jnturton opened a new pull request, #2636: URL: https://github.com/apache/drill/pull/2636
# [DRILL-8290](https://issues.apache.org/jira/browse/DRILL-8290): Short circuit recursive file listings for LIMIT 0 queries ## Description The existing LIMIT 0 query optimisations do not prevent a query run against the top of a deep DFS directory tree from recursively listing FileStatuses for everything within it using a pool of worker threads. This PR adds a new optimisation whereby such queries will recurse into the directory tree on a single thread that returns as soon as any single FileStatus has been obtained. ## Documentation Mention in the docs on LIMIT 0 optimisations. ## Testing TODO -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: dev-unsubscr...@drill.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
