HDFS-8707.HDFS-11294.000.patch
>
>
> Hit while doing more manual testing on HDFS-11028.
> The HANamenodeTracker takes an asio endpoint to figure out what endpoint on
> the other node to try next during a failover. This is done by passing the
> element at index 0 from endpoints (a std::vector<asio endpoint>).
> When DNS fails the endpoints vector for that node will be empty so the
> iterator returned by endpoints\[0\] is just a null pointer that gets
> dereferenced and causes a segfault.
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