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Scaling Equi-Joins

Summary: AM-Join fuses Tree-Join and Broadcast-Join to scale equi-joins in shared-nothing systems, addressing join-key skew with robust load balancing. It supports all outer-join variants without deduplication or custom partitioning; IB-Join enables Small-Large outer-joins by keeping the small table in memory, with a Spark-based implementation delivering notable speedups. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID
6482
Venue
SIGMOD
Year
2022
Pagerank
5.093636e-05
Overall Rank
11,556 | 20.72%
DOI
10.1145/3514221.3526042

Incoming Non-self Citations Over Time

No non-self incoming citations found for this paper in this database.

Authors

BibTeX Citation

@inproceedings{metwally_sigmod22,
        title = {{Scaling Equi-Joins}},
        author = {Metwally, Ahmed},
        series = {{SIGMOD} '22},
        booktitle = {Proceedings of the {ACM} {SIGMOD} International Conference on Management of Data},
        publisher = {Association for Computing Machinery},
        doi = {10.1145/3514221.3526042},
        url = {https://dl.acm.org/doi/10.1145/3514221.3526042},
        year = {2022}
}

Incoming Citations (Sorted by Pagerank)

Showing 1 of 1 citing papers.

Rank Citing Paper Year Venue Pagerank
11,149 Similarity Joins of Sparse Features 2024 SIGMOD 5.093636e-05
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Outgoing Citations (Sorted by Pagerank)

Showing 29 of 29 cited papers.

Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.

Rank Cited Paper Year Venue Pagerank
72 Map-Reduce-Merge: Simplified Relational Data Processing on Large Clusters 2007 SIGMOD 0.00037695852
209 Sort vs. Hash Revisited: Fast Join Implementation on Modern Multi-Core CPUs 2009 VLDB 0.00024932174
242 A Performance Evaluation of Four Parallel Join Algorithms in a Shared-Nothing Multiprocessor Environment 1989 SIGMOD 0.00023604323
252 Multi-Core, Main-Memory Joins: Sort vs. Hash Revisited 2014 VLDB 0.00023242719
360 Design and Evaluation of Main Memory Hash Join Algorithms for Multi-core CPUs 2011 SIGMOD 0.00020182846
423 Massively Parallel Sort-Merge Joins in Main Memory Multi-Core Database Systems 2012 VLDB 0.00018725853
451 Mergeable Summaries 2012 PODS 0.00018151445
481 Practical Skew Handling in Parallel Joins 1992 VLDB 0.00017780716
631 Relational Joins on Graphics Processors 2008 SIGMOD 0.00015591241
769 A Comparison of Join Algorithms for Log Processing in MapReduce 2010 SIGMOD 0.00014166872
843 Processing Theta-Joins using MapReduce* 2011 SIGMOD 0.00013666161
892 Rack-Scale In-Memory Join Processing using RDMA 2015 SIGMOD 0.00013376761
976 The End of Slow Networks: It's Time for a Redesign 2016 VLDB 0.00012864533
1,076 High-Speed Query Processing over High-Speed Networks 2016 VLDB 0.00012270109
1,117 Accelerating Relational Databases by Leveraging Remote Memory and RDMA 2016 SIGMOD 0.00012108907
1,265 An Experimental Comparison of Thirteen Relational Equi-Joins in Main Memory 2016 SIGMOD 0.00011415709
1,320 From Theory to Practice: Efficient Join Query Evaluation in a Parallel Database System 2015 SIGMOD 0.00011166426
1,397 Approximate Join Processing Over Data Streams 2003 SIGMOD 0.00010906135
1,415 V-SMART-Join: A Scalable MapReduce Framework for All-Pair Similarity Joins of Multisets and Vectors 2012 VLDB 0.00010840141
1,657 Handling Data Skew in Parallel Joins in Shared-Nothing Systems 2008 SIGMOD 0.00010096933
1,974 Track Join: Distributed Joins with Minimal Network Traffic 2014 SIGMOD 9.3658402e-05
2,926 Distributed Join Algorithms on Thousands of Cores 2017 VLDB 7.9549783e-05
2,962 To Partition, or Not to Partition, That is the Join Question in a Real System 2021 SIGMOD 7.9170451e-05
3,134 Efficient Join Algorithms For Large Database Tables in a Multi-GPU Environment 2021 VLDB 7.7231028e-05
3,227 MG-Join: A Scalable Join for Massively Parallel Multi-GPU Architectures 2021 SIGMOD 7.6217889e-05
3,532 Scalable Distributed Stream Join Processing 2015 SIGMOD 7.3369085e-05
3,578 Advanced Join Strategies for Large-Scale Distributed Computation 2014 VLDB 7.2899943e-05
5,599 A Tight Lower Bound for Comparison-Based Quantile Summaries 2020 PODS 6.154479e-05
9,666 Constructing Join Histograms from Histograms with q-error Guarantees 2016 SIGMOD 5.2406474e-05
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