{"status":"public","department":[{"_id":"DaAl"}],"publication_identifier":{"isbn":["9798350337662"],"eissn":["1530-2075"]},"publication_status":"published","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","type":"conference","oa":1,"date_updated":"2024-07-29T07:04:36Z","month":"07","year":"2024","date_created":"2024-07-28T22:01:11Z","publication":"2024 IEEE International Parallel and Distributed Processing Symposium","day":"08","doi":"10.1109/IPDPS57955.2024.00023","title":"Wait-free trees with asymptotically-efficient range queries","article_processing_charge":"No","quality_controlled":"1","scopus_import":"1","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2310.05293","open_access":"1"}],"publisher":"IEEE","corr_author":"1","date_published":"2024-07-08T00:00:00Z","page":"169-179","citation":{"ama":"Kokorin I, Yudov V, Aksenov V, Alistarh D-A. Wait-free trees with asymptotically-efficient range queries. In: <i>2024 IEEE International Parallel and Distributed Processing Symposium</i>. IEEE; 2024:169-179. doi:<a href=\"https://doi.org/10.1109/IPDPS57955.2024.00023\">10.1109/IPDPS57955.2024.00023</a>","apa":"Kokorin, I., Yudov, V., Aksenov, V., &#38; Alistarh, D.-A. (2024). Wait-free trees with asymptotically-efficient range queries. In <i>2024 IEEE International Parallel and Distributed Processing Symposium</i> (pp. 169–179). San Francisco, CA, United States: IEEE. <a href=\"https://doi.org/10.1109/IPDPS57955.2024.00023\">https://doi.org/10.1109/IPDPS57955.2024.00023</a>","ieee":"I. Kokorin, V. Yudov, V. Aksenov, and D.-A. Alistarh, “Wait-free trees with asymptotically-efficient range queries,” in <i>2024 IEEE International Parallel and Distributed Processing Symposium</i>, San Francisco, CA, United States, 2024, pp. 169–179.","chicago":"Kokorin, Ilya, Victor Yudov, Vitaly Aksenov, and Dan-Adrian Alistarh. “Wait-Free Trees with Asymptotically-Efficient Range Queries.” In <i>2024 IEEE International Parallel and Distributed Processing Symposium</i>, 169–79. IEEE, 2024. <a href=\"https://doi.org/10.1109/IPDPS57955.2024.00023\">https://doi.org/10.1109/IPDPS57955.2024.00023</a>.","short":"I. Kokorin, V. Yudov, V. Aksenov, D.-A. Alistarh, in:, 2024 IEEE International Parallel and Distributed Processing Symposium, IEEE, 2024, pp. 169–179.","mla":"Kokorin, Ilya, et al. “Wait-Free Trees with Asymptotically-Efficient Range Queries.” <i>2024 IEEE International Parallel and Distributed Processing Symposium</i>, IEEE, 2024, pp. 169–79, doi:<a href=\"https://doi.org/10.1109/IPDPS57955.2024.00023\">10.1109/IPDPS57955.2024.00023</a>.","ista":"Kokorin I, Yudov V, Aksenov V, Alistarh D-A. 2024. Wait-free trees with asymptotically-efficient range queries. 2024 IEEE International Parallel and Distributed Processing Symposium. IPDPS: International Parallel and Distributed Processing Symposium, 169–179."},"acknowledgement":"We thank Trevor Brown and Yuanhao Wei for the discussion and anonymous reviewers for helping us to improve the paper. Also, we thank JetBrains and Huawei for their support.","language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"Tree data structures, such as red-black trees, quad trees, treaps, or tries, are fundamental tools in computer science. A classical problem in concurrency is to obtain expressive, efficient, and scalable versions of practical tree data structures. We are interested in concurrent trees supporting range queries, i.e., queries that involve multiple consecutive data items. Existing implementations with this capability can list keys in a specific range, but do not support aggregate range queries: for instance, if we want to calculate the number of keys in a range, the only choice is to retrieve a whole list and return its size. This is suboptimal: in the sequential setting, one can augment a balanced search tree with counters and, consequently, perform these aggregate requests in logarithmic rather than linear time.In this paper, we propose a generic approach to implement a broad class of range queries on concurrent trees in a way that is wait-free, asymptotically efficient, and practically scalable. The key idea is a new mechanism for maintaining metadata concurrently at tree nodes, which can be seen as a wait-free variant of hand-over-hand locking (which we call hand-over-hand helping). We did a preliminary implementation of the wait-free binary search tree and preliminary experiments have indicated the soundness of our approach."}],"conference":{"name":"IPDPS: International Parallel and Distributed Processing Symposium","start_date":"2024-05-27","end_date":"2024-05-31","location":"San Francisco, CA, United States"},"oa_version":"Preprint","_id":"17332","author":[{"last_name":"Kokorin","first_name":"Ilya","full_name":"Kokorin, Ilya"},{"last_name":"Yudov","first_name":"Victor","full_name":"Yudov, Victor"},{"first_name":"Vitaly","full_name":"Aksenov, Vitaly","last_name":"Aksenov"},{"orcid":"0000-0003-3650-940X","full_name":"Alistarh, Dan-Adrian","first_name":"Dan-Adrian","id":"4A899BFC-F248-11E8-B48F-1D18A9856A87","last_name":"Alistarh"}],"external_id":{"arxiv":["2310.05293"]}}