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Nadav Har'El commented on LUCENE-504:
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Hi Uwe, I think that even though PriorityQueue
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Nadav Har'El commented on LUCENE-1899:
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Hi Shai, I guess you're right that if there's
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Nadav Har'El commented on LUCENE-1899:
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Yes, you're right, 12.5%. Or actually, 11
Reporter: Nadav Har'El
Priority: Minor
Hi, I found a potentially serious efficiency problem with OpenBitSet.
One typical (I think) way to build a bit set is to set() the bits one by one -
e.g., have a HitCollector set() the bit for each matching document.
The underlying array
: this wouldn't
proclude us from offering a bloated jar containing everything under the
sun)
Again, I wholeheartedly agree.
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Nadav Har'El| Wednesday, Apr 1 2009, 7 Nisan 5769
IBM Haifa Research Lab
be final.
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Nadav Har'El|Sunday, Mar 22 2009, 26 Adar 5769
IBM Haifa Research Lab |-
|Did you sleep well? No, I made a
http://nadav.harel.org.il |couple of mistakes
()
followed by a new open(), but a person reading this javadoc wouldn't know that.
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IBM Haifa Research Lab |-
|Hi! I'm a signature
not
be backward compatible (although, for 3.0 we may decide that this is
not absolutely necessary).
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Nadav Har'El| Sunday, Dec 14 2008, 18 Kislev 5769
IBM Haifa Research Lab
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Nadav Har'El commented on LUCENE-1470:
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Hi, I just wanted to comment that a similar
this API is not at all inconsistent - maybe it is just a bit redundant
and a bit confusing or not documented well enough (although I don't think
the latter is true).
Nadav.
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Nadav Har'El|Tuesday, Nov 11 2008, 14 Heshvan 5769
IBM Haifa Research Lab
behavior as an option.
Anyway, this is just my opinion (not backed by any hard research or
experimentation), so it might be wrong.
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Nadav Har'El| Monday, Oct 13 2008, 14 Tishri 5769
IBM Haifa Research Lab
,
Nadav.
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Nadav Har'El| Sunday, Oct 5 2008, 6 Tishri 5769
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. Searching with a
Filter is now more efficient: now the filter is applied to a
document before scoring is done.
Thanks, it's better I think.
Maybe it even deserves its own bullet - I don't think there's too much
connection between the two improvements?
Thanks,
Nadav.
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Nadav Har'El
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https://issues.apache.org/jira/browse/LUCENE-1382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=12630561#action_12630561
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Nadav Har'El commented on LUCENE-1382:
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Hi Mike,
If you add this feature, I suggest
want to
develop apps with a small foot print.
I agree that this is an important goal.
At one point there was even talk of refactoring additional code out of the
core and into a contrib (this was already done with some analyzers when
Lucene became a TLP)
--
Nadav Har'El
, database data, or whatever).
Does anyone disagree? Is there a reason why this change should not be done?
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Nadav Har'El| Wednesday, Aug 13 2008, 12 Av 5768
IBM Haifa Research Lab
are still quite common, so I think this is a problem we should solve properly.
Thanks,
Nadav.
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Nadav Har'El|Wednesday, Jun 25 2008, 22 Sivan 5768
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Nadav Har'El commented on LUCENE-1314:
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At first glance, my opinion was that adding
but not of J2SE, so you need to include this as well if you want to
use the servlet API). And that's it.
I'm sure that similar tiny Web Servers can also be found on the Web, but if
there's interest, I can see about publishing mine.
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Nadav Har'El| Sunday, Apr 27
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Nadav Har'El commented on LUCENE-954:
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I hate to rain on the parade, but maybe instead
support the necessary calls (either a
deleteDocuments(Query) or a deleteDocuments(int docid) call), but I don't
see why this can't be fixed without adding new concepts (like UID) to the
index. Or maybe I'm missing something?
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Nadav Har'El| Wednesday, Jan 23 2008, 17
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Nadav Har'El commented on LUCENE-997:
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I'd like to add my 2 cents on this issue.
The more I use Lucene
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Nadav Har'El commented on LUCENE-1088:
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Michael, I agree - the most important fix was to make heap protected
, Ronny Lempel and Aya Soffer, SIGIR 2004,
http://einat.webir.org/SIGIR_2004_Trels_p10-amitay.pdf
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Nadav Har'El| Tuesday, Jun 26 2007, 10 Tammuz 5767
IBM Haifa Research Lab
be great.
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Nadav Har'El| Sunday, May 13 2007, 25 Iyyar 5767
IBM Haifa Research Lab |-
|How do you get holy water? Boil the hell
http://nadav.harel.org.il |out
require significant system resources to add benefit.
See my comments above on why multiple concurrent merges might be necessary,
depending on what the benefit you were aiming at.
Thanks,
Nadav.
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Nadav Har'El| Wednesday, Feb 21 2007, 3 Adar 5767
IBM Haifa Research
as a ... file system on stderr, it's not NFS.
If the result on stdout has one line, it's NFS.
It's (very) ugly, but it can work.
Of course, NFS is not the only network file system out there.
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Nadav Har'El| Monday, Jan 22 2007, 3 Shevat 5767
IBM Haifa Research Lab
does make sense, instead of repeating the
same code and/or functionality in both IndexReader and IndexWriter.
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Phone +972-523-790466, ICQ
(basically, the list of categories that this document
belongs to).
I'm not saying this is the best way to do it, and certainly not the cleanest,
but it's just one of the things that payloads enable you to do.
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Nadav Har'El|Wednesday, Jan 10 2007, 20 Tevet 5767
IBM
and requires
writing some sort of new Analyzer - one that will do the regular analysis
that I want for the regulr fields, and add the payload to the one specific
field that lists the facets.
Am I understanding correctly? Or am I missing a better way to do this?
Thanks,
Nadav.
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Nadav Har'El
, and recommending the TopDocs
alternatives instead?
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Nadav Har'El| Sunday, Nov 26 2006, 5 Kislev 5767
IBM Haifa Research Lab |-
|God created the world out of nothing, but
http
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http://issues.apache.org/jira/browse/LUCENE-695?page=comments#action_12444903 ]
Nadav Har'El commented on LUCENE-695:
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If given a null array? Is this ever done in Lucene? Which should be fixed,
the testcase or the code?
I don't know
: Store
Affects Versions: 2.0.0
Reporter: Nadav Har'El
Priority: Minor
During a profiling session, I discovered that BufferedIndexInput.readBytes(),
the function which reads a bunch of bytes from an index, is very inefficient
in many cases. It is efficient for one or two
[ http://issues.apache.org/jira/browse/LUCENE-695?page=all ]
Nadav Har'El updated LUCENE-695:
Attachment: readbytes.patch
The patch, which includes the change to BufferedIndexInput.readBytes(), and a
new unit test for that class.
Improve
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http://issues.apache.org/jira/browse/LUCENE-695?page=comments#action_12444322 ]
Nadav Har'El commented on LUCENE-695:
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Sorry, I didn't notice that my fix broke this unit test. Thanks for catching
that.
What is happening is interesting
comments, or knows of any reason why the existing code
was so inefficient (while the code in BufferedIndexOutput makes more sense),
I'd love to hear. If a committer will agree to commit this change, even
better :-) When JIRA is back online, I'll put the patches there too.
Thanks,
Nadav Har'El
this capability in an
application which indexed emails and attachments, and when an email document
was deleted I also had to delete the attached documents (listed in a field
of the email) from the index.
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Nadav Har'El| Friday, Jul 7 2006, 11 Tammuz 5766
IBM Haifa Research Lab
this is possible, because the ideas you raised (adding
weight to Spans or spans to Scorer) will require significant changes to
many of Lucene's existing query types, or duplication of these query
types, something which I'd rather avoid if possible.
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Nadav Har'El| Thursday, Jul 6
[ http://issues.apache.org/jira/browse/LUCENE-623?page=all ]
Nadav Har'El updated LUCENE-623:
Attachment: ramdirectory.diff
I propose a trivial patch, which does two very simple things:
1. RAMDirectory.close(), instead of being a no-op, sets files=null
this
with fractions like 1.5 :-)
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Nadav Har'El| Wednesday, Jul 5 2006, 9 Tammuz 5766
IBM Haifa Research Lab |-
|Why do we drive on a parkway and park on
http://nadav.harel.org.il
. A better solution
would be like you said, to create a modified version of BooleanQuery's
scoring.
--
Nadav Har'El| Friday, Jun 30 2006, 4 Tammuz 5766
IBM Haifa Research Lab |-
|Give Yogi
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http://issues.apache.org/jira/browse/LUCENE-504?page=comments#action_12418446 ]
Nadav Har'El commented on LUCENE-504:
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Hi Otis, you did not comment on my patch (fuzzyquery.patch), which I think
solves your objections to Doron's previous patch. Do you
in a query parser expression.
The default limit is 1024, but you can change it with
BooleanQuery.setMaxClauseCount()
Note, however, that if you really use such huge queries, they may be
extremely slow.
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IBM
.
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|Unix is user friendly - it's just picky
http://nadav.harel.org.il |about its friends
thought as to whether we
should continue demonstrating the use of Hits (rather than TopDocs) in most
Lucene examples, and whether perhaps, the Hits API should be deprecated.
Nadav.
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Nadav Har'El| Tuesday, Jun 27 2006, 2 Tammuz 5766
IBM Haifa Research Lab
? A
Similarity? Or what?
I think this is an interesting topic.
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+972-4-829-6326
Grant Ingersoll
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[ http://issues.apache.org/jira/browse/LUCENE-504?page=all ]
Nadav Har'El updated LUCENE-504:
Attachment: fuzzyquery.patch
This is my proposed patch described above.
FuzzyQuery produces a java.lang.NegativeArraySizeException
is in. A document can
either be, or not be, in a category, but there is no significance
in the order of these categories in a document's list.
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previously)
and the rest end up not finding an old document and not deleting
anything. I expect this benchmark to show an even greater improvment
of your approach over the naive IndexModifier.
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Nadav Har'El commented on LUCENE-554:
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Hi Otis, sorry about lingering with this patch (I've been very busy, not to
mention a daughter two weeks ago :-) I still want
Versions: 1.9
Reporter: Nadav Har'El
Priority: Minor
Lucene's indexing is expected to be reasonably tolerant to computer crashes or
the indexing process being killed. By reasonably tolerant, I mean that it is ok
to lose a few documents (those currently buffered in memory), or have
it.
And of course, the This replacement should be atomic comment in
Directory.renameFile() must be revised.
If what I'm saying sounds logical, I'll open a JIRA entry and
propose a patch.
Is anyone aware of other crash in-tolerance issues in Lucene
that I should consider working on?
Thanks,
Nadav.
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Nadav
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http://issues.apache.org/jira/browse/LUCENE-130?page=comments#action_12373847 ]
Nadav Har'El commented on LUCENE-130:
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toString(field) works very well, if you understand what it does. Perhaps the
javadoc isn't explicit enough on what it does and need
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http://issues.apache.org/jira/browse/LUCENE-322?page=comments#action_12373849 ]
Nadav Har'El commented on LUCENE-322:
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I wonder, is this change at all necessary? After all, we have the
IndexSearcher().getIndexReader() function, which returns
constructor or
convenience
function that will do the right thing for opening a potentially-existing
index.
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