Dear list, I changed to Solr 5.5.1 - before I made some extensive tests with 5.5.0
With 5.5.1 I get the exceptions copied at the bottom of this message. When I changed back to version 5.5.0 (on the same host) using the same configurations for this core the creation of the core is possible. Moving the 5.5.1 configuration to another host I don't get this exception. At least so far. Any idea why this behavior? Thanks a lot! Günter ** exeception messages** org.apache.solr.common.SolrException at org.apache.solr.core.SolrCore.<init>(SolrCore.java:820) at org.apache.solr.core.SolrCore.<init>(SolrCore.java:658) at org.apache.solr.core.CoreContainer.create(CoreContainer.java:814) at org.apache.solr.core.CoreContainer.access$000(CoreContainer.java:87) at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:467) at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:458) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor$1.run(ExecutorUtil.java:231) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: java.nio.channels.OverlappingFileLockException at sun.nio.ch.SharedFileLockTable.checkList(FileLockTable.java:255) at sun.nio.ch.SharedFileLockTable.add(FileLockTable.java:152) at sun.nio.ch.FileChannelImpl.tryLock(FileChannelImpl.java:1108) at java.nio.channels.FileChannel.tryLock(FileChannel.java:1155) at org.apache.lucene.store.NativeFSLockFactory.obtainFSLock(NativeFSLockFactory.java:114) at org.apache.lucene.store.FSLockFactory.obtainLock(FSLockFactory.java:41) at org.apache.lucene.store.BaseDirectory.obtainLock(BaseDirectory.java:45) at org.apache.lucene.store.FilterDirectory.obtainLock(FilterDirectory.java:94) at org.apache.lucene.index.IndexWriter.isLocked(IndexWriter.java:4487) at org.apache.solr.core.SolrCore.initIndex(SolrCore.java:522) at org.apache.solr.core.SolrCore.<init>(SolrCore.java:761) ... 10 more java.util.concurrent.ExecutionException: org.apache.solr.common.SolrException: Unable to create core [sbbiblio] at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at org.apache.solr.core.CoreContainer$2.run(CoreContainer.java:496) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor$1.run(ExecutorUtil.java:231) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: org.apache.solr.common.SolrException: Unable to create core [sbbiblio] at org.apache.solr.core.CoreContainer.create(CoreContainer.java:828) at org.apache.solr.core.CoreContainer.access$000(CoreContainer.java:87) at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:467) at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:458) ... 5 more Caused by: org.apache.solr.common.SolrException at org.apache.solr.core.SolrCore.<init>(SolrCore.java:820) at org.apache.solr.core.SolrCore.<init>(SolrCore.java:658) at org.apache.solr.core.CoreContainer.create(CoreContainer.java:814) ... 8 more Caused by: java.nio.channels.OverlappingFileLockException at sun.nio.ch.SharedFileLockTable.checkList(FileLockTable.java:255) at sun.nio.ch.SharedFileLockTable.add(FileLockTable.java:152) at sun.nio.ch.FileChannelImpl.tryLock(FileChannelImpl.java:1108) at java.nio.channels.FileChannel.tryLock(FileChannel.java:1155) at org.apache.lucene.store.NativeFSLockFactory.obtainFSLock(NativeFSLockFactory.java:114) at org.apache.lucene.store.FSLockFactory.obtainLock(FSLockFactory.java:41) at org.apache.lucene.store.BaseDirectory.obtainLock(BaseDirectory.java:45) at org.apache.lucene.store.FilterDirectory.obtainLock(FilterDirectory.java:94) at org.apache.lucene.index.IndexWriter.isLocked(IndexWriter.java:4487) at org.apache.solr.core.SolrCore.initIndex(SolrCore.java:522) at org.apache.solr.core.SolrCore.<init>(SolrCore.java:761) ... 10 more -- UNIVERSITÄT BASEL Universitätsbibliothek Günter Hipler Projekt swissbib Schönbeinstrasse 18-20 4056 Basel, Schweiz Tel.: +41 61 267 31 12 Fax: +41 61 267 31 03 E-Mail guenter.hip...@unibas.ch URL www.swissbib.org