@Anton; see https://github.com/apache/lucene-solr/pull/2239. I did run
some luceneutil vector tasks, and did not see any exceptions in the
logs; then again I did not see them either with or without this patch.
I think you should definitely open an issue, and please post the
command you ran that generated the exceptions.

On Fri, Jan 22, 2021 at 4:21 PM Michael Sokolov <msoko...@gmail.com> wrote:
>
> Thanks Anton! Providing a stack trace is great; we can afford the
> black pixels I think ;)
>
> I found some bugs in a separate effort which might be related,
> although I saw a different exception so I'm not sure. I'll post a
> patch soon, and if you are able to re-test and see if you can
> reproduce, that would be a huge help!
>
> -Mike
>
> On Thu, Jan 21, 2021 at 4:37 PM Anton Hägerstrand <an...@blunders.io> wrote:
> >
> > Hi!
> >
> > I recently posted about profiling the nightly benchmarks, and in the 
> > process of doing that I came across an exception that looks rather nasty. I 
> > was about to create a Jira issue, but the nice Jira submit form told me to 
> > post it here or in irc first.
> >
> > The Lucene commit where I saw this was 
> > eb24e95731b9f865b95b821c1745264fdc58119, which was the master branch's HEAD 
> > this Saturday. It's is an EOF error, which seems to happen when reading 
> > vector values:
> >
> > Exception in thread "Thread-1" java.lang.RuntimeException: 
> > java.lang.RuntimeException: java.io.EOFException: seek past EOF: 
> > MMapIndexInput(path="/home/anton/dev/lucene-bench-home/indices/lucene_bench_2021-01-17_eb24e95_medium_1thread/index/_32.vec")
> >  [slice=vector-data]
> >   at perf.TaskThreads$TaskThread.run(TaskThreads.java:105)
> > Caused by: java.lang.RuntimeException: java.io.EOFException: seek past EOF: 
> > MMapIndexInput(path="/home/anton/dev/lucene-bench-home/indices/lucene_bench_2021-01-17_eb24e95_medium_1thread/index/_32.vec")
> >  [slice=vector-data]
> >    at perf.SearchTask.go(SearchTask.java:322)
> >    at perf.TaskThreads$TaskThread.run(TaskThreads.java:91)
> > Caused by: java.io.EOFException: seek past EOF: 
> > MMapIndexInput(path="/home/anton/dev/lucene-bench-home/indices/lucene_bench_2021-01-17_eb24e95_medium_1thread/index/_32.vec")
> >  [slice=vector-data]
> >    at 
> > org.apache.lucene.store.ByteBufferIndexInput.seek(ByteBufferIndexInput.java:255)
> >    at 
> > org.apache.lucene.store.ByteBufferIndexInput$MultiBufferImpl.seek(ByteBufferIndexInput.java:575)
> >    at 
> > org.apache.lucene.codecs.lucene90.Lucene90VectorReader$OffHeapVectorValues.vectorValue(Lucene90VectorReader.java:432)
> >    at org.apache.lucene.util.hnsw.HnswGraph.search(HnswGraph.java:118)
> >    at 
> > org.apache.lucene.codecs.lucene90.Lucene90VectorReader$OffHeapVectorValues.search(Lucene90VectorReader.java:409)
> >    at perf.KnnQuery$KnnWeight.scorer(KnnQuery.java:88)
> >    at org.apache.lucene.search.Weight.bulkScorer(Weight.java:166)
> >    at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:743)
> >    at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:533)
> >    at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:664)
> >   at 
> > org.apache.lucene.search.IndexSearcher.searchAfter(IndexSearcher.java:510)
> >    at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:520)
> >    at perf.SearchTask.go(SearchTask.java:263)
> >
> > Sorry about the long stack trace in an email - still not quite up to speed 
> > with etiquette on this mailing list, should I have attached a file instead?
> >
> > I have reproduced it 3 times on my machine, running the nightly benchmark's 
> > search benchmark with the competition.WIKI_MEDIUM_ALL source. It does not 
> > occur with e.g. the competition.WIKI_MEDIUM_10M source. The source of the 
> > competition file is in 
> > https://github.com/mikemccand/luceneutil/blob/master/src/python/competition.py.
> >  I run the indexing with only 1 thread - not sure if that matters.
> >
> > I'll happily provide more information regarding system setup etc. if that 
> > can help in figuring things out.
> >
> > best regards,
> > Anton Hägerstrand

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