Re: Clusters

Stefan Guggisberg-2 wrote:

hi perry

On Fri, May 16, 2008 at 10:31 AM, Perry.yin <perry.yin@gmail.com> wrote:
>
>  Hi,stefan:
>   I got a jackrabbit clustering issue: Content created by one tomcat is not
>  visible for another tomcat. Would you like to give me your configuration as
>  a sample?

i don't have a cluster setup, sorry. you can find more information
about configuring
cluster support here: http://wiki.apache.org/jackrabbit/Clustering

cheers
stefan

>   Thanks in advance!
>
>
>
>  Stefan Guggisberg wrote:
>  >
>  > On Jan 16, 2008 7:33 PM, Connor Brett <ConnorB@axxia.com> wrote:
>  >> I'm embarrassed to say my search problem is solved - I forgot to edit
>  >> the node name in the cluster config!
>  >
>  > no problem, thanks for reporting back! :)
>  >
>  > cheers
>  > stefan
>  >
>  >>
>  >>
>  >> -----Original Message-----
>  >> From: Connor Brett [mailto:ConnorB@AXXIA.com]
>  >> Sent: 16 January 2008 17:01
>  >> To: users@jackrabbit.apache.org
>  >>
>  >> Subject: RE: Clusters
>  >>
>  >> Thanks, that's good news. What Jackrabbit version you are using? I don't
>  >> see anything that stands out in our logs, no errors or warnings anyway.
>  >> I haven't examined the entire log to look for the presense of
>  >> re-indexing on other nodes. Is there anything I should be looking for,
>  >> or any extra configuration I need to do for this to work?
>  >>
>  >> There's no evidence of index corruption - each cluster node can
>  >> successfully find document nodes that _it_ added. We have in the past
>  >> had the need to drop and re-create the indexes. In my test environment I
>  >> started with a brand new repository so all cluster nodes have created
>  >> their own local file system indexes.
>  >>
>  >> Thanks for your help.
>  >> Brett
>  >>
>  >>
>  >> -----Original Message-----
>  >> From: Alessandro Bologna [mailto:alessandro.bologna@gmail.com]
>  >> Sent: 16 January 2008 16:49
>  >> To: users@jackrabbit.apache.org
>  >> Subject: Re: Clusters
>  >>
>  >> Regarding point 2, I can tell you that searching *does* work across
>  >> clusters. When a clustered server adds, deletes or updates a JCR node,
>  >> it writes a record in the journal table and the other servers are
>  >> notified and they update their local lucene indexes. Those indexes need
>  >> not to be on a shared filesystem.
>  >>
>  >> Sometimes we experimented a situation where the local indexes (stored on
>  >> the filesystem, under repository/workspaces/<name>/index) on a server
>  >> may have become corrupted, and that leads to queries returning no nodes.
>  >> In those cases, it was enough to stop the server that fails, delete the
>  >> contents of the index directory, and restart it. Indexes are
>  >> regenerated, and it picks up any new change that has happened while it
>  >> was down.
>  >> Do you see anything weird in your logs?
>  >>
>  >> Alessandro
>  >>
>  >>
>  >>
>  >>
>  >> On Jan 16, 2008 10:17 AM, Connor Brett <ConnorB@axxia.com> wrote:
>  >> > We trying clusters with Jackrabbit 1.3.3, and I have a couple of
>  >> > questions / issues:
>  >> >
>  >> > 1) journal database connection recovery - if / when the database is
>  >> > offline the journal connection is never recovered, and errors are
>  >> > repeatedly logged. Document operations seem to continue - errors are
>  >> > logged but no exceptions are thrown. Nodes in the cluster are
>  >> > presumably out of sync now. Does anyone know if this is recovered
>  >> > cleanly next time the nodes restart or whether this is permanently
>  >> > bad? I don't like even asking the question, but I'm being pressured to
>  >>
>  >> > hold off upgrading to
>  >> > 1.4 at present.
>  >> >
>  >> > 2) searching doesn't seem to work over clusters, eg. add a document in
>  >>
>  >> > NODE-1, search for the document in NODE-1 works, search with the same
>  >> > query in NODE-2 and the document is not found. The lucene indexes seem
>  >>
>  >> > to be in the local file system always, I can't find any other
>  >> > configuration. Is there a way for the clusters to either share the
>  >> > indexes or for JR to update the indexes from the journalled changes?
>  >> > Does 1.4 change this (I didn't see anything in the release notes about
>  >>
>  >> > it)?
>  >> >
>  >> > Thanks
>  >> > Brett
>  >>
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