+1 (binding) On Tue, Nov 24, 2015 at 9:10 PM, Ralph Goers <ralph.go...@dslextreme.com> wrote:
> -1 (binding) > I’d like to see the project start with CTR and use RTC only for specific > cases (like where tests must be modified, over X (1000 lines?) of code > added, etc. > > Ralph > > > > On Nov 24, 2015, at 2:03 PM, Henry Robinson <he...@cloudera.com> wrote: > > > > Hi - > > > > The [DISCUSS] thread has been quiet for a few days, so I think there's > been > > sufficient opportunity for discussion around our proposal to bring Impala > > to the ASF Incubator. > > > > I'd like to call a VOTE on that proposal, which is on the wiki at > > https://wiki.apache.org/incubator/ImpalaProposal, and which I've pasted > > below. > > > > During the discussion period, the proposal has been amended to add Brock > > Noland as a new mentor, to add one missed committer from the list and to > > correct some issues with the dependency list. > > > > Please cast your votes as follows: > > > > [] +1, accept Impala into the Incubator > > [] +/-0, non-counted vote to express a disposition > > [] -1, do not accept Impala into the Incubator (please give your > reason(s)) > > > > As with the concurrent Kudu vote, I propose leaving the vote open for a > > full seven days (to close at Tuesday, December 1st at noon PST), due to > the > > upcoming US holiday. > > > > Thanks, > > Henry > > > > -------- > > > > = Abstract = > > Impala is a high-performance C++ and Java SQL query engine for data > stored > > in Apache Hadoop-based clusters. > > > > = Proposal = > > > > We propose to contribute the Impala codebase and associated artifacts > (e.g. > > documentation, web-site content etc.) to the Apache Software Foundation > > with the intent of forming a productive, meritocratic and open community > > around Impala’s continued development, according to the ‘Apache Way’. > > > > Cloudera owns several trademarks regarding Impala, and proposes to > transfer > > ownership of those trademarks in full to the ASF. > > > > = Background = > > Engineers at Cloudera developed Impala and released it as an > > Apache-licensed open-source project in Fall 2012. Impala was written as a > > brand-new, modern C++ SQL engine targeted from the start for data stored > in > > Apache Hadoop clusters. > > > > Impala’s most important benefit to users is high-performance, making it > > extremely appropriate for common enterprise analytic and business > > intelligence workloads. This is achieved by a number of software > > techniques, including: native support for data stored in HDFS and related > > filesystems, just-in-time compilation and optimization of individual > query > > plans, high-performance C++ codebase and massively-parallel distributed > > architecture. In benchmarks, Impala is routinely amongst the very highest > > performing SQL query engines. > > > > = Rationale = > > > > Despite the exciting innovation in the so-called ‘big-data’ space, SQL > > remains by far the most common interface for interacting with data in > both > > traditional warehouses and modern ‘big-data’ clusters. There is clearly a > > need, as evidenced by the eager adoption of Impala and other SQL engines > in > > enterprise contexts, for a query engine that offers the familiar SQL > > interface, but that has been specifically designed to operate in massive, > > distributed clusters rather than in traditional, fixed-hardware, > > warehouse-specific deployments. Impala is one such query engine. > > > > We believe that the ASF is the right venue to foster an open-source > > community around Impala’s development. We expect that Impala will benefit > > from more productive collaboration with related Apache projects, and > under > > the auspices of the ASF will attract talented contributors who will push > > Impala’s development forward at pace. > > > > We believe that the timing is right for Impala’s development to move > > wholesale to the ASF: Impala is well-established, has been > Apache-licensed > > open-source for more than three years, and the core project is relatively > > stable. We are excited to see where an ASF-based community can take > Impala > > from this strong starting point. > > > > = Initial Goals = > > Our initial goals are as follows: > > > > * Establish ASF-compatible engineering practices and workflows > > * Refactor and publish existing internal build scripts and test > > infrastructure, in order to make them usable by any community member. > > * Transfer source code, documentation and associated artifacts to the > ASF. > > * Grow the user and developer communities > > > > = Current Status = > > > > Impala is developed as an Apache-licensed open-source project. The source > > code is available at http://github.com/cloudera/Impala, and developer > > documentation is at https://github.com/cloudera/Impala/wiki. The > majority > > of commits to the project have come from Cloudera-employed developers, > but > > we have accepted some contributions from individuals from other > > organizations. > > > > All code reviews are done via a public instance of the Gerrit review tool > > at http://gerrit.cloudera.org:8080/, and discussed on a public mailing > > list. All patches must be reviewed before they are accepted into the > > codebase, via a voting mechanism that is similar to that used on Apache > > projects such as Hadoop and HBase. > > > > Before a patch is committed, it must pass a suite of pre-commit tests. > > These tests are currently run on Cloudera’s internal infrastructure. One > of > > our initial goals will be to work with the ASF Infrastructure team to > find > > a way to run these tests in an acceptable way on publicly accessible > > machines. > > > > Issues are tracked in JIRA at > https://issues.cloudera.org/projects/IMPALA, > > in a way that is extremely similar to existing practices at other ASF > > projects. > > > > = Meritocracy = > > > > We understand the central importance of meritocracy to the Apache Way. We > > will work to establish a welcoming, fair and meritocratic community, in > > part by expanding the set of committers on the project. Although Impala’s > > committer list will initially be dominated by members of the Impala > > engineering team at Cloudera, we look forward to growing a rich user and > > developer community. > > > > = Community = > > Impala has a strong user community (see > > https://groups.google.com/a/cloudera.org/forum/#!forum/impala-user), > and a > > growing developer community (see > > https://groups.google.com/a/cloudera.org/forum/#!forum/impala-dev). We > wish > > to attract more developers to the project, and we believe that the ASF’s > > open and meritocratic philosophy will help us with this. We note the > > success of other, similar projects already part of the ASF. > > > > = Core Developers = > > Most - but not all - of Impala’s core developers are not currently > > affiliated with the ASF, and will require new ICLAs. > > > > = Alignment = > > Impala is related to several other Apache projects: > > > > * Data that is read by Impala is very often stored in Apache Hadoop > > clusters powered by the HDFS filesystem. > > * Impala can also read data stored in Apache HBase > > * Metadata for databases, tables and so on is read by Impala from Apache > > Hive. > > * The preferred data format for HDFS-based tables is Apache Parquet, and > > Apache Avro is also a supported data format. > > * Impala is closely integrated with Kudu, which is also being proposed to > > the Incubator. > > * Impala uses Apache Thrift as its RPC and serialization framework of > > choice. > > > > = Known Risks = > > > > == Orphaned Products == > > Impala is used by most of Cloudera’s customers, and Cloudera remains > > committed to developing and supporting the project. Cloudera has a strong > > track record in standing behind projects that were contributed to the ASF > > by its employees, including Apache Flume, Apache Sqoop, and others. Other > > companies both ship and support Impala, lending credence to the idea that > > Impala is not at risk of being suddenly orphaned. > > > > == Inexperience with Open Source == > > Although all committers on the initial list have significant experience > > with at least one open-source project - namely Impala - fewer have much > > experience with ASF-based software projects as contributors and community > > members. However, with the guidance of our mentors, committers who do > have > > ASF experience, and time to learn during Incubation, we are confident > that > > the project can be run in accordance with Apache principles on an ongoing > > basis. > > > > == Homogeneous Developers == > > > > The initial committers are employees of Cloudera. > > > > The project has received some contributions from developers outside of > > Cloudera, from individuals belonging to organizations such as Intel and > > Google, from hobbyists and from students using Impala to advance their > > understanding of distributed databases. The project attracted an active > > user community as well. We hope to continue to encourage contributions > from > > these developers and community members and grow them into committers > after > > they have had time to continue their contributions. > > > > == Reliance on Salaried Developers == > > > > Many of Impala’s initial set of committers work full-time on Impala, and > > are paid to do so. However, as mentioned elsewhere, we anticipate growth > in > > the developer community which we hope will include hobbyists and > academics > > who have an interested in distributed data systems. > > > > == An Excessive Fascination with the Apache Brand == > > Although we hope that Impala benefits from the Apache Brand, any > reflected > > goodwill to Cloudera as the contributing entity is not the goal of > > establishing Impala as an Apache project. We will work with the Incubator > > PMC and the PRC to ensure that the Apache Brand is respected. > > > > = Documentation = > > Impala: A Modern, Open-Source SQL Engine for Hadoop ( > > http://www.cidrdb.org/cidr2015/Papers/CIDR15_Paper28.pdf) > > > > Impala’s developer wiki (https://github.com/cloudera/Impala/wiki) > > > > Impala’s auto-generated API documentation ( > > http://impala.io/doc/html/index.html) > > > > = Initial Source = > > Impala’s initial source contribution will come from > > http://github.com/cloudera/Impala/. > > > > = External Dependencies = > > > > Impala depends upon a number of third-party libraries, which we list > below. > > We intend to compile a LICENSE.txt file in the very short term (see > > https://issues.cloudera.org/browse/IMPALA-2670). > > > > * Google gflags (BSD) > > * Google glog (BSD) > > * Apache Thrift (Apache Software License v2.0) > > * Apache Commons (Apache Software License v2.0) > > * Apache Hadoop (Apache Software License v2.0) > > * Apache HBase (Apache Software License v2.0) > > * Apache Hive (Apache Software License v2.0) > > * Boost (Boost Software License) > > * OpenLdap (OpenLDAP Software License) > > * rapidjson (MIT) > > * Google RE2 (BSD-style) > > * lz4 (BSD) > > * snappy (BSD) > > * cyrus-sasl (CMU License) > > * Apache Avro (Apache Software License v2.0) > > * Cloudera squeasel (Apache Software License v2.0) > > * Apache htrace (Incubating) (Apache Software License v2.0) > > * Apache Sentry (Incubating) (Apache Software License v2.0) > > * Apache Shiro (Apache Software License v2.0) > > * Twitter Bootstrap (Apache Software License v2.0) > > * d3 (BSD) > > * LLVM (BSD-like) > > > > Build and test dependencies: > > > > * ant (Apache Software License v2.0) > > * Apache Maven (Apache Software License v2.0) > > * cmake (BSD) > > * clang (BSD) > > * Google gtest (Apache Software License v2.0) > > > > = Required Resources = > > > > We request that following resources be created for the project to use: > > > > == Mailing lists == > > > > * priv...@impala.incubator.apache.org (moderated subscriptions) > > * comm...@impala.incubator.apache.org > > * d...@impala.incubator.apache.org > > * iss...@impala.incubator.apache.org > > * u...@impala.incubator.apache.org > > > > == Git repository == > > https://git.apache.org/impala.git > > > > == JIRA instance == > > JIRA project IMPALA (IMPALA or IMP) > > > > == Other Resources == > > We hope to continue using Gerrit for our code review and commit workflow. > > We are involved with discussions that the Kudu team at Cloudera have been > > having with Jake Farrell to start discussions on how Gerrit can fit into > > the ASF. We know that several other ASF projects or podlings are also > > interested in Gerrit. > > > > If the Infrastructure team does not have the bandwidth to support gerrit, > > we will continue to support our own instance of gerrit for Impala, and > make > > the necessary integrations such that commits are properly authenticated > and > > maintain sufficient provenance to uphold the ASF standards (e.g. via the > > solution adopted by the AsterixDB podling). > > > > = Initial Committers = > > > > * Tim Armstrong > > * Alex Behm > > * Taras Bobrovytsky > > * Casey Ching > > * Martin Grund > > * Daniel Hecht > > * Michael Ho > > * Matthew Jacobs > > * Ishaan Joshi > > * Lenni Kuff > > * Marcel Kornacker > > * Sailesh Mukil > > * Henry Robinson > > * John Russell > > * Dimitris Tsirogiannis > > * Skye Wanderman-Milne > > * Juan Yu > > > > == Affiliations == > > All: Cloudera Inc. > > > > = Sponsors = > > > > == Champion == > > Tom White > > > > == Nominated Mentors == > > * Tom White (Cloudera) > > * Todd Lipcon (Cloudera) > > * Carl Steinbach (LinkedIn) > > * Brock Noland (StreamSets) > > > > > > = Sponsoring Entity = > > We ask that the Incubator PMC sponsor this proposal. > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: general-unsubscr...@incubator.apache.org > For additional commands, e-mail: general-h...@incubator.apache.org > >
