javanna opened a new pull request, #12569: URL: https://github.com/apache/lucene/pull/12569
Concurrent search is currently applied once per search call, either when search is called, or when concurrent query rewrite happens. They generally don't happen within one another. There are situations in which we are going to introduce parallelism in places where there could be multiple inner levels of parallelism requested as each task could try to parallelize further. In these cases, with certain executor implementations, like ThreadPoolExecutor, we may deadlock as we are waiting for all tasks to complete but they are waiting for threads to free up to complete their execution. This commit introduces a simple safeguard that makes sure that we only parallelize via the executor at the top-level invokeAll call. When each task tries to parallelize further, we just execute them directly instead of submitting them to the executor. -- 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: issues-unsubscr...@lucene.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org
