Hmm, I wonder whether I *am* using an SSD or spinning disk, in Apache. :) I
guess I can try to find out.
I forgot to mention, this is with Solr 5.2.1 — is that likely to make much
difference?
--
David Moles
UC Curation Center
California Digital Library
On 4/7/16, 4:19 PM, "Chris Hostetter" wrote:
>
>hat's a strainge error to get.
>
>I can't explain why LinuxFileSystem can't load LinuxNativeDispatcher, but
>you can probably bypass hte entire situation by explicitly configuring
>ConcurrentMergeScheduler with defaults so that it doesn't try determine
>wether you are using an SSD or "spinning" disk...
>
>http://lucene.apache.org/core/5_5_0/core/org/apache/lucene/index/ConcurrentMergeScheduler.html
>https://cwiki.apache.org/confluence/display/solr/IndexConfig+in+SolrConfig#IndexConfiginSolrConfig-MergingIndexSegments
>
>Something like this in your indexConfig settings...
>
>
> 42
> 7
>
>
>...will force those specific settings, instead of trying to guess
>defaults.
>
>I haven't tested this, but in theory you can also use something like to
>indicate definitively that you are using a spinning disk (or not) but let
>it pick the appropriate default values for the merge count &
>threads accordingly ...
>
>
> true
>
>
>
>
>: Date: Thu, 7 Apr 2016 22:56:54 +
>: From: David Moles
>: Reply-To: solr-user@lucene.apache.org
>: To: "solr-user@lucene.apache.org"
>: Subject: Solr update fails with “Could not initialize class
>: sun.nio.fs.LinuxNativeDispatcher”
>:
>: Hi folks,
>:
>: New Solr user here, attempting to apply the following Solr update command
>via curl
>:
>: curl 'my-solr-server:8983/solr/my-core/update?commit=true' \
>: -H 'Content-type:application/json' -d \
>:
>'[{"my_id_field":"some-id-value","my_other_field":{"set":"new-field-value"}}]'
>:
>: I'm getting an error response with a stack trace that reduces to:
>:
>: Caused by: java.lang.NoClassDefFoundError: Could not initialize class
>sun.nio.fs.LinuxNativeDispatcher
>: at sun.nio.fs.LinuxFileSystem.getMountEntries(LinuxFileSystem.java:81)
>: at sun.nio.fs.LinuxFileStore.findMountEntry(LinuxFileStore.java:86)
>: at sun.nio.fs.UnixFileStore.(UnixFileStore.java:65)
>: at sun.nio.fs.LinuxFileStore.(LinuxFileStore.java:44)
>: at
>sun.nio.fs.LinuxFileSystemProvider.getFileStore(LinuxFileSystemProvider.java:51)
>: at
>sun.nio.fs.LinuxFileSystemProvider.getFileStore(LinuxFileSystemProvider.java:39)
>: at
>sun.nio.fs.UnixFileSystemProvider.getFileStore(UnixFileSystemProvider.java:368)
>: at java.nio.file.Files.getFileStore(Files.java:1461)
>: at org.apache.lucene.util.IOUtils.getFileStore(IOUtils.java:528)
>: at org.apache.lucene.util.IOUtils.spinsLinux(IOUtils.java:483)
>: at org.apache.lucene.util.IOUtils.spins(IOUtils.java:472)
>: at org.apache.lucene.util.IOUtils.spins(IOUtils.java:447)
>: at
>org.apache.lucene.index.ConcurrentMergeScheduler.initDynamicDefaults(ConcurrentMergeScheduler.java:371)
>: at
>org.apache.lucene.index.ConcurrentMergeScheduler.merge(ConcurrentMergeScheduler.java:457)
>: at org.apache.lucene.index.IndexWriter.maybeMerge(IndexWriter.java:1817)
>: at
>org.apache.lucene.index.IndexWriter.prepareCommitInternal(IndexWriter.java:2761)
>: at
>org.apache.lucene.index.IndexWriter.commitInternal(IndexWriter.java:2866)
>: at org.apache.lucene.index.IndexWriter.commit(IndexWriter.java:2833)
>: at
>org.apache.solr.update.DirectUpdateHandler2.commit(DirectUpdateHandler2.java:586)
>: 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:1635)
>: at
>org.apache.solr.update.processor.DistributedUpdateProcessor.processCommit(DistributedUpdateProcessor.java:1612)
>: at
>org.apache.solr.update.processor.LogUpdateProcessor.processCommit(LogUpdateProcessorFactory.java:161)
>: at
>org.apache.solr.handler.RequestHandlerUtils.handleCommit(RequestHandlerUtils.java:69)
>: at
>org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:78)
>: at
>org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:143)
>: at org.apache.solr.core.SolrCore.execute(SolrCore.java:2064)
>: at org.apache.solr.serv
