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From Steven White <swhite4...@gmail.com>
Subject Re: Warning and Error messages in Solr's log
Date Tue, 08 Mar 2016 16:16:06 GMT
Re-posting.  Anyone has any idea about this question?  Thanks.

Steve

On Mon, Mar 7, 2016 at 5:15 PM, Steven White <swhite4141@gmail.com> wrote:

> Hi folks,
>
> In Solr's solr-8983-console.log I see the following (about 50 in a span of
> 24 hours when index is on going):
>
>     WARNING: Couldn't flush user prefs:
> java.util.prefs.BackingStoreException: Couldn't get file lock.
>
> What does it mean?  Should I wary about it?
>
> What about this one:
>
>     118316292 [qtp114794915-39] ERROR org.apache.solr.core.SolrCore  [
> test_idx] ? java.lang.IllegalStateException: file: MMapDirectory@/b/vin291f1/vol/vin291f1v3/idx/solr_index/test/data/index
> lockFactory=org.apache.lucene.store.NativeFSLockFactory@169f6ad3 appears
> both in delegate and in cache: cache=[_2omj.fnm, _2omg_Lucene50_0.doc,
> ........ _2omg.nvm],delegate=[write.lock, _1wuk.si, ........ segments_2b]
>         at
> org.apache.lucene.store.NRTCachingDirectory.listAll(NRTCachingDirectory.java:103)
>
> What does it mean?
>
> I _think_ the error log is due to the NAS drive being disconnected before
> shutting down Solr, but I need a Solr expect to confirm.
>
> Unfortunately, I cannot find anything in solr.log files regarding this
> because those files have rotated.
>
> Thanks in advanced.
>
> Steve
>

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