I've tried to post his several times, but have not seen it in the discussion, maybe my account was removed? Anyway I need help with this issue. It looks like a bug to me
We use Solr 7.7.2 in a solrcloud consisting of 4 nodes. Each collection has 2 shards and we try to place a replica on each node and don't want to have more than one replica for a collection on the same node. One of our collections has very specific requirements that force us to use TLOG replicas for the collection. We only have 4 nodes, we don't want more than one replica for the collection on a node. From what I see in the documentation I would expect that adding the rule parameter to the collection creation call would give me what I want. For most of our collections it does. However, it fails if I try this with a tlog collection. http://localhost:8983/solr/admin/collections?action=CREATE&name=b2b-catalog-material-20210320T&collection.configName=b2b-catalog-material-20210320&numShards=2&rule=replica:<2,node:*&tlogReplicas=2 it fails with the error: TLOG or PULL replica types not supported with placement rules or cluster policies This seems like a bug to me especially after I saw this Jira: https://issues.apache.org/jira/browse/SOLR-10233 According to that all replicas should be supported. Is there a work around for this? How can I place TLOG replicas on separate nodes? Personally I find the relevancy values for TLOG replicas much better than NRT replicas and think tlog should be the default replica type. This was the complete response. { "responseHeader": { "status": 500, "QTime": 574 }, "Operation create caused exception:": "org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: TLOG or PULL replica types not supported with placement rules or cluster policies", "exception": { "msg": "TLOG or PULL replica types not supported with placement rules or cluster policies", "rspCode": 500 }, "error": { "metadata": [ "error-class", "org.apache.solr.common.SolrException", "root-error-class", "org.apache.solr.common.SolrException" ], "msg": "TLOG or PULL replica types not supported with placement rules or cluster policies", "trace": "org.apache.solr.common.SolrException: TLOG or PULL replica types not supported with placement rules or cluster policies\n\tat org.apache.solr.client.solrj.SolrResponse.getException(SolrResponse.java:53)\n\tat org.apache.solr.handler.admin.CollectionsHandler.invokeAction(CollectionsHandler.java:275)\n\tat org.apache.solr.handler.admin.CollectionsHandler.handleRequestBody(CollectionsHandler.java:247)\n\tat org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:199)\n\tat org.apache.solr.servlet.HttpSolrCall.handleAdmin(HttpSolrCall.java:736)\n\tat org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:717)\n\tat org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:496)\n\tat org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:395)\n\tat org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:341)\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.StatisticsHandler.handle(StatisticsHandler.java:174)\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.HttpConnection.onFillable(HttpConnection.java:260)\n\tat org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)\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.lang.Thread.run(Thread.java:748)\n", "code": 500 } } This message and any attachment are confidential and may be privileged or otherwise protected from disclosure. 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