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https://issues.apache.org/jira/browse/HADOOP-11426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14252557#comment-14252557
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Colin Patrick McCabe edited comment on HADOOP-11426 at 12/18/14 11:55 PM:
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I really would prefer not to do this. What's the problem with just installing
the bzip2 development files?
edit: I guess I should go into more detail about the reasons why I wouldn't
like to do this:
* Consistency. For all the other stuff we {{dlopen}}, we search for both the
libraries and the headers. Why should bzip2 behave differently than everything
else?
* "Least surprise" to developers. By searching for the library, we ensure that
developers who successfully create a hadoop build with bzip2 can almost
certainly run it on that same machine.
* Lack of a use-case. Linux distributions usually supply two kinds of
packages: development packges with both the header and the libraries, or
production packages with just the library. As far as I know, nobody supplies
packages with just header files.
let me know if I missed anything or if there's a use-case I forgot!
was (Author: cmccabe):
I really would prefer not to do this. What's the problem with just installing
the bzip2 development files?
> Fix native bzip2 codec build dependency
> ---------------------------------------
>
> Key: HADOOP-11426
> URL: https://issues.apache.org/jira/browse/HADOOP-11426
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Kihwal Lee
> Assignee: Kihwal Lee
> Attachments: HADOOP-11426.patch
>
>
> In hadoop-common-project/hadoop-common/src/CMakeLists.txt, find_package() is
> used to check whether bzip2 libraries and header are present. However, the
> library is loaded by libhadoop using dlopen(), not linked during build, so
> the real build-time dependency is only on the header file.
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