+1 Good On 2022/09/22 03:45:10 Yu Li wrote: > Hi All, > > I would like to propose Datark [1] as a new apache incubator project, and > you can find the proposal [2] of Datark for more details. > > Datark is an intermediate (shuffle and spilled) data service for big data > compute engines (Apache Spark, Apache Flink, Apache Hive, etc.) to boost > performance, stability, and flexibility. It aims at enabling computing > engines to fully embrace the disaggregated architecture. In a lot of cases, > intermediate data depends on large local disks, and is often a major cause > of inefficiency, instability, and inflexibility in the lifecycle of a > distributed job. Datark solves the problems through the following core > designs: > > 1. Push-based shuffle plus partition data aggregation to turn random IO > access into sequential access. > 2. FileSystem-like API to support writing spilled data. > 3. Hierarchical storage from memory to DFS/object store to enable fast > cache and massive storage space. > 4. Engine-irrelevant APIs for easy integrating to various engines. > 5. Extended fault tolerance and data replication to increase reliability > > Datark is currently adopted in the production environment at both Alibaba > and many other companies, serving petabytes of data per day. Beyond that, > it has more open source users including Shopee, NetEase, Bilibily, BOSS, > and Synnex. Most of these users have made contributions to the project, > forming an active community with dozens of developers. > > The proposed initial committers are interested in joining ASF to reinforce > extensive collaboration and build a more vibrant community. We believe the > Datark project will provide tremendous value for the community if it is > introduced into the Apache incubator. > > I will help this project as the champion and many thanks to our four other > mentors: > > * Becket Qin (j...@apache.org) > * Duo Zhang (zhang...@apache.org) > * Lidong Dai (lidong...@apache.org) > * Willem Jiang (ningji...@apache.org) > > FWIW, although with different solutions, the issues Datark aims to resolve > have some overlap with Apache Uniffle (incubating) [3]. Actually we noticed > this during the discussion phase of Uniffle incubation (when we were also > preparing for the incubation) and had some open and friendly discussion to > see whether there could be a joint force [4], and finally decided to > develop independently for the time being [5]. > > Look forward to your feedback. Thanks. > > Best Regards, > Yu > > [1] https://github.com/alibaba/RemoteShuffleService > [2] https://cwiki.apache.org/confluence/display/INCUBATOR/DatarkProposal > [3] https://uniffle.apache.org/ > [4] https://lists.apache.org/thread/1w74z5f0pb7bhslhzcl5x7rdj9s9objz > [5] https://lists.apache.org/thread/pg8lzhzc1794x3yloqp169j0mdzqs3yw >
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