Hi George,
Thank you for getting back to me.
I am using Solr 6.
I need to use coreContainer because I have created a CoreAdminHandler
extension.
Thanks,
Fabrizio
On Sun, Sep 11, 2016 at 6:42 PM, Georg Sorst <georg.so...@gmail.com> wrote:
> Hi Fabrizio,
>
> which Solr version are you using? In more recent versions (starting with 5
> I think) you should not use the coreContainer directly but instead go
> through the HTTP API (which also supports the swap operation) or use SolrJ.
>
> Best,
> Georg
>
> Fabrizio Fortino <ffort...@gilt.com> schrieb am Mo., 29. Aug. 2016 11:53:
>
> > I have a NON-Cloud Solr and I am trying to use the swap functionality to
> > push an updated core into production without downtime.
> >
> > Here are the steps I am executing
> > 1. Solr is up and running with a single core (name = 'livecore')
> > 2. I create a new core with the latest version of my documents (name =
> > 'newcore')
> > 3. I swap the cores -> coreContainer.swap("newcore", "livecore")
> > 4. I try to unload "newcore" (that points to the old one) and remove all
> > the related dirs -> coreContainer.unload("newcore", true, true, true)
> >
> > The first three operations are OK. But when I try to execute the last one
> > the Solr log starts printing the following messages forever
> >
> > 61424 INFO (pool-1-thread-1) [ x:newcore] o.a.s.c.SolrCore Core newcore
> is
> > not yet closed, waiting 100 ms before checking again.
> >
> > I have opened an issue on this problem (
> > https://issues.apache.org/jira/browse/SOLR-8757) but I have not received
> > any answer yet.
> >
> > In the meantime I have found the following workaround: I try to manually
> > close all the core references before unloading it. Here is the code:
> >
> > SolrCore core = coreContainer.create("newcore", coreProps)
> > coreContainer.swap("newcore", "livecore")
> > // the old livecore is now newcore, so unload it and remove all the
> > related dirsSolrCore oldCore = coreContainer.getCore("newCore")while
> > (oldCore.getOpenCount > 1) {
> > oldCore.close()
> > }
> > coreContainer.unload("newcore", true, true, true)
> >
> >
> > This seemed to work but there is some race conditions and from time to
> time
> > I get a ConcurrentModificationException and then an abnormal CPU
> > consumption.
> >
> > I filed a separate issue on this
> > https://issues.apache.org/jira/browse/SOLR-9208 but this is not
> considered
> > an issue by the Solr committers. The suggestion is to move and discuss it
> > here in the mailing list.
> >
> > If this is not an issue, what are the steps to swap to cores and unload
> one
> > of them?
> >
> > Thanks a lot,
> > Fabrizio
> >
>
