CentOS generally comes with mysql-connector-java-5.1.17.jar. However, there are many known bugs with the same. Hortonworks suggests updating the jar to … More
Author: Piyush
Notes: DevOps Practices
DevOps is the culture of collaboration between Development and Operations. Some essential Devops concepts include: Build Automation (BA) : It … More
Dividing folder contents into subfolders
Recently, I came across a problem of dividing a folder with N number of files into sub-folders with almost equal … More
Forgot ‘ambari’ password?
Working with multiple clusters at the same time can sometimes mean too many passwords to make note of! While for the … More
Tire Pressure of Harley Davidson Softail Slim S
Front tire 36 psi Rear tire 42 psi Putting a note about the optimal tire pressure for my Harley Davidson … More
Switching between Namenodes
Once Namenode HA is configured for the Hadoop cluster, generally you have one ‘active’ and one ‘standby’ namenode. Basically, this … More
Dealing with ‘under-replicated’ blocks in the HDFS
One fine evening, I came across a notification in our HDP cluster. This was result of planned node modification which … More
How to ingest JSON data to Hive?
Given JSON Data { “Person”: { “FirstName”: “Piyush”, “LastName”: “Routray”, “date”: [1990, 10, 28] }, “Friends”: [{ “Name”: “Vaibhav”, “State”: … More
Piyush Routray 