Yes. Normal exists should be handled. What Yonik is worried about is
abnormal situations. Unfortunately, after you remove the semi-orderly
shutdowns, you are left with a lot of residual cases where the timeout is
the most reliable metric that the node has failed.
On Thu, Feb 4, 2010 at 3:04 PM,
Ah, excellent idea, won't always work but may help. I think in this case
(ephemerals) all Yonik would need to do is close the session. That will
remove all ephemerals.
Patrick
kishore g wrote:
Worst case option would be to have jvm shutdownhooks
http://stackoverflow.com/questions/40376/handle
Worst case option would be to have jvm shutdownhooks
http://stackoverflow.com/questions/40376/handle-signals-in-the-java-virtual-machine
You can delete the znodes on exit. More like deleteOnExit functionality of a
File
thanks,
Kishore G
On Thu, Feb 4, 2010 at 2:56 PM, Patrick Hunt wrote:
> h
hah, you guys beat me to the punch. I think having some unique per
client token might also work (see my resp). Perhaps this is the ip of
the host or better (esp if multiple clients on a single host) would be
some solr specific id that uniquely identifies each node.
Patrick
Benjamin Reed wrote
Yonik Seeley wrote:
We have solr nodes create ephemeral znodes (name based on host and port).
The ephemeral znode takes some time to remove of course, so what
happens is that if I bounce a solr server (containing a zk client) the
ephemeral node will still exist when the server comes back up. Si
i second ted's proposals! thanx ted.
there is one other option. when you create the ZooKeeper object you can
pass a session id and password. your bounced server can actually
reattach to the session. (that is why we put that constructor in.) to
use it you need to save the session id and passwor
On Thu, Feb 4, 2010 at 2:20 PM, Yonik Seeley wrote:
> There's no way to "hand over" responsibility for an ephemeral znode, right?
>
Right.
> We have solr nodes create ephemeral znodes (name based on host and port).
> The ephemeral znode takes some time to remove of course, so what
> happens is
