I think you probably found the problem. The persisting of checkpoints should not use aliases but in theory the aliases could work for the main collection. It may be that the decision was made not to support aliases for the topic stream because the checkpoints for each shard are saved and changing the alias would break the topic. But, I'm not sure that's a good enough reason not to support aliases with the topic if its note that aliases must be stable in the documentation.
Joel Bernstein http://joelsolr.blogspot.com/ On Sat, May 16, 2020 at 11:10 AM Nightingale, Jonathan A (US) < jonathan.nighting...@baesystems.com> wrote: > Joel, > I looked at the commits from that enhancement briefly. It looks like the > work to resolve te slices was put into a central method in CLoudSolrStream. > But to check aliases the Boolean flag needs to be true. > > Everywhere this is used in TopicStream its set to false (3 places). The > first two are for retrieving and persisting the topi checkpoints, bringing > up the question, should aliases be allowed for that collection as well? > > The third is probably what I'm running into. > > protected void constructStreams() throws IOException { > try { > ZkStateReader zkStateReader = cloudSolrClient.getZkStateReader(); > Slice[] slices = CloudSolrStream.getSlices(this.collection, > zkStateReader, false); > > Anyways, this was my 5 minute investigation. I haven't taken the effort to > try and change it. Do you think this could be it? > > Jonathan > -----Original Message----- > From: Joel Bernstein <joels...@gmail.com> > Sent: Thursday, May 14, 2020 6:32 PM > To: solr-user@lucene.apache.org > Subject: Re: using aliases in topic stream > > *** WARNING *** > EXTERNAL EMAIL -- This message originates from outside our organization. > > > This is where the alias work was done: > > https://issues.apache.org/jira/browse/SOLR-9077 > > It could be though that there is a bug here. I'll see if I can reproduce > it locally. > > > > Joel Bernstein > http://joelsolr.blogspot.com/ > > > On Thu, May 14, 2020 at 6:24 PM Nightingale, Jonathan A (US) < > jonathan.nighting...@baesystems.com> wrote: > > > I'm looking on master on git hub, the solrj tests assume never use > > aliases Just as an example. that’s all over the place in the tests > > > > > > https://github.com/apache/lucene-solr/blob/master/solr/solrj/src/test/ > > org/apache/solr/client/solrj/io/stream/StreamDecoratorTest.java > > > > @Test > > public void testTerminatingDaemonStream() throws Exception { > > Assume.assumeTrue(!useAlias); > > > > -----Original Message----- > > From: Joel Bernstein <joels...@gmail.com> > > Sent: Wednesday, May 13, 2020 1:11 PM > > To: solr-user@lucene.apache.org > > Subject: Re: using aliases in topic stream > > > > *** WARNING *** > > EXTERNAL EMAIL -- This message originates from outside our organization. > > > > > > What version of Solr are you using? The topic stream in master seems > > to have the code in place to query aliases. > > > > Joel Bernstein > > http://joelsolr.blogspot.com/ > > > > > > On Wed, May 13, 2020 at 12:33 PM Nightingale, Jonathan A (US) < > > jonathan.nighting...@baesystems.com> wrote: > > > > > Hi Everyone, > > > > > > I'm trying to run this stream and I get the following error > > > > > > topic(topics,collection1, > > > q="classes:GXP/INDEX",fl="uuid",id="feed-8",initialCheckpoint=0,chec > > > kp > > > ointEvery=-1) > > > > > > { > > > "result-set": { > > > "docs": [ > > > { > > > "EXCEPTION": "Slices not found for collection1", > > > "EOF": true, > > > "RESPONSE_TIME": 6 > > > } > > > ] > > > } > > > } > > > > > > "collection1" is an alias. I can search using the alias perfectly > > > fine. In fact the search stream operation works fine with the alias. > > > It's just this topic one I've seen so far. Does anyone know why this > is? > > > > > > Thanks! > > > Jonathan Nightingale > > > > > > > > >
