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From "James Clampffer (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-11388) libhdfs++: Add an alternative to assert()
Date Fri, 03 Feb 2017 18:34:53 GMT
James Clampffer created HDFS-11388:

             Summary: libhdfs++: Add an alternative to assert()
                 Key: HDFS-11388
                 URL: https://issues.apache.org/jira/browse/HDFS-11388
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: James Clampffer
            Priority: Minor

There's a few places we use C's assert, in a lot of applications it would be better to switch
to something that doesn't necessarily call abort() right away.

Example would be a large program that uses temp files or is responsible for freeing shared
memory used for IPC.  Aborting the process will clean up resources private to the process
but leave other sorts of resources hanging around.  If assert is replaced by a different macro
it could throw or signal to indicate that it's no longer safe to use the library but give
the rest of the application a chance to clean up unrelated resources.

I'd also be nice to have a variant that wasn't compiled out on release builds for inexpensive
checks.  There have been issues in the past where even -O2 optimized release builds were able
to collapse templates/inline/devirtualize things such that code that looked like it had been
working started acting weird (was relying on UB) and catching that with existing checks would
be valuable.

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