Notes on all things data and code

  • Mockito VerifyNoMoreInteractions and Unverified Interactions 25 April 2021
  • External tables on parquet files - Invalid/missing columns 29 January 2019
  • Debugging spark applications on EMR 29 December 2018
  • Presto on Amazon EMR 28 December 2018
  • Athena JDBC driver error 01 November 2018
  • add_months behavior in Hive and Spark vs Oracle 13 August 2018
  • AWS S3 Copying empty success file 30 April 2018
  • Neteza timestamp functions 30 April 2018
  • Hive dynamic partitioning - MSCK repair 30 April 2018
  • Hive timestamp parsing and nulls 30 April 2018
  • Airflow bastion ssh config 30 April 2018
  • Tradeking to Morningstar data conversion - Python. 25 November 2017
  • apache spark intro notes 20 November 2017
  • SQL Gotchas 20 November 2017
  • Apache spark is better integrated with AWS 20 November 2017
  • AWS Solutions Architect Associate 24 April 2017
  • Athena Query error 25 February 2017
  • AWS Athena notes 25 February 2017
  • Oracle database partition manager using PL/SQL 22 December 2016

who am i

I am a data engineer with interests in databases, data science, algorithms and programming in general.

where am i

linkedin//rchamarthi
stackoverflow/users/237939/rchamarthi
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