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From Joel Bernstein <joels...@gmail.com>
Subject Re: Parallel SQL Interface returns "java.lang.NullPointerException" after reloading collection
Date Tue, 03 May 2016 14:01:00 GMT
I'll look into this today.

Joel Bernstein
http://joelsolr.blogspot.com/

On Tue, May 3, 2016 at 9:22 AM, Kevin Risden <risdenk@avalonconsult.com>
wrote:

> What I think is happening is that since the CloudSolrClient is from the
> SolrCache and the collection was reloaded. zkStateReader is actually null
> since there was no cloudSolrClient.connect() call after the reload. I think
> that would cause the NPE on anything that uses the zkStateReader like
> getClusterState().
>
> ZkStateReader zkStateReader = cloudSolrClient.getZkStateReader();
> ClusterState clusterState = zkStateReader.getClusterState();
>
>
> Kevin Risden
> Apache Lucene/Solr Committer
> Hadoop and Search Tech Lead | Avalon Consulting, LLC
> <http://www.avalonconsult.com/>
> M: 732 213 8417
> LinkedIn <http://www.linkedin.com/company/avalon-consulting-llc> | Google+
> <http://www.google.com/+AvalonConsultingLLC> | Twitter
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>
>
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> On Mon, May 2, 2016 at 9:58 PM, Joel Bernstein <joelsolr@gmail.com> wrote:
>
> > Looks like the loop below is throwing a Null pointer. I suspect the
> > collection has not yet come back online. In theory this should be self
> > healing and when the collection comes back online it should start working
> > again. If not then that would be a bug.
> >
> > for(String col : clusterState.getCollections()) {
> >
> >
> > Joel Bernstein
> > http://joelsolr.blogspot.com/
> >
> > On Mon, May 2, 2016 at 10:06 PM, Ryan Yacyshyn <ryan.yacyshyn@gmail.com>
> > wrote:
> >
> > > Yes stack trace can be found here:
> > >
> > > http://pastie.org/10821638
> > >
> > >
> > >
> > > On Mon, 2 May 2016 at 01:05 Joel Bernstein <joelsolr@gmail.com> wrote:
> > >
> > > > Can you post your stack trace? I suspect this has to do with how the
> > > > Streaming API is interacting with SolrCloud. We can probably also
> > create
> > > a
> > > > jira ticket for this.
> > > >
> > > > Joel Bernstein
> > > > http://joelsolr.blogspot.com/
> > > >
> > > > On Sun, May 1, 2016 at 4:02 AM, Ryan Yacyshyn <
> ryan.yacyshyn@gmail.com
> > >
> > > > wrote:
> > > >
> > > > > Hi all,
> > > > >
> > > > > I'm exploring with parallel SQL queries and found something strange
> > > after
> > > > > reloading the collection: the same query will return a
> > > > > java.lang.NullPointerException error. Here are my steps on a fresh
> > > > install
> > > > > of Solr 6.0.0.
> > > > >
> > > > > *Start Solr in cloud mode with example*
> > > > > bin/solr -e cloud -noprompt
> > > > >
> > > > > *Index some data*
> > > > > bin/post -c gettingstarted example/exampledocs/*.xml
> > > > >
> > > > > *Send query, which works*
> > > > > curl --data-urlencode 'stmt=select id,name from gettingstarted
> where
> > > > > inStock = true limit 2'
> > http://localhost:8983/solr/gettingstarted/sql
> > > > >
> > > > > *Reload the collection*
> > > > > curl '
> > > > >
> > > > >
> > > >
> > >
> >
> http://localhost:8983/solr/admin/collections?action=RELOAD&name=gettingstarted
> > > > > '
> > > > >
> > > > > After reloading, running the exact query above will return the null
> > > > pointer
> > > > > exception error. Any idea why?
> > > > >
> > > > > If I stop all Solr severs and restart, then it's fine.
> > > > >
> > > > > *java -version*
> > > > > java version "1.8.0_25"
> > > > > Java(TM) SE Runtime Environment (build 1.8.0_25-b17)
> > > > > Java HotSpot(TM) 64-Bit Server VM (build 25.25-b02, mixed mode)
> > > > >
> > > > > Thanks,
> > > > > Ryan
> > > > >
> > > >
> > >
> >
>

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