Comments for thattommyhall.com

Comment on Building A Backblaze Storage Pod by Roger Pickering

Roger Pickering — Fri, 13 Jan 2012 17:17:52 +0000

Thanks so much for the article! I am very much interested in this system, but need to know if it will work as is with Solaris. I very much like the ZFS fs and would use this in a tiered system so my fast secondary tier would be an Oracle data server.

One, perhaps dumb, question, assuming it works with Solaris, is: can I put several boxes into one ZFS pool? That would allow me to have files much larger than the 120 TB otherwise (assuming RAIDZ2 with two spares and one SSD cache).

Thanks in advance!

Roger

Comment on Day 700 of 101 goals in 1001 days by Adrian

Adrian — Fri, 23 Dec 2011 19:14:06 +0000

I read Alex’s comment as “Taser photos”. What’s wrong with me?

Comment on Building A Backblaze Storage Pod by syle

syle — Fri, 23 Dec 2011 13:55:14 +0000

Isn’t that the point to begin with, not to have to have the pain to have to login to a box and “figure out what slot”, then “figure out what command to run on that slot”,
should be able to pull it out, stick new one in, and have it do this automatically.

Comment on Day 700 of 101 goals in 1001 days by Alex

Alex — Thu, 22 Dec 2011 20:15:53 +0000

The teaser photos look great, looking forward to seeing more.

Comment on Creating Something (In fact everything) out of nothing, Twice by Ankit Jain

Ankit Jain — Sat, 24 Sep 2011 05:48:27 +0000

I was reading up on the same. Its fascinating.

You could also look up on “Church numerals”. The example from Set Theory mimics the lambda functions used in Church numerals.

Thanks.

Comment on Building A Backblaze Storage Pod by Butch

Butch — Thu, 21 Jul 2011 20:23:10 +0000

With regards to ZFS not handling drive removal well, that may be more a driver support issue at the time. I’ve used ZFS on several Solaris systems with known supported controllers and have had no such issues. You may have to run cfgadm -C configure on the specific “slot” to reconfigure the drive first, but as long as the OS can communicate properly with the controller there shouldn’t be any problems.

Comment on Summer Fun by thattommyhall.com » Walking The Great Glen Way

thattommyhall.com » Walking The Great Glen Way — Sun, 26 Jun 2011 21:23:02 +0000

[...] did it ultralight, using kit I have blogged about before. My mate Ben got well into expedition planning mode and prepared an optimal food mix for the trip [...]

Comment on Berlin Buzzwords by tom

tom — Fri, 24 Jun 2011 17:15:26 +0000

First 5 are up now
http://berlinbuzzwords.de/content/first-5-videos

Comment on Berlin Buzzwords by Bruce

Bruce — Thu, 09 Jun 2011 12:39:05 +0000

Are there videos of any of the talks? They all look great.

I found the link to the slides here: http://berlinbuzzwords.de/node/748

Comment on Compressing Text Tables In Hive by Martin

Martin — Wed, 08 Jun 2011 14:30:35 +0000

Hi,

I tried a very simple version – compresing just one partition:

SET … ; — exactly like your solution

INSERT OVERWRITE TABLE logs
PARTITION (dt=’2011-06-07′)
SELECT user,time,query
FROM logs
WHERE dt=’2011-06-07′;

In hive-site.xml I enabled the codecs. In the job config in Jobtracker I see:

io.compression.codecs = org.apache.hadoop.io.compress.DefaultCodec,org.apache.hadoop.io.compress.GzipCodec,org.apache.hadoop.io.compress.BZip2Codec

So codecs should be OK.

I also tried the seqfile approach, which also doesn’t work (like it didn’t work for you). For me, both approaches just results in the file contents concatenated into one file, “compressed” to some binary data in case of seqfile, but always larger than the sum of original files.

I posted a question to the mailing list.

Comment on Compressing Text Tables In Hive by tom

tom — Mon, 06 Jun 2011 23:39:49 +0000

Which did you try? Have you enabled the codecs in the site.xml file?

Comment on Compressing Text Tables In Hive by Martin

Martin — Mon, 06 Jun 2011 17:56:35 +0000

Hi Tom,

this ran without errors, but a strange thing is that the files are actually not compressed. When I look in the Hive warehouse files, they contain multiple original files concatenated together but still in plain text.

Comment on Running –repair on MongoDB via Upstart by Andrew Nesbitt

Andrew Nesbitt — Fri, 03 Jun 2011 15:53:04 +0000

I could kiss you!

Comment on 101 goals in 1001 days – Day 400 Update by AP

AP — Thu, 21 Apr 2011 21:34:45 +0000

I’d be curious to know why you set to work only 100 days in a year, if that makes you feel a slacker or a free person, if you feel you are going to fall behind as your career and skillset going part-time and if you see that as a temporary thing or the way things are going to be beyond the 1000 days. (by the way, “Via Ferrata” is the actual spelling of that thing)

Comment on Visualising Tommy by AP

AP — Wed, 09 Mar 2011 22:36:34 +0000

I use a combination of google bookmarks, a subset of which gets copied from time to time to a list. The list has a public page but not a feed, so I use page2rss to get a feed out of it. Watch out that you need to get the de-ajaxized version of the page to page2rss. Very complicated, but the integration of bookmarks with search is my addiction. Another possibility is pinball.in, but sites with sign up fees and not monthly fees tend to disappear into black holes as soon as growth stops.

Comment on 101 goals in 1001 days – Day 400 Update by Joe

Joe — Tue, 01 Mar 2011 23:35:54 +0000

I’d be interested in joining you in the following (listed in decreasing likelihood of actually happening):

Stand up course
Edinburgh Festival
Wine Tasting
Paraglide
Skydiving
See Northern Lights
Safari
Mountain Climbing

Love this idea, by the way. I will be making my own list.

Comment on 101 goals in 1001 days – Day 400 Update by Conrad

Conrad — Sun, 27 Feb 2011 19:32:50 +0000

Well done on the 3 months without cheese mate. I know I would have struggled with that. I’m a sucker for a good cheese ploughmans.

Comment on Making Lemon Curd by thattommyhall.com » 101 goals in 1001 days – Day 400 Update

thattommyhall.com » 101 goals in 1001 days – Day 400 Update — Sun, 27 Feb 2011 18:11:50 +0000

[...] all Dennett books 15, Proofread for Project Guttenburg 48, Create a Backblaze storage pod 53, Make Jam 66, Via Feratta in Italy 78, Learn to use Emacs I suppose you can never fully learn it but I do use [...]

Comment on Signals In Ruby / “rescue Exception” considered harmful by Tweets that mention thattommyhall.com » Signals In Ruby / “rescue Exception” considered harmful -- Topsy.com

Thu, 24 Feb 2011 20:31:47 +0000

[...] This post was mentioned on Twitter by Paul Ingles, thattommyhall. thattommyhall said: New post: Signals In Ruby / "rescue Exception" considered harmful http://bit.ly/h4U5wF [...]

Comment on Running Any Executable As A Windows Service (Ruby / Sinatra) by tom

tom — Thu, 17 Feb 2011 14:17:43 +0000

@Luis, thanks for the comment. Our app is insanely simple so I am not too worried but did not actually know that so will have to keep it in mind in future.

Comment on Running Any Executable As A Windows Service (Ruby / Sinatra) by Luis Lavena

Luis Lavena — Mon, 14 Feb 2011 14:03:15 +0000

Hello,

Thank you for sharing!

One thing to mention about srvany.exe is that it kills the Ruby process when “net stop” is invoked, it doesn’t terminate it properly (like sending Ctrl+C or Ctrl+Pause)

This could lead to broken files or lost queries in case of requests been processed.

There are other tools in the market, but sadly, not free.

I’ve suggested someone port the work done with mongrel_service to use thin, so it can host any rack based application.

Cheers.

Comment on 101 Goals – 100 Day Update by thattommyhall.com » 2010 Retrospective

thattommyhall.com » 2010 Retrospective — Sat, 08 Jan 2011 17:54:17 +0000

[...] There is no new resolutions for 2010, I will be reporting on the 101 goals in 1001 days [...]

Comment on Beautiful Berlin by thattommyhall.com » 2010 Retrospective

thattommyhall.com » 2010 Retrospective — Sat, 08 Jan 2011 17:54:02 +0000

[...] Italy, go to Oklahoma for a friends wedding followed by a visit to two ancestral puebloan sites, Berlin, Paris, Vegas and Egypt. I feel privileged to have the opportunity to have done all this and am [...]

Comment on Using R on Hadoop with Rhipe by thattommyhall.com » Visualising Tommy

thattommyhall.com » Visualising Tommy — Sun, 19 Dec 2010 16:20:25 +0000

[...] used in my blog. I like reading obviously but it seems to be quite heavy on stuff from the single article I wrote on Rhipe – unusual words I [...]

Comment on Forward To Vegas by Peter Russell

Peter Russell — Sat, 18 Dec 2010 09:51:18 +0000

Christ! Firing that desert eagle looked serious!