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https://issues.apache.org/jira/browse/SOLR-5418?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Erick Erickson reassigned SOLR-5418:
------------------------------------
Assignee: Erick Erickson
> Background merge after field removed from solr.xml causes error
> ---------------------------------------------------------------
>
> Key: SOLR-5418
> URL: https://issues.apache.org/jira/browse/SOLR-5418
> Project: Solr
> Issue Type: Bug
> Components: Schema and Analysis
> Affects Versions: 4.5
> Reporter: Erick Erickson
> Assignee: Erick Erickson
> Attachments: SOLR-5418.patch
>
>
> Problem from the user's list, cut/pasted below. Robert Muir hacked out a
> quick patch he pasted on the dev list, I'll append it shortly.
> I am working at implementing solr to work as the search backend for our web
> system. So far things have been going well, but today I made some schema
> changes and now things have broken.
> I updated the schema.xml file and reloaded the core (via the admin
> interface). No errors were reported in the logs.
> I then pushed 100 records to be indexed. A call to Commit afterwards
> seemed fine, however my next call for Optimize caused the following errors:
> java.io.IOException: background merge hit exception:
> _2n(4.4):C4263/154 _30(4.4):C134 _32(4.4):C10 _31(4.4):C10 into _37
> [maxNumSegments=1]
> null:java.io.IOException: background merge hit exception:
> _2n(4.4):C4263/154 _30(4.4):C134 _32(4.4):C10 _31(4.4):C10 into _37
> [maxNumSegments=1]
> Unfortunately, googling for background merge hit exception came up
> with 2 thing: a corrupt index or not enough free space. The host
> machine that's hosting solr has 227 out of 229GB free (according to df
> -h), so that's not it.
> I then ran CheckIndex on the index, and got the following results:
> http://apaste.info/gmGU
> As someone who is new to solr and lucene, as far as I can tell this
> means my index is fine. So I am coming up at a loss. I'm somewhat sure
> that I could probably delete my data directory and rebuild it but I am
> more interested in finding out why is it having issues, what is the
> best way to fix it, and what is the best way to prevent it from
> happening when this goes into production.
> Does anyone have any advice that may help?
> I helped Matthew find the logs and he posted this stack trace:
> 1691103929 [http-bio-8080-exec-3] INFO org.apache.solr.update.UpdateHandler
> â start
> commit{,optimize=true,openSearcher=true,waitSearcher=true,expungeDeletes=false,softCommit=false,prepareCommit=false}
> 1691104153 [http-bio-8080-exec-3] INFO
> org.apache.solr.update.processor.LogUpdateProcessor â [dbqItems]
> webapp=/solr path=/update
> params={optimize=true&_=1382999386564&wt=json&waitFlush=true} {} 0 224
> 1691104154 [http-bio-8080-exec-3] ERROR org.apache.solr.core.SolrCore â
> java.io.IOException: background merge hit exception: _2n(4.4):C4263/154
> _30(4.4):C134 _32(4.4):C10 _31(4.4):C10 into _39 [maxNumSegments=1]
> at
> org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1714)
> at
> org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1650)
> at
> org.apache.solr.update.DirectUpdateHandler2.commit(DirectUpdateHandler2.java:530)
> at
> org.apache.solr.update.processor.RunUpdateProcessor.processCommit(RunUpdateProcessorFactory.java:95)
> at
> org.apache.solr.update.processor.UpdateRequestProcessor.processCommit(UpdateRequestProcessor.java:64)
> at
> org.apache.solr.update.processor.DistributedUpdateProcessor.doLocalCommit(DistributedUpdateProcessor.java:1240)
> at
> org.apache.solr.update.processor.DistributedUpdateProcessor.processCommit(DistributedUpdateProcessor.java:1219)
> at
> org.apache.solr.update.processor.LogUpdateProcessor.processCommit(LogUpdateProcessorFactory.java:157)
> at
> org.apache.solr.handler.RequestHandlerUtils.handleCommit(RequestHandlerUtils.java:69)
> at
> org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:68)
> at
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
> at org.apache.solr.core.SolrCore.execute(SolrCore.java:1904)
> at
> org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:659)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:362)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:158)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
> at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
> at
> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
> at
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
> at
> org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:679)
> Caused by: java.lang.IllegalArgumentException: no such field what
> at
> org.apache.solr.core.SchemaCodecFactory$1.getPostingsFormatForField(SchemaCodecFactory.java:59)
> at
> org.apache.lucene.codecs.lucene42.Lucene42Codec$1.getPostingsFormatForField(Lucene42Codec.java:59)
> at
> org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.addField(PerFieldPostingsFormat.java:102)
> at
> org.apache.lucene.codecs.FieldsConsumer.merge(FieldsConsumer.java:71)
> at
> org.apache.lucene.index.SegmentMerger.mergeTerms(SegmentMerger.java:365)
> at org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:98)
> at
> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3772)
> at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3376)
> at
> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:405)
> at
> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:482)
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