Curator/Zookeeper lock cleanup -


i’m using interprocesssemaphoremutex distributed locking recipe.

a typical path lock might be

/lock/calendar/uuid

where uuid of course uuid , hence many lock paths may generated.

i’d assume these paths need cleaned eventually, i’ve tried using childreaper , reaper after unlock lock.

childreaper kind of works. if add /lock/calendar/uuid happily removes children. log shows removes leases , locks , node shown gone in zkclient begins complaining in seemingly endless loop path gone. despite trying mode.delete , mode.until gone.

reaper nothing, because /lock/calendar/uuid has children.

am missing something? not need clean these locks? need worry concurrency wise about.

the steps has follows reaper.

  1. create reaper (specify threshold time. default 5 minutes)
  2. start reaper
  3. add path
  4. thread.wait(//time more threshold)
  5. close reaper

if check zookeeper now, node deleted.

note: work leaf node when path empty.

p.s: child reaper doesn't work me. if can put steps used child reaper in comment or in question, helpful.


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