Gautham Banasandra created HDFS-16467:
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Summary: Ensure Protobuf generated headers are included first
Key: HDFS-16467
URL: https://issues.apache.org/jira/browse/HDFS-16467
Project: Hadoop HDFS
Issue Type: Improvement
Components: libhdfs++
Affects Versions: 3.4.0
Environment: Windows 10
Reporter: Gautham Banasandra
Assignee: Gautham Banasandra
We need to ensure that the Protobuf generated headers ([such as
ClientNamenodeProtocol.pb.h|https://github.com/apache/hadoop/blob/cce5a6f6094cefd2e23b73d202cc173cf4fc2cc5/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/connection/datanodeconnection.h#L23])
are included at the top. In other words, *.ph.h should be the first header
files to be included in any of the .c/.cc/.h files. Otherwise, it causes symbol
redefinition errors during compilation. Also, we need to ensure that Protobuf
generated header files are the first ones to be included even in the case of
transitive inclusion of header files.
This issue seems to be specific to Windows only. Not sure why the other
platforms aren't running into this.
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