Sergey Shelukhin created HIVE-7926: -------------------------------------- Summary: long-lived daemons for query fragment execution, I/O and caching Key: HIVE-7926 URL: https://issues.apache.org/jira/browse/HIVE-7926 Project: Hive Issue Type: New Feature Reporter: Sergey Shelukhin
We are proposing a new execution model for Hive that is a combination of existing process-based tasks and long-lived daemons running on worker nodes. These nodes can take care of efficient I/O, caching and query fragment execution, while heavy lifting like most joins, ordering, etc. can be handled by tasks. The proposed model is not a 2-system solution for small and large queries; neither it is a separate execution engine like MR or Tez. It can be used by any Hive execution engine, if support is added; in future even external products (e.g. Pig) can use it. The document with high-level design we are proposing will be attached shortly. -- This message was sent by Atlassian JIRA (v6.3.4#6332)