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certificates  cloudera  data connection  files  jars  java api  java  kudu  local  maven  multiple  policy  signed  unlimited strength  work 
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Preview: Harsh J

Harsh J

Memoirs of a QWERTY Keyboard

Last Build Date: Mon, 16 Oct 2017 14:08:06 +0000


Checking if your JRE has the Unlimited-strength Policy Files in place

Thu, 03 Dec 2015 01:32:53 +0000

To use the included 256-bit encryption algorithms within Java, Oracle Java JDK or JRE requires you to download and replace the US_export_policy.jar and local_policy.jar files under your $JAVA_HOME/jre/lib/security/ directory with a variant of these files called ‘JCE Unlimited Strength Jurisdiction Policy Files’ obtained here. These jars, commonly referred to as the ‘Unlimited JCE files‘, control […]

GNU egrep does not support the \d shorthand

Sun, 01 Nov 2015 07:52:25 +0000

I learnt this the hard way (and said hello to a large living world of non-standard regex implementations). The GNU grep/egrep documentation page documents all their special backslash character support but \d is not one of them. That is, the following will not work when trying to match a numeric digit at the beginning of […]

Duplicating a tab in Safari

Thu, 22 Oct 2015 15:47:46 +0000

If you are a Safari user on Mac OS X, you may have noticed that it lacks a duplicate tab feature (such as the one in Google Chrome, when you right click a tab area). While it would be nice to have this added directly into Safari, you can use the following key combination to […]

OS X El Capitan Upgrade Hangs

Fri, 02 Oct 2015 06:15:32 +0000

Just like it did when I upgraded from OS X Mavericks to OS X Yosemite a year ago, attempting an upgrade from OSX Yosemite to OSX El Capitan hung again in the same nondescript manner – a blank/empty screen with the pointer, for seemingly infinite period. I tried to wait it out for a few […]

Writing a simple Kudu Java API Program

Thu, 01 Oct 2015 02:46:05 +0000

This post is about using Cloudera’s new Kudu service, via its Java API interface, in a Maven-based Java program. Kudu ships with a Java client library that is ready to use, and also publishes the Java library jars on Cloudera’s Maven repositories. To use within your Maven project pom.xml, add the below to the appropriate […]

Checking out a git branch when multiple remotes (repos) are involved

Wed, 30 Sep 2015 06:02:38 +0000

When you are dealing with a local git repository which has multiple remotes defined (i.e. has multiple remote repositories possibly carrying the same branches, such as multiple forks), then the right way to checkout a working branch from one of them is to use the below syntax: Where origin is the name of the remote. You can […]

Purging away unnecessary local maven repository jars

Tue, 22 Sep 2015 06:49:31 +0000

As someone who works with a lot of Java (or other JVM related) projects, I often notice my $HOME/.m2 local maven cache grows quite big over time. This is due to a natural result of a lot of mvn install and other equivalent commands, that build and install the project jars locally (some large projects […]

Why your mobile data connection may not work on Mi4 (or other MIUI devices)

Wed, 09 Sep 2015 06:01:16 +0000

As a user of Airtel in India, and as a new Xiaomi Mi4 user, I found this issue as I began to use the phone wherein the mobile data connection (Mobile Office APN in Airtel’s case) would connect instantly, but simply not work in applications. This is evident in the case of Google Maps, for […]

About a moto-scooter I own

Fri, 21 Aug 2015 06:23:43 +0000

I purchased a Honda Dio moto-scooter in August 2014 last year, mainly for work commute purposes and I’ve been trying to monitor its mileage performance for a while since then. This post is about my observations, and some mileage data that may help others quantify their own purchases. I’ve so far consistently gotten an average of 52+ kilo-meters, […]

Trusting self-signed SSL certificates in Cloudera Hue

Wed, 19 Aug 2015 17:55:58 +0000

Using self-signed certificates is an easy process. Its very useful in local test environments, something we often rely on at my work. However, it has its cons when the width of the ecosystem weighs in (software written in languages other than Java, such as Python, C++, etc.), as the support and configuration for trusting self-signed certificates varies […]