The First Cry of Atom Today is the first day of the rest of my life.

Welcome to Lagrange!

Lagrange is a minimalist Jekyll theme. The purpose of this theme is to provide a simple, clean, content-focused blogging platform for your personal site or blog. Below you can find everything you need to get started. Getting Started Getting Started: getting started with installing Lagrange, whether you are completely new to using Jekyll, or si... Read more

Import your own data with td CLI

I’m little consused to use td CLI to import my own data into Treasure Data service. In terms of bulk import, there some concept you should know. Of course it is not difficult. Once you understand the internals, you might be able to make the import process more efficient. The detail is here. Steps There are some steps to do bulk import with t... Read more

Hive UDAF mode

There are big difference between Hive UDF and UDAF. I found that when I was developing UDAF. Normal UDF usually process one row into one value. And Hive jobs are executed as MapReduce job (of course other can do run such as Tez or Spark). So in the case of ordinal UDF, it is only necessary to run mapper. However UDAF is different. UDAF must... Read more

Join TreasureData

I’ve just done career change. I quitted the company where I’ve worked for about 3 years. That’s the first company for me after graduating university. To make progress my career, I decided to change my affiliation. I joined into TreasureData which provides a cloud based data analysis service. I was attracted the high level technologies and tha... Read more

Getting Started

Lagrange Lagrange is a minimalist Jekyll theme for running a personal blog or site for free through Github Pages, or on your own server. Everything that you will ever need to know about this Jekyll theme is included in the README below, which you can also find in the demo site. Table of Contents Introduction What is Jekyll ... Read more