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DBMS Musings

Tuesday, October 31, 2017. Apache Arrow vs. Parquet and ORC: Do we really need a third Apache project for columnar data representation? Storage layout difference between row- and column-oriented formats. Surprisingly, the row-store and the column-store perform almost identically, despite the query being ideally suited for a column-store. The reason why this is the case is that I turned off all CPU optimizations (. Such as vectorization / SIMD processing. On the other hand, if I turn on CPU optimizations (.

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Tuesday, October 31, 2017. Apache Arrow vs. Parquet and ORC: Do we really need a third Apache project for columnar data representation? Storage layout difference between row- and column-oriented formats. Surprisingly, the row-store and the column-store perform almost identically, despite the query being ideally suited for a column-store. The reason why this is the case is that I turned off all CPU optimizations (. Such as vectorization / SIMD processing. On the other hand, if I turn on CPU optimizations (.

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DBMS Musings | dbmsmusings.blogspot.com Reviews

https://dbmsmusings.blogspot.com

Tuesday, October 31, 2017. Apache Arrow vs. Parquet and ORC: Do we really need a third Apache project for columnar data representation? Storage layout difference between row- and column-oriented formats. Surprisingly, the row-store and the column-store perform almost identically, despite the query being ideally suited for a column-store. The reason why this is the case is that I turned off all CPU optimizations (. Such as vectorization / SIMD processing. On the other hand, if I turn on CPU optimizations (.

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dbmsmusings.blogspot.com

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DBMS Musings: Is Upstart the right way to get college student start-ups funded?

http://dbmsmusings.blogspot.com/2012/11/is-upstart-right-way-to-get-college.html

Wednesday, November 7, 2012. Is Upstart the right way to get college student start-ups funded? In 2010, the movie “ The Social Network. Is certainly no secret around Yale, and partly because I live on Yale’s campus and part of my job in this capacity is to serve as an adviser and mentor to undergraduates. Therefore, when I first heard of Upstart. November 7, 2012 at 10:03 AM. Interesting. Following this line of reasoning, if youre a student raising money for a startup, you should actually make your i...

2

DBMS Musings: The problems with ACID, and how to fix them without going NoSQL

http://dbmsmusings.blogspot.com/2010/08/problems-with-acid-and-how-to-fix-them.html

Tuesday, August 31, 2010. The problems with ACID, and how to fix them without going NoSQL. This post is coauthored by. It is a poorly kept secret that NoSQL is not really about eliminating SQL from database systems (e.g.,. Rather, systems such as. And a host of other key-value stores),. ACID, scalability and replication. For large transactional applications, it is well known that scaling out on commodity hardware is far cheaper than scaling up on high-end servers. Most of the largest transactional ap...

3

DBMS Musings: IEEE Computer issue on the CAP Theorem

http://dbmsmusings.blogspot.com/2012/10/ieee-computer-issue-on-cap-theorem.html

Monday, October 29, 2012. IEEE Computer issue on the CAP Theorem. Due to Hurricane Sandy, Yale gave me a day off from teaching today and I have finally been able to get to a few things on my "to-do" list. One of them is to write a blog post about the IEEE Computer CAP Retrospective edition and make my paper that appeared inside of it publicly available. Earlier this year, the IEEE Computer magazine came out with an issue. When citing this work (you can stop citing a blog post! The fourth article is from ...

4

DBMS Musings: Problems with CAP, and Yahoo’s little known NoSQL system

http://dbmsmusings.blogspot.com/2010/04/problems-with-cap-and-yahoos-little.html

Friday, April 23, 2010. Problems with CAP, and Yahoo’s little known NoSQL system. My problems with CAP. CAP is generally described as the following: when you build a distributed system, of three desirable properties you want in your system: consistency, availability, and tolerance of network partitions, you can only choose two. 8221; But what if there is a network partition? What does “not tolerant” mean? Identical. So in reality, there are only two types of systems: CP/CA and AP. I.e., i...Having three ...

5

DBMS Musings: Analysis of the "MapReduce Online" paper

http://dbmsmusings.blogspot.com/2009/10/analysis-of-mapreduce-online-paper.html

Thursday, October 22, 2009. Analysis of the "MapReduce Online" paper. I recently came across a paper entitled “ MapReduce. Written by Tyson Condie. Neil Conway, Peter Alvaro, Joe Hellerstein. And Russell Sears at Berkeley (University of California). Since I’m very interested in Hadoop. Related research (see my group’s work on HadoopDB. For interactive queries, and since Hadoop. The authors argue that since MapReduce. 8217;s (and therefore Hadoop. Jobs This main problem has two subproblems. From upstream ...

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brent ozar – IgnacioSalom.com

https://ignaciosalom.com/tag/brent-ozar

Posts about SQL Server and other technology subjects. I was born in Barranquilla, Colombia in 1975. When I was 17 I moved to Curacao where I lived 10 years and then move to The Hague, The Netherlands. I speak 4 languages (Dutch, English, Papiamento and Spanish). I hope you enjoy my blog and if you want to send a question, just drop me a mail at ignacio.salom@cenlinea.com or ignacio@ccgroep.com. SQL DBA Essential Links. Join 13 other followers. Have you checked your SQL Server CPU speed lately? Blog at Wo...

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SQL Server 2008 performance dashboard and SQL Server 2012 performance dashboard – IgnacioSalom.com

https://ignaciosalom.com/2013/02/12/sql-server-2008-performance-dashboard-and-sql-server-2012-performance-dashboard

Posts about SQL Server and other technology subjects. I was born in Barranquilla, Colombia in 1975. When I was 17 I moved to Curacao where I lived 10 years and then move to The Hague, The Netherlands. I speak 4 languages (Dutch, English, Papiamento and Spanish). I hope you enjoy my blog and if you want to send a question, just drop me a mail at ignacio.salom@cenlinea.com or ignacio@ccgroep.com. SQL DBA Essential Links. Join 13 other followers. And http:/ sqlserverfinebuild.codeplex.com/wikipage? Fill in ...

ignaciosalom.com

cpu speed – IgnacioSalom.com

https://ignaciosalom.com/tag/cpu-speed

Posts about SQL Server and other technology subjects. I was born in Barranquilla, Colombia in 1975. When I was 17 I moved to Curacao where I lived 10 years and then move to The Hague, The Netherlands. I speak 4 languages (Dutch, English, Papiamento and Spanish). I hope you enjoy my blog and if you want to send a question, just drop me a mail at ignacio.salom@cenlinea.com or ignacio@ccgroep.com. SQL DBA Essential Links. Join 13 other followers. Have you checked your SQL Server CPU speed lately?

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Data Warehousing | Merv Adrian's IT Market Strategy

https://itmarketstrategy.com/category/data-warehousing

Merv Adrian's IT Market Strategy. IT Industry trends: technology, products, competition and the research industry. Vendor image and communications. Prediction Is Hard Especially About the Future. December 29, 2014. OK, I admit it I stole the title from a much smarter man. I thought that man was Yogi Berra, but maybe not more about that at the end of this post. 8212; more on Gartner blog —. Filed under Data Lake. Tagged with data lake. Hadoop Investments Continue: Teradata, HP Jockey For Position. A brief...

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Disclosure Policy | Merv Adrian's IT Market Strategy

https://itmarketstrategy.com/disclosure-policy

Merv Adrian's IT Market Strategy. IT Industry trends: technology, products, competition and the research industry. Vendor image and communications. Below is a partial list of companies and events from whom we received compensation for consulting or speeches. For questions about this disclosure policy, please send an email to merv@itmarketstrategy.com. Leave a Reply Cancel reply. Enter your comment here. Fill in your details below or click an icon to log in:. Address never made public). IBM's Optim W...

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Merv Adrian | Merv Adrian's IT Market Strategy

https://itmarketstrategy.com/author/mervadrian

Merv Adrian's IT Market Strategy. IT Industry trends: technology, products, competition and the research industry. Vendor image and communications. Hadoop Project Commercial Support Tracker July 2016. July 30, 2016. There are now 15 projects supported by all 5 distributors I track, and several have had new releases since April. Kafka is the newest addition, and I believe the remaining 4-supporter offerings, Mahout and Hue, will remain unsupported by IBM, who has its own alternatives. July 13, 2016. In th...

itmarketstrategy.com

Hadoop | Merv Adrian's IT Market Strategy

https://itmarketstrategy.com/category/hadoop

Merv Adrian's IT Market Strategy. IT Industry trends: technology, products, competition and the research industry. Vendor image and communications. Hadoop Project Commercial Support Tracker July 2016. July 30, 2016. There are now 15 projects supported by all 5 distributors I track, and several have had new releases since April. Kafka is the newest addition, and I believe the remaining 4-supporter offerings, Mahout and Hue, will remain unsupported by IBM, who has its own alternatives. April 27, 2016.

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IBM | Merv Adrian's IT Market Strategy

https://itmarketstrategy.com/tag/ibm

Merv Adrian's IT Market Strategy. IT Industry trends: technology, products, competition and the research industry. Vendor image and communications. Hadoop Project Commercial Support Tracker July 2016. July 30, 2016. There are now 15 projects supported by all 5 distributors I track, and several have had new releases since April. Kafka is the newest addition, and I believe the remaining 4-supporter offerings, Mahout and Hue, will remain unsupported by IBM, who has its own alternatives. April 27, 2016.

itmarketstrategy.com

Teradata | Merv Adrian's IT Market Strategy

https://itmarketstrategy.com/tag/teradata

Merv Adrian's IT Market Strategy. IT Industry trends: technology, products, competition and the research industry. Vendor image and communications. Hadoop Projects Supported By Only One Distribution. August 8, 2015. And What’s Supported? I list 10 supported by only one: Atlas, Calcite, Crunch, Drill, Falcon, Kite, LLAMA, Lucene, Phoenix and Presto. Let’s look at them a little more. Filed under Industry trends. Which SQL on Hadoop? Poll Still Says “Whatever” But DBMS Providers Gain. February 22, 2015.

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White Papers | Merv Adrian's IT Market Strategy

https://itmarketstrategy.com/white-papers-2

Merv Adrian's IT Market Strategy. IT Industry trends: technology, products, competition and the research industry. Vendor image and communications. From time to time, IT Market Strategy agrees to create white papers under contract to vendors. I follow carefully crafted guidelines for this work. Essentially it boils down to this:. I don’t compare products for pay. I don’t endorse products for pay. I reserve the right to be critical. I identify paid work. With that out of the way, here are some of my recen...

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Wednesday, July 9, 2008. A database is a collection of stored operational data used by various applications and/or users by some particular enterprise or by a set of outside authorized applications and authorized users. 8211;A sequence of characters stored in computer memory or storage. 8211;Interpreted sequence of characters stored in computer memory or storage. 8211;Interpreted set of objects. 8211; Database supports a concurrent access to the data. File Management System Problems :. 8211; Data items a...

dbmsmusings.blogspot.com

DBMS Musings

Tuesday, October 31, 2017. Apache Arrow vs. Parquet and ORC: Do we really need a third Apache project for columnar data representation? Storage layout difference between row- and column-oriented formats. Surprisingly, the row-store and the column-store perform almost identically, despite the query being ideally suited for a column-store. The reason why this is the case is that I turned off all CPU optimizations (. Such as vectorization / SIMD processing. On the other hand, if I turn on CPU optimizations (.

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