+1. Thanks Marton.
-Li On 2020/5/14, 2:55 PM, "Sammi Chen" <[email protected]> wrote: +1， Thanks Marton for bring up the dicussion and providing the history info. Bests, Sammi On Wed, May 13, 2020 at 3:53 PM Elek, Marton <[email protected]> wrote: > > > I would like to start a discussion to make a separate Apache project for > Ozone > > > > ### HISTORY [1] > > * Apache Hadoop Ozone development started on a feature branch of > Hadoop repository (HDFS-7240) > > * In the October of 2017 a discussion has been started to merge it to > the Hadoop main branch > > * After a long discussion it's merged to Hadoop trunk at the March of > 2018 > > * During the discussion of the merge, it was suggested multiple times > to create a separated project for the Ozone. But at that time: > 1). Ozone was tightly integrated with Hadoop/HDFS > 2). There was an active plan to use Block layer of Ozone (HDDS or > HDSL at that time) as the block level of HDFS > 3). The community of Ozone was a subset of the HDFS community > > * The first beta release of Ozone was just released. Seems to be a > good time before the first GA to make a decision about the future. > > > > ### WHAT HAS BEEN CHANGED > > During the last years Ozone became more and more independent both at > the community and code side. The separation has been suggested again and > again (for example by Owen [2] and Vinod [3]) > > > > From COMMUNITY point of view: > > > * Fortunately more and more new contributors are helping Ozone. > Originally the Ozone community was a subset of HDFS project. But now a > bigger and bigger part of the community is related to Ozone only. > > * It seems to be easier to _build_ the community as a separated project. > > * A new, younger project might have different practices > (communication, commiter criteria, development style) compared to old, > mature project > > * It's easier to communicate (and improve) these standards in a > separated projects with clean boundaries > > * Separated project/brand can help to increase the adoption rate and > attract more individual contributor (AFAIK it has been seen in Submarine > after a similar move) > > * Contribution process can be communicated more easily, we can make > first time contribution more easy > > > > From CODE point of view Ozone became more and more independent: > > > * Ozone has different release cycle > > * Code is already separated from Hadoop code base > (apache/hadoop-ozone.git) > > * It has separated CI (github actions) > > * Ozone uses different (more strict) coding style (zero toleration of > unit test / checkstyle errors) > > * The code itself became more and more independent from Hadoop on > Maven level. Originally it was compiled together with the in-tree latest > Hadoop snapshot. Now it depends on released Hadoop artifacts (RPC, > Configuration...) > > * It starts to use multiple version of Hadoop (on client side) > > * Volume of resolved issues are already very high on Ozone side (Ozone > had slightly more resolved issues than HDFS/YARN/MAPREDUCE/COMMON all > together in the last 2-3 months) > > > Summary: Before the first Ozone GA release, It seems to be a good time > to discuss the long-term future of Ozone. Managing it as a separated TLP > project seems to have more benefits. > > > Please let me know what your opinion is... > > Thanks a lot, > Marton > > > > > > [1]: For more details, see: > https://github.com/apache/hadoop-ozone/blob/master/HISTORY.md > > [2]: > > https://lists.apache.org/thread.html/0d0253f6e5fa4f609bd9b917df8e1e4d8848e2b7fdb3099b730095e6%40%3Cprivate.hadoop.apache.org%3E > > [3]: > > https://lists.apache.org/thread.html/8be74421ea495a62e159f2b15d74627c63ea1f67a2464fa02c85d4aa%40%3Chdfs-dev.hadoop.apache.org%3E > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > >
