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Robert Muir
Works at Elasticsearch
Attended Radford University
Lives in Reston, Virginia
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Robert Muir

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Don't use IBM's J9 JDK with #Lucene or #Elasticsearch  or #Solr : the #Lucene tests have hit this bug a number of times, but this is the first time I've seen a user impacted by it.  Fortunately the bug is so exotic (NullPointerException from a field that cannot possibly be null) that when it strikes we immediately know which JVM is in use!
My environment has 1 linux server installed elasticsearch 1.4.2 with default settings from rpm package. I use TransportClient to send requests to elasticsearch. I recently changed to use rpm package. It has been working fine for a couple of day. But today I saw the following errors when I ...
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Robert Muir

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Similar to the nightly #Lucene  indexing and performance tests I run to try to catch boiling-frog performance regressions , I've been running an analyzer test for some of the core analyzers, so we can spot unexpected changes in behavior and performance.  It looks like Lucene 4.9 will see some big analysis speedups, thanks to https://issues.apache.org/jira/browse/LUCENE-5638
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Copying bytes is hard... "The specific flaw exists within the usage of System.arraycopy. With the usage of this method, it is possible to disable the security manager and run code as privileged"

http://www.zerodayinitiative.com/advisories/ZDI-14-114/
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A new, simple and robust query parser is coming to Lucene, and it has some great qualities!

It supports the typical operators to create phrase queries, set precedence, specify and/or/not, prefix, etc., but each of them can be turned on or off, and it never throws an exception from mal-formed input (instead, it makes a "best effort" to create an appropriate query).
I would like to add a new simple QueryParser to Lucene that is designed to parse human-entered queries. This parser will operate on an entire entered query using a specified single field or a set of weighted fields (using term boost). All features/operations in this parser can be enabled or ...
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Robert Muir

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went to west virginia and back, submitted buzzwords talk, pushed out lucene/solr 4.2 release. sounds like a productive sunday in theory... but really just ripped off other people's work :)
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buzzwords talk, haha
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Robert Muir

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The buggy Java SE 7 release is only the latest misstep in a mounting litany of bad behavior
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The absolute worst tech company. 
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Robert Muir

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Very depressing, especially that graph.
For decades, the share of women majoring in computer science was rising. Then, in the 1980s, something changed.
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Yes, that's a good observation, but, the article didn't really point out whatever turned the tide about 1984. I find marketing alone not that great of a reason, there are examples of many things where women were excluded and took on the area anyway and excelled. I can't re-call a single teenage girl I knew then caring about computers. I was a bit older than 6 then, I was in my mid-teens, so I remember that time reasonably well.
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Robert Muir

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Lucene 4.8 vote underway: http://s.apache.org/xza

Some of my favorite features:

Reliability
- Checksum verification added to Lucene index files
- Index locking completely un@#$!ed, and new awesome stress test
- fsync() directory descriptor when the OS supports this
- Additional low-level checks to detect index corruption

Searching
- Rescoring/Reranking support: rerank by Query, Sort, Expression
- Ability to sort on multi-valued field (selectors like min/max/etc)
- Near-realtime autosuggest
- Early termination support for arbitrary Sort spec
- Faster query execution for nested Boolean queries
- More efficient results merging for pagination (e.g. distributed search)

Indexing
- Updatable binary docvalues fields
- Switch to Murmurhash for term hash (avoids common worst cases)
- Improvements to Turkish language analysis
- Reworked hunspell analysis: up to 50x faster and 100x less RAM

There is more, but you can just read the CHANGES.txt: http://people.apache.org/~uschindler/staging_area/lucene-solr-4.8.0-RC2-rev1589874/lucene/changes/Changes.html
Message view, « Date » · « Thread ». Top, « Date » · « Thread ». From, "Uwe Schindler" <...@thetaphi.de>. Subject, [VOTE] Lucene/Solr 4.8.0 RC2. Date, Thu, 24 Apr 2014 21:54:09 GMT. Hi, I prepared a second release candidate of Lucene and Solr 4.8.0. The artifacts can be found here: ...
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Message view, « Date » · « Thread ». Top, « Date » · « Thread ». From, Robert Muir . Subject, [ANNOUNCE] Apache Lucene 4.0 released. Date, Fri, 12 Oct 2012 08:10:23 GMT. October 12 2012, Apache Lucene...
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Work
Occupation
ghostbuster
Employment
  • Elasticsearch
    ghostbuster, 2014 - present
  • A9.com
    ghostbuster, 2012 - 2014
  • Lucid Imagination
    ghostbuster, 2011 - 2012
  • Dauntless > Abraxas > Ntrepid
    ghostbuster, 2006 - 2011
  • Lockheed Martin
    ghostbuster, 2003 - 2006
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Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Reston, Virginia
Previously
New Bern, North Carolina
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apache committer

a9 employee
Education
  • Radford University
    CS, 2000 - 2003
  • Johns Hopkins University
    CS, 2003 - 2006
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