Hello, There is https://issues.apache.org/jira/browse/LUCENE-7049
On Thu, Aug 4, 2016 at 4:35 PM, Michael McCandless < luc...@mikemccandless.com> wrote: > Lucene's merging is concurrent, but Solr unfortunately uses > UninvertingReader on each DBQ ... I'm not sure why. I think you should ask > on the solr-user list? > > Or maybe try to change your deletes to be by Term instead of Query? > > Mike McCandless > > http://blog.mikemccandless.com > > On Thu, Aug 4, 2016 at 7:03 AM, Bernd Fehling < > bernd.fehl...@uni-bielefeld.de> wrote: > > > While increasing the indexing load of version 5.5.3 I see > > threads where one merging thread is blocking other merging threads. > > But is this concurrent merging? > > > > Bernd > > > > "Lucene Merge Thread #6" - Thread t@40280 java.lang.Thread.State: > > BLOCKED > > at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4008) > > - waiting to lock <6d75db> (a org.apache.solr.update.SolrIndexWriter) > > owned by "Lucene Merge Thread #8" t@53896 > > at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3655) > > at > > > org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:588) > > at > > > org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:626) > > Locked ownable synchronizers: - None > > > > "Lucene Merge Thread #7" - Thread t@40281 java.lang.Thread.State: > > BLOCKED > > at > org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4166) > > - waiting to lock <6d75db> (a org.apache.solr.update.SolrIndexWriter) > > owned by "Lucene Merge Thread #8" t@53896 > > at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3655) > > at > > > org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:588) > > at > > > org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:626) > > Locked ownable synchronizers: - None > > > > "Lucene Merge Thread #8" - Thread t@53896 java.lang.Thread.State: > > RUNNABLE > > at java.lang.System.identityHashCode(Native Method) > > at org.apache.lucene.index.IndexReader.hashCode(IndexReader.java:302) > > at java.util.WeakHashMap.hash(WeakHashMap.java:298) > > at java.util.WeakHashMap.put(WeakHashMap.java:449) > > at java.util.Collections$SetFromMap.add(Collections.java:5461) > > at > java.util.Collections$SynchronizedCollection.add(Collections.java:2035) > > - locked <4c8b5399> (a java.util.Collections$SynchronizedSet) > > at > > > org.apache.lucene.index.IndexReader.registerParentReader(IndexReader.java:138) > > at > > > org.apache.lucene.index.FilterLeafReader.<init>(FilterLeafReader.java:306) > > at > > > org.apache.lucene.uninverting.UninvertingReader.<init>(UninvertingReader.java:184) > > at > > > org.apache.solr.update.DeleteByQueryWrapper.wrap(DeleteByQueryWrapper.java:52) > > at > > > org.apache.solr.update.DeleteByQueryWrapper.createWeight(DeleteByQueryWrapper.java:72) > > at > > > org.apache.lucene.search.IndexSearcher.createWeight(IndexSearcher.java:904) > > at > > > org.apache.lucene.search.IndexSearcher.createNormalizedWeight(IndexSearcher.java:887) > > at > > > org.apache.lucene.index.BufferedUpdatesStream.applyQueryDeletes(BufferedUpdatesStream.java:713) > > at > > > org.apache.lucene.index.BufferedUpdatesStream.applyDeletesAndUpdates(BufferedUpdatesStream.java:246) > > - locked <9f8d81c> (a org.apache.lucene.index.BufferedUpdatesStream) > > at org.apache.lucene.index.IndexWriter._mergeInit(IndexWriter.java:3834) > > - locked <6d75db> (a org.apache.solr.update.SolrIndexWriter) > > at org.apache.lucene.index.IndexWriter.mergeInit(IndexWriter.java:3792) > > - locked <6d75db> (a org.apache.solr.update.SolrIndexWriter) > > at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3646) > > at > > > org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:588) > > at > > > org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:626) > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > > For additional commands, e-mail: java-user-h...@lucene.apache.org > > > > > -- Sincerely yours Mikhail Khludnev
