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…
Notes: DevOps Practices
DevOps is the culture of collaboration between Development and Operations. Some essential Devops concepts include: Build Automation (BA) : It…
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…
Forgot ‘ambari’ password?
Working with multiple clusters at the same time can sometimes mean too many passwords to make note of! While for the…
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…
Switching between Namenodes
Once Namenode HA is configured for the Hadoop cluster, generally you have one ‘active’ and one ‘standby’ namenode. Basically, this…
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…
How to ingest JSON data to Hive?
Given JSON Data { “Person”: { “FirstName”: “Piyush”, “LastName”: “Routray”, “date”: [1990, 10, 28] }, “Friends”: [{ “Name”: “Vaibhav”, “State”:…
Piyush Routray 