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From Jörn Franke <jornfra...@gmail.com>
Subject Re: Solr 8.1 issue with collection aliases
Date Thu, 16 May 2019 02:36:51 GMT
Note only an admin UI issue. Access collections via their alias does not work.

> Am 15.05.2019 um 15:47 schrieb Mikhail Khludnev <mkhl@apache.org>:
> 
> It seems creating alias in Solr Admin UI is broken. It's a minor issue for 8.1.0 
> I've alias via REST call http://localhost:8983/solr/admin/collections?action=CREATEALIAS&name=testalias&collections=gettingstarted
 successfully. 
> Jörn, thanks for reporting. 
> 
>> On Tue, May 14, 2019 at 11:03 PM Jörn Franke <jornfranke@gmail.com> wrote:
>> Hi,
>> 
>> I tried to upgrade from 8.0 to 8.1. I noticed that there is an issue with
>> collection aliases, but I am not 100% sure it is due to the upgrade.
>> 
>> Situation:
>> I have a collection called c_testcollection.
>> I have an alias called testcollection.
>> Alias "testcollection" points to "c_testcollection".
>> On Solr 8.0 no issue
>> 
>> After upgrade to Solr 8.1:
>> When I do a query on c_testcollection then there is no issue:
>> http://localhost:8983/solr/c_testcollection/select?q=test
>> When I do a query on testcollection then I receive the stacktrace below
>> http://localhost:8983/solr/testcollection/select?q=test
>> 
>> Additionally I observe a strange behavior in the admin ui. When I try to
>> create an alias (e.g. new) for a new collection (e.g. c_new) then it
>> creates two aliases:
>> new => c_new
>> c_new => c_new
>> if i then do a query on the alias new it works without issues. If I remove
>> the alias from c_new to c_new then I get the same error. Is this desired
>> behaviour?
>> It is rather annoying to have unnecessary aliases, because I need to filter
>> them out in my application when retrieving all aliases.
>> Is there a related issue.
>> 
>> Here the stacktrace:
>> {
>>   "error":{
>>     "trace":"java.lang.NullPointerException\n\tat
>> java.base/java.util.AbstractCollection.addAll(AbstractCollection.java:351)\n\tat
>> org.apache.solr.common.cloud.Aliases.resolveAliasesGivenAliasMap(Aliases.java:258)\n\tat
>> org.apache.solr.common.cloud.Aliases.resolveAliases(Aliases.java:181)\n\tat
>> org.apache.solr.servlet.HttpSolrCall.resolveCollectionListOrAlias(HttpSolrCall.java:385)\n\tat
>> org.apache.solr.servlet.HttpSolrCall.init(HttpSolrCall.java:273)\n\tat
>> org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:486)\n\tat
>> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:397)\n\tat
>> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:343)\n\tat
>> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1602)\n\tat
>> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:540)\n\tat
>> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)\n\tat
>> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)\n\tat
>> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)\n\tat
>> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)\n\tat
>> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1588)\n\tat
>> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)\n\tat
>> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345)\n\tat
>> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)\n\tat
>> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)\n\tat
>> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1557)\n\tat
>> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)\n\tat
>> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)\n\tat
>> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)\n\tat
>> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:220)\n\tat
>> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126)\n\tat
>> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)\n\tat
>> org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:335)\n\tat
>> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)\n\tat
>> org.eclipse.jetty.server.Server.handle(Server.java:502)\n\tat
>> org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)\n\tat
>> org.eclipse.jetty.server.HttpChannel.run(HttpChannel.java:305)\n\tat
>> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)\n\tat
>> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)\n\tat
>> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)\n\tat
>> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:132)\n\tat
>> org.eclipse.jetty.http2.HTTP2Connection.produce(HTTP2Connection.java:171)\n\tat
>> org.eclipse.jetty.http2.HTTP2Connection.onFillable(HTTP2Connection.java:126)\n\tat
>> org.eclipse.jetty.http2.HTTP2Connection$FillableCallback.succeeded(HTTP2Connection.java:338)\n\tat
>> org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)\n\tat
>> org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.onFillable(SslConnection.java:411)\n\tat
>> org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:305)\n\tat
>> org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:159)\n\tat
>> org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)\n\tat
>> org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)\n\tat
>> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)\n\tat
>> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)\n\tat
>> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)\n\tat
>> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)\n\tat
>> org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)\n\tat
>> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)\n\tat
>> org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)\n\tat
>> java.base/java.lang.Thread.run(Thread.java:834)\n",
>>     "code":500}}
>> 
>> 
>> Thank you.
>> 
>> Best regards
> 
> 
> -- 
> Sincerely yours
> Mikhail Khludnev

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