Oops how much tablespace is left?
A few days ago, I was asked to load some tables in Oracle. A rather trivial question but I wasn’t sure if enough tablespace was left. From the table definition,…
A few days ago, I was asked to load some tables in Oracle. A rather trivial question but I wasn’t sure if enough tablespace was left. From the table definition,…
Sqoop is a tool that allows you to ship data from a RDBMS to a Hadoop platform. Let us take an example to clarify this. One may have some data…
Netcat is a utility in unix to investigate network connections. It has now been ported to windows and it allows us to query network connections on a windows platform with…
Flume allows to directly tranfer messages into a file. It even allows such files to be stored on Hadoop. This opens a way to capture messages in a file that…
I encountered the term “serialise”. But what does it mean? I understood the term “serialise” when I read a comment that explained that data structures can be created inside, say,…
Another example shows a similar idea. In this example a stream is created. This stream consists of 3 objects that contain a name and a number. Once the stream is…
I got a better understanding when I used AVRO to write data via PHP and to read them via Java. It demonstrated to me how data can be written in…
When you read about Hadoop, you come across AVRO. This is a mechanism to exchange data via streams and it is named after the famous British aircraft industry that amongst…
There are zillions of small little Linux commands that make life easy. Those tiny little commands may save you hours of time and tons of frustration. Wheneever I look as…
This post provides info on how data may be added on a Big Data platform with help of Hive and Impala. We start with a dataset that is stored on…