balmukundblr opened a new pull request #132: URL: https://github.com/apache/lucene/pull/132
<!-- _(If you are a project committer then you may remove some/all of the following template.)_ Before creating a pull request, please file an issue in the ASF Jira system for Lucene: * https://issues.apache.org/jira/projects/LUCENE You will need to create an account in Jira in order to create an issue. The title of the PR should reference the Jira issue number in the form: * LUCENE-####: <short description of problem or changes> LUCENE must be fully capitalized. A short description helps people scanning pull requests for items they can work on. Properly referencing the issue in the title ensures that Jira is correctly updated with code review comments and commits. --> # Description Description Please note- This is not a new PR- Original PR (apache/lucene-solr#2345) was raised on old apache/lucene-solr github repository. This is just a copy in new repo. Lucene Benchmark Scaling Problem with Reuters Corpus While Indexing 1 million documents with reuters21578 (plain text Document derived from reuters21578 corpus), we observed that with higher number of Index threads, the Index throughput does not scale and degrades. Existing implementation with synchronization block allows only one thread to pick up a document/file from list, at any given time – this code is part of getNextDocData() in ReutersContentSource.java. With multiple index threads, this becomes a thread contention bottleneck and does not allow the system CPU resource to be used efficiently. # Solution We developed a strategy to distribute total number of files across multiple number of Indexing threads, so that these threads work independently and parallelly. # Tests We mainly modified existing getNextDocData(), which is not altering functionality, hence not added any new test cases. Passed existing tests # Checklist Please review the following and check all that apply: - [X] I have reviewed the guidelines for [How to Contribute](https://wiki.apache.org/lucene/HowToContribute) and my code conforms to the standards described there to the best of my ability. - [ ] I have created a Jira issue and added the issue ID to my pull request title. - [X] I have given Lucene maintainers [access](https://help.github.com/en/articles/allowing-changes-to-a-pull-request-branch-created-from-a-fork) to contribute to my PR branch. (optional but recommended) - [X] I have developed this patch against the `main` branch. - [X] I have run `./gradlew check`. - [ ] I have added tests for my changes. -- 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. 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