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Christine Poerschke commented on SOLR-12239: -------------------------------------------- Looks like LUCENE-8505 subsequently changed the {{validateIndexSort}} logic slightly from 8.0 onwards but the issue here remains based on [https://github.com/apache/lucene-solr/blob/releases/lucene-solr/8.2.0/lucene/core/src/java/org/apache/lucene/index/IndexWriter.java#L938-L949] reading i.e. the transition from "no sorting" to "some sorting" is considered invalid. I'm curious if some segments being unsorted could perhaps be accommodated somehow? > Enabling index sorting causes "segment not sorted with indexSort=null" > ---------------------------------------------------------------------- > > Key: SOLR-12239 > URL: https://issues.apache.org/jira/browse/SOLR-12239 > Project: Solr > Issue Type: Improvement > Affects Versions: 7.1 > Reporter: Ishan Chattopadhyaya > Priority: Major > > When index sorting is enabled on an existing collection/index (using > SortingMergePolicy), the collection reload causes the following exception: > {code} > java.util.concurrent.ExecutionException: > org.apache.solr.common.SolrException: Unable to create core > [mycoll_shard1_replica_n1] > at java.util.concurrent.FutureTask.report(FutureTask.java:122) > at java.util.concurrent.FutureTask.get(FutureTask.java:192) > at > org.apache.solr.core.CoreContainer.lambda$load$14(CoreContainer.java:671) > at > com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:176) > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) > at java.util.concurrent.FutureTask.run(FutureTask.java:266) > at > org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:188) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) > at java.lang.Thread.run(Thread.java:748) > Caused by: org.apache.solr.common.SolrException: Unable to create core > [mycoll_shard1_replica_n1] > at > org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1045) > at > org.apache.solr.core.CoreContainer.lambda$load$13(CoreContainer.java:642) > at > com.codahale.metrics.InstrumentedExecutorService$InstrumentedCallable.call(InstrumentedExecutorService.java:197) > ... 5 more > Caused by: org.apache.solr.common.SolrException: Error opening new searcher > at org.apache.solr.core.SolrCore.<init>(SolrCore.java:989) > at org.apache.solr.core.SolrCore.<init>(SolrCore.java:844) > at > org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1029) > ... 7 more > Caused by: org.apache.solr.common.SolrException: Error opening new searcher > at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:2076) > at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:2196) > at org.apache.solr.core.SolrCore.initSearcher(SolrCore.java:1072) > at org.apache.solr.core.SolrCore.<init>(SolrCore.java:961) > ... 9 more > Caused by: org.apache.lucene.index.CorruptIndexException: segment not sorted > with indexSort=null (resource=_0(7.1.0):C1) > at > org.apache.lucene.index.IndexWriter.validateIndexSort(IndexWriter.java:1185) > at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:1108) > at > org.apache.solr.update.SolrIndexWriter.<init>(SolrIndexWriter.java:119) > at > org.apache.solr.update.SolrIndexWriter.create(SolrIndexWriter.java:94) > at > org.apache.solr.update.DefaultSolrCoreState.createMainIndexWriter(DefaultSolrCoreState.java:257) > at > org.apache.solr.update.DefaultSolrCoreState.getIndexWriter(DefaultSolrCoreState.java:131) > at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:2037) > ... 12 more > {code} > This means that the user actually needs to delete the index segments, reload > the collection and then re-index. This is bad user experience. -- This message was sent by Atlassian JIRA (v7.6.14#76016) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org