Spark Sql Optimisation - A data skew story
Performance Optimisation is hard, I had a few lessons the hard way with Elasticsearch Query Optimisation and OpenTSDB/HBase Tuning in the past. Spark Optimisation or Spark SQL Optimisation results
OpenTSDB/HBase - Improving Stability And Performance
OpenTSDB is a time series database based on HBase. It is used as a distributed monitoring system where metrics are collected and pinged to openTSDB from servers/machines. The metrics
ElasticSearch Query: Performance Optimisation
In one of my previous posts on elasticsearch, i shared my understanding of elasticsearch configurations and best practices. That was mostly from an indexing perspective. There are several tweaks one