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Robert Haas
Works at EnterpriseDB
Attended Harvard University
Lives in New Jersey
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Robert Haas

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So, I'm going to Postgres Vision in San Francisco October 11-13th. Other PostgreSQL people who will be there include: Magnus Hagander, Michael Meskes, Oleg Bartunov, Alexander Korotkov, Bruce Momjian, Dave Page, and (at least briefly) Andres Freund. There will be lots of business folks there too. I'm told that I have a personal discount code of RH10offPV which you can use to get 10% off when registering. Come see me talk! I hate talking to an empty room...
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Robert Haas

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PostgreSQL Regression Test Coverage
This evening, I ran the PostgreSQL regression tests (make check-world) on master and on each supported back-branch three times on hydra, a community test machine provided by IBM.  Here are the median results: 9.1 - 3m49.942s 9.2 - 5m17.278s 9.3 - 6m36.609s ...
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Robert Haas

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Parallel Query Is Getting Better And Better
Back in early November, I reported that the first version of parallel sequential scan had been committed to PostgreSQL 9.6.  I'm pleased to report that a number of significant enhancements have been made since then.  Of those, the two that are by the far th...
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Robert Haas

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PostgreSQL Past, Present, and Future: Moving The Goalposts
It's nice to see that PostgreSQL 9.5 is finally released!  There are a number of blog posts out about that already, not to mention stories in InfoWorld , V3 , and a host of other publications .  Of all the publicity, though, I think my favorite piece is a r...
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Robert Haas

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PostgreSQL Shutdown
PostgreSQL has three shutdown modes: smart, fast, and immediate.  For many years, the default has been "smart", but Bruce Momjian has just committed a patch to change the default to "fast" for PostgreSQL 9.5.  In my opinion, this is a good thing; I have com...
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Parallelism Update
It's been over a year since I last blogged about parallelism , so I think I'm past due for an update, especially because some exciting things are happening. First, Amit Kapila has published a draft patch for parallel sequential scan .  Many things remain to...
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Robert Haas

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Uber's move away from PostgreSQL
Last week, a blog post by an Uber engineer explained why Uber chose to move from PostgreSQL to MySQL . This article was widely reported and discussed within the PostgreSQL community, with many users and
developers expressing the clear sentiment that Uber ha...
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Robert Haas

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PostgreSQL 9.6 with Parallel Query vs. TPC-H
I decided to try out parallel query, as implemented in PostgreSQL 9.6devel, on the TPC-H queries.  To do this, I followed the directions at https://github.com/tvondra/pg_tpch - thanks to Tomas Vondra for those instructions.  I did the test on an IBM POWER7 ...
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Robert Haas

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No More Full-Table Vacuums
I just committed a very important patch to PostgreSQL.  The short summary for the patch is " Don't vacuum all-frozen pages. " and it follows up on a patch I committed last week, whose short summary was " Change the format of the VM fork to add a second bit ...
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Robert Haas

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Planning Parallel and Distributed Queries
I have been somewhat lax about blogging for the last six months or so due to having been even busier than usual with various projects, and I think that's likely to continue for at least the next month or two as I work to finish the first version of parallel...
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Robert Haas

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Parallel Sequential Scan for PostgreSQL 9.5
Amit Kapila and I have been working very hard to make parallel sequential scan ready to commit to PostgreSQL 9.5.  It is not all there yet, but we are making very good progress.  I'm very grateful to everyone in the PostgreSQL community who has helped us wi...
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Is there a git repo available that contains your work? That would make it easier to follow with testing.
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Robert Haas

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Memory Matters
Database performance and hardware selection are complicated topics, and a great deal has been written on that topic over the years by many very smart people, like Greg Smith, who wrote a whole book about PostgreSQL performance .  In many cases, the answers ...
Database performance and hardware selection are complicated topics, and a great deal has been written on that topic over the years by many very smart people, like Greg Smith, who wrote a whole book about PostgreSQL performanc...
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PostgreSQL Major Contributor, Committer; Chief Architect, Database Server @ EnterpriseDB
Education
  • Harvard University
    Computer Science, 1994 - 1998
Basic Information
Gender
Male
Work
Employment
  • EnterpriseDB
    Database Architect, 2010 - present
  • SNiP LiNK, LLC
    Director of Business Engineering, 2007 - 2010
  • Dyntek
    Senior Systems Analyst, 2006 - 2007
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
New Jersey
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I have visited Pune twice now and attended this Church both times. It is a nice place to go to Mass, and the second time was the Church's patronal feast, so the bishop came to say Mass.
Public - 2 months ago
reviewed 2 months ago
The service here is friendly and fast, and the place is never crowded. Our whole family enjoys it.
Food: Very GoodDecor: Very GoodService: Excellent
Public - 3 years ago
reviewed 3 years ago
3 reviews
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The Westmont Ace has several people on staff who are extremely knowledgeable and helpful, and the service is good all around. Highly recommended!
Public - 8 years ago
reviewed 8 years ago