Posts by Category

AWS

Encrypt Existing AWS RDS : The GDPR Series

5 minute read

Last, and the most dreaded, comes the MySQL RDS. The most critical part of infrastructure which is responsible for auth, new sign-ups and other user related ...

Resize EBS Root Volume of CentOS 6 AMI

1 minute read

So the other day I had to create a CentOS 6 AMI for HDP installation as it had Hue package available only for CentOS 6. I launched an instance with EBS attac...

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HBase

Upgrading Apache Phoenix in HDP Cluster

1 minute read

About new Hadoop cluster we set up, the phoenix version bundled with HDP distribution(4.7) had some bugs which would make it impossible to use to run BI quer...

Migrating OpenTSDB to Another HBase Cluster

1 minute read

As a part of migration from CDH cluster to HDP cluster, we also had to migrate OpenTSDB which was running on CDH cluster. There are many methods to copy/tran...

HBase Benchmarking

4 minute read

Currently I am working with new setup of Apache HBase cluster to query data using Phoenix  on top of HDP Distribution. After setting up cluster, the values f...

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python

Detecting Memory Leak in Python

5 minute read

In production, a memory leak will not always bubble up. And there could be multiple reasons behind it. You may not be getting enough traffic. Frequent deploy...

TCP Fast Open: In Action with Python

3 minute read

Recently I was revisiting concepts of TCP protocol and that reminded me that there was also a thing called TCP Fast Open. Digging further on the same reveale...

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Linux

How to reconfigure Zynq-PL on-the-go?

less than 1 minute read

You would have wondered if i’s possible to reconfigure the PL part without any interruption while PS is running Linux. Well, i’s possible and as simple as,

Resize EBS Root Volume of CentOS 6 AMI

1 minute read

So the other day I had to create a CentOS 6 AMI for HDP installation as it had Hue package available only for CentOS 6. I launched an instance with EBS attac...

Debugging Stuck Process in Linux

2 minute read

The other day I faced a problem with monitoring setup and I found that the WebUI is not responding. I SSHed into server and checked if process is running. It...

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FPGA

How to reconfigure Zynq-PL on-the-go?

less than 1 minute read

You would have wondered if i’s possible to reconfigure the PL part without any interruption while PS is running Linux. Well, i’s possible and as simple as,

Configure PS of PYNQ to work with SDK

14 minute read

Hi, If you’re an FPGA fan or someone who’s got PYNQ board for fun, you might be having a hard time making it run Vivado SDK projects. That’s because, the PY...

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Zynq

How to reconfigure Zynq-PL on-the-go?

less than 1 minute read

You would have wondered if i’s possible to reconfigure the PL part without any interruption while PS is running Linux. Well, i’s possible and as simple as,

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HDP

Upgrading Apache Phoenix in HDP Cluster

1 minute read

About new Hadoop cluster we set up, the phoenix version bundled with HDP distribution(4.7) had some bugs which would make it impossible to use to run BI quer...

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Networking

TCP Fast Open: In Action with Python

3 minute read

Recently I was revisiting concepts of TCP protocol and that reminded me that there was also a thing called TCP Fast Open. Digging further on the same reveale...

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