[
https://issues.apache.org/jira/browse/HDFS-16665?focusedWorklogId=791774&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-791774
]
ASF GitHub Bot logged work on HDFS-16665:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 17/Jul/22 16:50
Start Date: 17/Jul/22 16:50
Worklog Time Spent: 10m
Work Description: GauthamBanasandra opened a new pull request, #4573:
URL: https://github.com/apache/hadoop/pull/4573
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### Description of PR
The library target `hdfspp_test_shim_static` is built using the following
sources, which causes duplicate symbols to be defined -
1. hdfs_shim.c
2. ${LIBHDFSPP_BINDING_C}/hdfs.cc
https://github.com/apache/hadoop/blob/8774f178686487007dcf8c418c989b785a529000/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/tests/CMakeLists.txt#L153
And fails the compilation -
```
H:\hadoop-hdfs-project\hadoop-hdfs-native-client\src\out\build\x64-Debug\hdfspp_test_shim_static.lib(hdfs_shim.obj)
: error LNK2005: hdfsAllowSnapshot already defined in
hdfspp_test_shim_static.lib(hdfs.obj)
H:\hadoop-hdfs-project\hadoop-hdfs-native-client\src\out\build\x64-Debug\hdfspp_test_shim_static.lib(hdfs_shim.obj)
: error LNK2005: hdfsAvailable already defined in
hdfspp_test_shim_static.lib(hdfs.obj)
H:\hadoop-hdfs-project\hadoop-hdfs-native-client\src\out\build\x64-Debug\hdfspp_test_shim_static.lib(hdfs_shim.obj)
: error LNK2005: hdfsBuilderConfSetStr already defined in
hdfspp_test_shim_static.lib(hdfs.obj)
H:\hadoop-hdfs-project\hadoop-hdfs-native-client\src\out\build\x64-Debug\hdfspp_test_shim_static.lib(hdfs_shim.obj)
: error LNK2005: hdfsBuilderConnect already defined in
hdfspp_test_shim_static.lib(hdfs.obj)
Duplicate symbols defined by hdfs_shim.c -
https://github.com/apache/hadoop/blob/440f4c2b28515d2007b81ac00b549bbf14fa9f64/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/tests/hdfs_shim.c#L583-L585.
```
Adding the source `${LIBHDFSPP_BINDING_C}/hdfs.cc` is redundant here since
this file is transitively included in `hdfs_shim.c` through
`libhdfspp_wrapper.h` -
https://github.com/apache/hadoop/blob/440f4c2b28515d2007b81ac00b549bbf14fa9f64/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/tests/hdfs_shim.c#L20
Thus, we need to exclude `${LIBHDFSPP_BINDING_C}/hdfs.cc` to fix this issue.
### How was this patch tested?
1. Tested this locally by building on my Windows system.
2. Hadoop Jenkins CI validation.
### For code changes:
- [x] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
- [ ] Object storage: have the integration tests been executed and the
endpoint declared according to the connector-specific documentation?
- [ ] If adding new dependencies to the code, are these dependencies
licensed in a way that is compatible for inclusion under [ASF
2.0](http://www.apache.org/legal/resolved.html#category-a)?
- [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`,
`NOTICE-binary` files?
Issue Time Tracking
-------------------
Worklog Id: (was: 791774)
Remaining Estimate: 0h
Time Spent: 10m
> Fix duplicate sources for hdfspp_test_shim_static
> -------------------------------------------------
>
> Key: HDFS-16665
> URL: https://issues.apache.org/jira/browse/HDFS-16665
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: libhdfs++
> Affects Versions: 3.4.0
> Environment: Windows 10
> Reporter: Gautham Banasandra
> Assignee: Gautham Banasandra
> Priority: Critical
> Labels: libhdfscpp
> Attachments: hdfs_shim duplicate symbols.log
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The library target *hdfspp_test_shim_static* is built using the following
> sources, which causes duplicate symbols to be defined -
> 1. hdfs_shim.c
> 2. ${LIBHDFSPP_BINDING_C}/hdfs.cc
> https://github.com/apache/hadoop/blob/8774f178686487007dcf8c418c989b785a529000/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/tests/CMakeLists.txt#L153
> And fails the compilation -
> {code}
> H:\hadoop-hdfs-project\hadoop-hdfs-native-client\src\out\build\x64-Debug\hdfspp_test_shim_static.lib(hdfs_shim.obj)
> : error LNK2005: hdfsAllowSnapshot already defined in
> hdfspp_test_shim_static.lib(hdfs.obj)
> H:\hadoop-hdfs-project\hadoop-hdfs-native-client\src\out\build\x64-Debug\hdfspp_test_shim_static.lib(hdfs_shim.obj)
> : error LNK2005: hdfsAvailable already defined in
> hdfspp_test_shim_static.lib(hdfs.obj)
> H:\hadoop-hdfs-project\hadoop-hdfs-native-client\src\out\build\x64-Debug\hdfspp_test_shim_static.lib(hdfs_shim.obj)
> : error LNK2005: hdfsBuilderConfSetStr already defined in
> hdfspp_test_shim_static.lib(hdfs.obj)
> H:\hadoop-hdfs-project\hadoop-hdfs-native-client\src\out\build\x64-Debug\hdfspp_test_shim_static.lib(hdfs_shim.obj)
> : error LNK2005: hdfsBuilderConnect already defined in
> hdfspp_test_shim_static.lib(hdfs.obj)
> {code}
> Duplicate symbols defined by hdfs_shim.c -
> https://github.com/apache/hadoop/blob/440f4c2b28515d2007b81ac00b549bbf14fa9f64/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/tests/hdfs_shim.c#L583-L585.
> Adding the source *${LIBHDFSPP_BINDING_C}/hdfs.cc* is redundant here since
> this file is transitively included in hdfs_shim.c through
> *libhdfspp_wrapper.h* -
> https://github.com/apache/hadoop/blob/440f4c2b28515d2007b81ac00b549bbf14fa9f64/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/tests/hdfs_shim.c#L20.
> Thus, we need to exclude *${LIBHDFSPP_BINDING_C}/hdfs.cc* to fix this issue.
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