Dear hackers,
Cluster.pm defines a function slot()which requires a slot_name as a key
and returns attributes of the given slot, as a hash-ref. ISTM, the hash
does not contain 'slot_name'.
However, I found that some codes access it by using a key 'slot_name'. ISTM it always
becomes 'undef' thus any tests are meaningless.
It looks like that existing codes want to check the existing of given logical slots.
So, it is enough to search with key 'plugin'. The valid value is set if exists, otherwise ''.
How do you think?
Best regards,
Hayato Kuroda
FUJITSU LIMITED