Hi Erick, Thanks for your reply.
However, I get this error when I tried to run the IndexMergeTool when Solr is running. But the merge is successful when I stop Solr. What could be the reason? Merging... Exception in thread "main" org.apache.lucene.store.LockObtainFailedException: Lock held by another program: C:\solr\collection1_shard1_replica1\data\index.20170713083232277\write.lock at org.apache.lucene.store.NativeFSLockFactory.obtainFSLock(NativeFSLock Factory.java:118) at org.apache.lucene.store.FSLockFactory.obtainLock(FSLockFactory.java:4 1) at org.apache.lucene.store.BaseDirectory.obtainLock(BaseDirectory.java:4 5) at org.apache.lucene.store.FilterDirectory.obtainLock(FilterDirectory.ja va:104) at org.apache.lucene.index.IndexWriter.acquireWriteLocks(IndexWriter.jav a:2571) at org.apache.lucene.index.IndexWriter.addIndexes(IndexWriter.java:2629) at org.apache.lucene.misc.IndexMergeTool.main(IndexMergeTool.java:54) Regards, Edwin On 1 September 2017 at 22:51, Erick Erickson <erickerick...@gmail.com> wrote: > You don't have to stop solr to run the merge index tool. I would, > however, stop _indexing_ to that Solr instance. > > And you probably have to reload the core (or restart the collection) > afterwards to pick up the merged documents. > > Best, > Erick > > On Fri, Sep 1, 2017 at 6:46 AM, Zheng Lin Edwin Yeo > <edwinye...@gmail.com> wrote: > > Hi, > > > > Just to check, are we able to run the IndexMergeTool on the index that is > > still running on Solr? Or do we have to stop Solr first before running > the > > IndexMergeTool? > > > > Regards, > > Edwin > > > > On 26 August 2017 at 23:41, Zheng Lin Edwin Yeo <edwinye...@gmail.com> > > wrote: > > > >> Thanks for pointing out the mistake. The script can run after I correct > >> the ":" to ";". > >> > >> However, I am getting the following error now. > >> > >> Merging... > >> Exception in thread "main" org.apache.lucene.index. > IndexNotFoundException: > >> no se > >> gments* file found in HardlinkCopyDirectoryWrapper(MMapDirectory@C > :\solr\ > >> collection1_shard1_replica1\data\in > >> dex lockFactory=org.apache.lucene.store.NativeFSLockFactory@1ff8b8f): > >> files: [wr > >> ite.lock] > >> at org.apache.lucene.index.SegmentInfos$FindSegmentsFile. > >> run(SegmentInfo > >> s.java:687) > >> at org.apache.lucene.index.SegmentInfos$FindSegmentsFile. > >> run(SegmentInfo > >> s.java:644) > >> at org.apache.lucene.index.SegmentInfos.readLatestCommit( > >> SegmentInfos.ja > >> va:450) > >> at org.apache.lucene.index.IndexWriter.addIndexes( > >> IndexWriter.java:2653) > >> > >> at org.apache.lucene.misc.IndexMergeTool.main( > >> IndexMergeTool.java:54) > >> > >> > >> This was done after I have stop Solr. What could be the issue here? > >> > >> Regards, > >> Edwin > >> > >> On 26 August 2017 at 08:42, Leonardo Perez Pulido < > >> leoperezpul...@gmail.com> wrote: > >> > >>> Hi, > >>> Isn't the Windows classpath separator a semi-colon? Like this: > >>> cene-core-6.5.1.jar"*;*"C:solr/serve > >>> Just saying. > >>> Regards. > >>> > >>> On Fri, Aug 25, 2017 at 8:33 PM, Zheng Lin Edwin Yeo < > >>> edwinye...@gmail.com> > >>> wrote: > >>> > >>> > Hi Erick, > >>> > > >>> > Thanks for your reply. > >>> > I have check, it was not due to the typo. The same error occurs even > >>> with > >>> > the slash. > >>> > > >>> > Regards, > >>> > Edwin > >>> > > >>> > On 26 August 2017 at 05:16, Erick Erickson <erickerick...@gmail.com> > >>> > wrote: > >>> > > >>> > > You classpath is not correct. Unless it's a typo, > >>> > > :"C:solr/server/solr-webapp/webapp/WEB-INF/lib/lucene- > misc-6.5.1.jar" > >>> > > is wrong, it should be: > >>> > > "C:/solr/server/solr-webapp/webapp/WEB-INF/lib/lucene-misc- > >>> 6.5.1.jar", > >>> > > note the slash before "solr". > >>> > > > >>> > > If that's not just a typo you need to look further as to why the > >>> > > classpath isn't being specified correctly. > >>> > > > >>> > > Best, > >>> > > Erick > >>> > > > >>> > > On Thu, Aug 24, 2017 at 7:52 PM, Zheng Lin Edwin Yeo > >>> > > <edwinye...@gmail.com> wrote: > >>> > > > Hi, > >>> > > > > >>> > > > I am trying to use the IndexMergeTool to merge two indexes that > are > >>> > > indexed > >>> > > > in different collections into one. Both collections have the same > >>> > fields, > >>> > > > and are using Parent-Child Block-Join. > >>> > > > > >>> > > > When I tried to run the following command as stated from the Solr > >>> Wiki > >>> > > > https://cwiki.apache.org/confluence/display/solr/Merging+Indexes > >>> > > > > >>> > > > java -cp > >>> > > > "C:/solr/server/solr-webapp/webapp/WEB-INF/lib/lucene- > >>> > > core-6.5.1.jar":"C:solr/server/solr-webapp/webapp/WEB- > >>> > > INF/lib/lucene-misc-6.5.1.jar" > >>> > > > org/apache/lucene/misc/IndexMergeTool > >>> > > > C:/solr/collectionMerge_shard1_replica1/data/index > >>> > > > C:/solr/collection1_shard1_replica1/data/index > >>> > > > C:/solr/collection2_shard1_replica1/data/index > >>> > > > > >>> > > > I get the following error: > >>> > > > Error: Could not find or load main class > >>> > > > org.apache.lucene.misc.IndexMergeTool > >>> > > > > >>> > > > What could be causing the error? > >>> > > > > >>> > > > This is done on Solr 6.5.1 > >>> > > > > >>> > > > Regards, > >>> > > > Edwin > >>> > > > >>> > > >>> > >> > >> >