Posts
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Sep 28, 2016
This shall be a 10-minute read on the JavaScript prototype topic. It is my notes when reading Angus Croll’s post on the same topic. All the code examples here can be easily verified using nodejs or browser developer tools, e.g.,… read more »
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Jul 19, 2016
I had this issue using awscli in a Docker container:
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Mar 6, 2016
After installing Fedora 23 Linux, I had to do a few steps to get my wifi adapter working, which is a Broadcom BCM43228 card. It turns out that these steps have to be repeated each time after a kernel update.… read more »
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Feb 13, 2016
Log files are extremely useful for finding the root cause of a failed YARN application. This naturally also applies to any EMR application. As a distributed framework, Hadoop generates a lot of log files, even for a single application. Understanding… read more »
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Feb 8, 2016
Avro schema supports nested record definitions, i.e., definition of a custom record, whose fields are again some other custom records. One of the questions I had while working on an Avro schema was: why do I have to repeat the… read more »
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Dec 14, 2015
In a real-world scenario, if a newly deployed RPM does not behave as expected, doing a rollback, i.e., downgrading the RPM to its previously installed, older version, is a typical backoff procedure. It surprises me a lot that the Ansible… read more »
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Dec 6, 2015
I was working on a simple tool (a distributed grep) using Hadoop streaming in Bash. Everything works fine when testing locally with the standard approach:
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Aug 11, 2011
Some developers enjoy coding, but hate testing. I guess these are the possible reasons:
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