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https://issues.apache.org/jira/browse/HADOOP-11638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14343533#comment-14343533
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Colin Patrick McCabe commented on HADOOP-11638:
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bq. I don't quite understand the code here: do you really need gettid() here or
it can be replaced with pthread_self()?
{{pthread_self}} returns an opaque identifier. On many platforms, this is not
a {{long}}. Since the {{pthreads_thread_id}} function requires a {{long}},
{{pthread_self}} will not do. The fix is going to have to be
platform-specific. I don't know what it would be for OpenBSD but maybe someone
here does.
> Linux-specific gettid() used in OpensslSecureRandom.c
> -----------------------------------------------------
>
> Key: HADOOP-11638
> URL: https://issues.apache.org/jira/browse/HADOOP-11638
> Project: Hadoop Common
> Issue Type: Bug
> Components: native
> Affects Versions: 2.6.0
> Reporter: Dmitry Sivachenko
>
> In OpensslSecureRandom.c you use Linux-specific syscall gettid():
> static unsigned long pthreads_thread_id(void)
> {
> return (unsigned long)syscall(SYS_gettid);
> }
> Man page says:
> gettid() is Linux-specific and should not be used in programs that are
> intended to be portable.
> This breaks hadoop-2.6.0 compilation on FreeBSD (may be on other OSes too).
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