![]() 07:55:13.433 ERROR (OldIndexDirector圜leanupThreadForCore-PDFIndex) o.a.s.c.SolrCore Failed to cleanup old index directories for core PDFIndexĪt .HdfsDirectoryFactory.cleanupOldIndexDirectories(HdfsDirectoryFactory.java:564)Īt .SolrCore.lambda$cleanupOldIndexDirectories$19(SolrCore. Some PDFs are not even possible to parse because they are password-protected. 07:55:13.431 ERROR (OldIndexDirector圜leanupThreadForCore-PDFIndex) o.a.s.c.HdfsDirectoryFactory Error checking for old index directories to clean-up.Īt .DFSClient.checkOpen(DFSClient.java:808)Īt .DFSClient.listPaths(DFSClient.java:2083)Īt .DFSClient.listPaths(DFSClient.java:2069)Īt .DistributedFileSystem.listStatusInternal(DistributedFileSystem.java:791)Īt .DistributedFileSystem.access$700(DistributedFileSystem.java:106)Īt .DistributedFileSystem$18.doCall(DistributedFileSystem.java:853)Īt .DistributedFileSystem$18.doCall(DistributedFileSystem.java:849)Īt .FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)Īt .DistributedFileSystem.listStatus(DistributedFileSystem.java:860)Īt .FileSystem.listStatus(FileSystem.java:1517)Īt .FileSystem.listStatus(FileSystem.java:1557)Īt .HdfsDirectoryFactory.cleanupOldIndexDirectories(HdfsDirectoryFactory.java:546)Īt .SolrCore.lambda$cleanupOldIndexDirectories$19(SolrCore.java:3050) One of the most difficult file types for parsing and extracting data is PDF. ![]() The most likely cause is another Solr server (or another solr core in this server) also configured to use this directory other possible causes may be specific to lockType: hdfsĪt .SolrCore.initIndex(SolrCore.java:712)Īt .SolrCore.(SolrCore.java:923) This blog post is about Apache Solr internals and the Lucene Inverted Index. A Document&contains&Fields import .Document import .Field protected Document getDocument(File f) throws. The most likely cause is another Solr server (or another solr core in this server) also configured to use this directory other possible causes may be specific to lockType: hdfsĪt .SolrCore.(SolrCore.java:977)Īt .SolrCore.(SolrCore.java:830)Īt .CoreContainer.createFromDescriptor(CoreContainer.java:950)Ĭaused by: .LockObtainFailedException: Index dir 'hdfs://192.168.1.16:8020/PDFIndex/data/index/' of core 'PDFIndex' is already locked. : .SolrException: Unable to create core Īt .report(FutureTask.java:122)Īt .get(FutureTask.java:192)Īt .CoreContainer.lambda$load$6(CoreContainer.java:594)Īt $n(InstrumentedExecutorService.java:176)Īt $RunnableAdapter.call(Executors.java:511)Īt .run(FutureTask.java:266)Īt .util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:229)Īt .runWorker(ThreadPoolExecutor.java:1149)Īt $n(ThreadPoolExecutor.java:624)Ĭaused by: .SolrException: Unable to create core Īt .CoreContainer.createFromDescriptor(CoreContainer.java:966)Īt .CoreContainer.lambda$load$5(CoreContainer.java:565)Īt $InstrumentedCallable.call(InstrumentedExecutorService.java:197)Ĭaused by: .SolrException: Index dir 'hdfs://192.168.1.16:8020/PDFIndex/data/index/' of core 'PDFIndex' is already locked. Solr collection indexed to pdf in HDFS throws an error during Solr restart.I have created the collection in Solr which will index the pdf files and this collection is indexing all the pdf in HDFS. The following code will load the content from a PDF file, and the extracted content is form into a String representation so that it can be further processed by Lucene for indexing purposes.When I restart Solr it throws the following error. Mvn archetype:generate -DartifactId=.demo -DgroupId=org.fazlan -Dversion=1.0-SNAPSHOT -DinteractiveMode=false Please use the links on the left to access Lucene. You may also refer to Apache Lucene Tutorial: Indexing Microsoft Documents Apache Lucene is an open source project available for free download. You can read more about Apache PDFBox.Īrticle applies to Lucene 3.6.0 and PDFBox 0.7.3. Did you know that Packt offers eBook versions of every book published, with PDF. ![]() ![]() ![]() Elastic celebrates the connection and integration with Lucene’s code and community through a collective timeline. on open source technologies such as Apache Lucene, Solr, ElasticSearch. One such library is Apache PDFBox, which we'll use in the article. Apache Lucene the backbone of Elasticsearch is proof that when open source software is nurtured by a thriving community, it can flourish and grow into technology that powers digital experiences across the globe. Therefore, we need to use one of the APIs that enables us to perform text manipulation on PDF files. Apache Lucene doesn't have the build-in capability to process PDF files. Here, we look at how to index content in a PDF file. This article is a sequel to Apache Lucene Tutorial: Lucene for Text Search. ![]()
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