[HTCondor-users] possible change to DAGMAN_ALWAYS_RUN_POST default

["R. Kent Wenger" <wenger@xxxxxxxxxxx>]

Dear HTCondor users:

We are planning to change the default value for the DAGMAN_ALWAYS_RUN_POST
configuration macro back to False at some point in the 8.5 series.  (This
would mean that a DAG node's POST script will no longer be run if the PRE 
script fails.)

We now feel that this will provide behavior that is more intuitive than 
the current default value of True, which means that a POST script is run 
even if the PRE script fails.  (Note that if the PRE script fails, the 
actual HTCondor job associated with the node is *not* run.)  One concern 
is that, if a POST script is not checking the PRE script return value, it 
may be erroneously reporting that a node succeeded, when the node actually 
failed.

DAGMAN_ALWAYS_RUN_POST had originally defaulted to False; the default
was changed to True in 7.7.2.  We would like to know if changing the 
default back to False will cause problems for anyone.

Kent Wenger
CHTC Team