Hello,
Thanks for reply, I can find first document from group using non
grouping search.
To be sure about this I deleted index and indexed only first 100 groups
which gives around 2300 documents and I see the problem on at least half
of groups. No problem in finding first documents normally.
I noticed this problem first when I had indexed few thousands groups.
When I index everything(15k groups, which means around 200k documents,
commit every 500 groups) the problem is no more or at least I can't find
any group with non first document in scoreDocs[0]. I'm reindexing it
since morning, I will reindex it once again to be sure about this one.
I'm not Lucene internals expert, but maybe this problem is somehow
connected to segment merging?
Some additional info:
I'm using Lucene 3.5.0.
Sort:
public final static Sort SORT_ID = new Sort(new SortField("id_n",
SortField.INT));
Adding field to document:
doc.add(new NumericField("id_n", Store.NO,
true).setIntValue(rs.getInt(1)));
(I checked how it works with Store.YES, it didn't change anything.)
I also call searcher.setDefaultFieldSortScoring(true, true) before
grouping search.
Calling optimize() also didn't help(but anyway I wouldn't use this
method even if it was the solution for this problem )
Index writer config has default settings.
For now I'm using workaround, but I'm looking forward to finding
solution of this problem.
W dniu 2012-03-08 12:12, Michael McCandless pisze:
Hmm... that doesn't sound good.
Is the issue repeatable once it happens? And, when it happens, can
you verify that the index is corrrect (eg, the missing doc is
retrievable by non-grouped searches)? This way we can isolate the
issue to the search-side.
Can you boil it down to a small test case?
