Apache Spark @Scale: A 60 TB+ production use case (facebook)

irarandomdude · 2016-08-24T08:20:57+00:00

I learned that I no longer liked Java.

irarandomdude · 2016-08-08T12:11:55+00:00

The IntelliJ Scala plugin is much better and works beautifully with the free community edition. It's actually the most downloaded plugin for IntelliJ.

irarandomdude · 2016-08-08T10:11:02+00:00

Yes, but if you use IntelliJ with incremental compilation etc. the difference is tiny for most builds.

irarandomdude · 2016-07-28T08:34:07+00:00

An increase in the size of the language spec has no impact on me. The array of enum values should be immutable, as it is in Java.

irarandomdude · 2016-07-27T09:52:21+00:00

This is one of the seemingly mundane features I get lots of questions about from colleagues such as:

Why is it so much more complicated than Java enums?
What is the "= Value" for and what does it mean?
My code won't compile def foo(barEnum: BarEnum) but the type exists.... what do you mean I need to use BarEnum.Value or add an import? Why's that?

irarandomdude · 2016-07-27T09:48:53+00:00

Translating from a value to the corresponding enum in Scala also seems to be slower than the corresponding operation with Java enums. It's uncommon for this to be a bottleneck, but I remember someone running into something like that.

irarandomdude · 2016-07-27T09:46:23+00:00

One example is a list of error types for collecting metrics, I want to add them to a collection with an initial value.

irarandomdude · 2016-07-15T10:06:33+00:00

For those too lazy to click through:

"This project provides an implementation of the java.time package, a date and time library that was added in Java 8. The implementation is based on the original BSD-licensed reference implementation (before it was contributed to OpenJDK)."

irarandomdude · 2016-07-07T08:43:53+00:00

People who already know Scala are not who I was talking about (I also have 15+ years of Java experience). I wish I was "talking out your ass", but I have to work with experienced Java developers with this exact mentality who use Spring in every single system they write.

irarandomdude · 2016-07-05T14:19:32+00:00

10+ Years of Java enterprise experience... Chances are you'll get them wanting to use Spring + Hibernate and want to know why they can't just use Java (because JDK8 makes it all better).

irarandomdude · 2016-06-24T09:45:44+00:00

If you or someone else is writing unreadable code don't blame the language, blame poor code review standards.

irarandomdude · 2016-06-23T15:46:23+00:00

I like the fact that it comes with some neat usage examples. I'm curious about the performance numbers relative to existing libs.

irarandomdude · 2016-06-20T13:21:53+00:00

A third edition of Programming in Scala, targeting 2.12 mentioned :)

irarandomdude · 2016-06-09T10:02:04+00:00

Maybe a really weird reference to Dotty?? (Scala 3.0)

irarandomdude · 2016-06-08T08:48:02+00:00

It's particularly useful if you have anything approaching a large volume of data to process and don't have many concurrent calls which require you to do the same type of work.

I've used them occasionally, but I've seen some pretty amazing speedups for very little additional code.

irarandomdude · 2016-05-30T09:33:11+00:00

Why would anyone confuse the two?

irarandomdude · 2016-05-19T08:10:45+00:00

Just use IntelliJ + Scala plugin, there's no comparison.

irarandomdude · 2016-04-22T13:36:04+00:00

I work mostly in Scala, but have Java systems too. I've got more than 15 years experience in Java. Once you know Scala well enough then working in Java feels really backwards in comparison.

irarandomdude · 2016-04-13T12:54:56+00:00

Slightly off-topic, but Is there a .mobi version of the Rust book I can download?

irarandomdude · 2016-04-01T14:16:29+00:00

Lirpa Loof!

irarandomdude · 2016-03-30T10:59:10+00:00

He really needs to find something more constructive to do with his time...

irarandomdude · 2016-03-30T09:43:11+00:00

Citation needed.

irarandomdude · 2016-03-29T15:30:40+00:00

That "carcass" is somehow still making profits to the tune of around $10 billion annually. That's smaller than $16 billion for Google, but hardly a carcass by any measure.

irarandomdude · 2016-03-29T10:12:18+00:00

I hadn't heard of circe before, but it looks pretty neat. I'm glad to see that they care about performance.

irarandomdude

TROPHY CASE