In 2020, in response to the pandemic, we saw an urgent shift to SaaS and various emerging technologies. It was covered at length in “Introducing Trends 2021 – 'The Great Digital Switch'.” Largely driven by necessity, organizations needed to make drastic moves “to keep the lights on” and cater to operations in a more virtual and remote style. This big leap forward drastically changed the IT landscape and infrastructure in a lot of organizations.
Apache Impala is a massively parallel in-memory SQL engine supported by Cloudera designed for Analytics and ad hoc queries against data stored in Apache Hive, Apache HBase and Apache Kudu tables. Supporting powerful queries and high levels of concurrency Impala can use significant amounts of cluster resources. In multi-tenant environments this can inadvertently impact adjacent services such as YARN, HBase, and even HDFS.