I personally would like to see the move to 1.0 be when we are stable.
- Bobby
On Wednesday, November 11, 2015 9:42 AM, Derek Dagit
<der...@yahoo-inc.com.INVALID> wrote:
>>> We should consider bumping up to version 1.0 sometime soon and then
>>> switching to semantic versioning [3] from then on.
> 1.0 release based off of the clojure 0.11.x code.
Will 0.11.x -> 1.0 also communicate a move from "beta" to "stable" or anything
like this, or will it be simply a version scheme change?
> It may take a little longer, but we will always have a working codebase
Agree 100% this is important.
--
Derek
----- Original Message -----
From: Bobby Evans <ev...@yahoo-inc.com.INVALID>
To: "dev@storm.apache.org" <dev@storm.apache.org>
Cc:
Sent: Wednesday, November 11, 2015 8:51 AM
Subject: Re: [DISCUSS] Plan for Merging JStorm Code
+1 for doing a 1.0 release based off of the clojure 0.11.x code. Migrating the
APIs to org.apache.storm is a big non-backwards compatible move, and a major
version bump to 2.x seems like a good move there.
+1 for the release plan
I would like the move for user facing APIs to org.apache to be one of the last
things we do. Translating clojure code into java and moving it to org.apache I
am not too concerned about.
Basti,
We have two code bases that have diverged significantly from one another in
terms of functionality. The storm code now or soon will have A Heartbeat
Server, Nimbus HA (Different Implementation), Resource Aware Scheduling, a
distributed cache like API, log searching, security, massive performance
improvements, shaded almost all of our dependencies, a REST API for
programtically accessing everything on the UI, and I am sure I am missing a few
other things. JStorm also has many changes including cgroup isolation,
restructured zookeeper layout, classpath isolation, and more too.
No matter what we do it will be a large effort to port changes from one code
base to another, and from clojure to java. I proposed this initially because
it can be broken up into incremental changes. It may take a little longer, but
we will always have a working codebase that is testable and compatible with the
current storm release, at least until we move the user facing APIs to be under
org.apache. This lets the community continue to build and test the master
branch and report problems that they find, which is incredibly valuable. I
personally don't think it will be much easier, especially if we are intent on
always maintaining compatibility with storm. - Bobby
On Wednesday, November 11, 2015 5:42 AM, 刘键(Basti Liu)
<basti...@alibaba-inc.com> wrote:
Hi Taylor,
Thanks for the merge plan. I have a question about “Phase 2.2”.
Do you mean community plan to create a fresh new “java core” based on current
“clojure core” firstly, and then migrate the features from JStorm?
If so, it confused me. It is really a huge job which might require a long
developing time to make it stable, while JStorm is already a stable version.
The release planned to be release after Nov 11th has already run online stably
several month in Alibaba.
Besides this, there are many valuable internal requirements in Alibaba, the
fast evolution of JStorm is forseeable in next few months.
If the “java core” is totally fresh new, it might bring many problems for the
coming merge.
So, from the point of this view, I think it is much better and easier to
migrate the features of “clojure core” basing on JStorm for the “java core”.
Please correct me, if any misunderstanding.
Regards
Basti
发件人: P. Taylor Goetz [mailto:ptgo...@gmail.com]
发送时间: 2015年11月11日 5:32
收件人: dev@storm.apache.org
主题: [DISCUSS] Plan for Merging JStorm Code
Based on a number of discussions regarding merging the JStorm code, I’ve tried
to distill the ideas presented and inserted some of my own. The result is below.
I’ve divided the plan into three phases, though they are not necessarily
sequential — obviously some tasks can take place in parallel.
None of this is set in stone, just presented for discussion. Any and all
comments are welcome.
-------
Phase 1 - Plan for 0.11.x Release
1. Determine feature set for 0.11.x and publish to wiki [1].
2. Announce feature-freeze for 0.11.x
3. Create 0.11.x branch from master (Phase 2.4 can begin.)
4. Release 0.11.0 (or whatever version # we want to use)
5. Bug fixes and subsequent releases from 0.11.x-branch
Phase 2 - Prepare for Merge ("master" and "jstorm-import" branches)
1. Determine/document unique features in JStorm (e.g. classpath isolation,
cgroups, etc.) and create JIRA for migrating the feature.
2. Create JIRA for migrating each clojure component (or logical group of
components) to Java. Assumes tests will be ported as well.
3. Discuss/establish style guide for Java coding conventions. Consider using
Oracle’s or Google’s Java conventions as a base — they are both pretty solid.
4. align package names (e.g backtype.storm --> org.apache.storm /
com.alibaba.jstorm --> org.apache.storm) (Phase 3 can begin)
Phase 3 - Migrate Clojure --> Java
1. Port code/tests to Java, leveraging existing JStorm code wherever possible
(core functionality only, features distinct to JStorm migrated separately).
2. Port JStorm-specific features.
3. Begin releasing preview/beta versions.
4. Code cleanup (across the board) and refactoring using established coding
conventions, and leveraging PMD/Checkstyle reports for reference. (Note: good
oportunity for new contributors.)
5. Release 0.12.0 (or whatever version # we want to use) and lift feature
freeze.
Notes:
We should consider bumping up to version 1.0 sometime soon and then switching
to semantic versioning [3] from then on.
With the exception of package name alignment, the "jstorm-import" branch will
largely be read-only throughout the process.
During migration, it's probably easiest to operate with two local clones of the
Apache Storm repo: one for working (i.e. checked out to working branch) and one
for reference/copying (i.e. checked out to "jstorm-import").
Feature-freeze probably only needs to be enforced against core functionality.
Components under "external" can likely be exempt, but we should figure out a
process for accepting and releasing new features during the migration.
Performance testing should be continuous throughout the process. Since we don't
really have ASF infrastructure for performance testing, we will need a
volunteer(s) to host and run the performance tests. Performance test results
can be posted to the wiki [2]. It would probably be a good idea to establish a
baseline with the 0.10.0 release.
I’ve attached an analysis document Sean Zhong put together a while back to the
JStorm merge JIRA [4]. The analysis was against the 0.9.3 release but is still
relevant and has a lot of good information.
[1] https://cwiki.apache.org/confluence/display/STORM/Release+0.11.0+Feature+Set
[2] https://cwiki.apache.org/confluence/display/STORM/Storm+Home
[3] http://semver.org
[4] https://issues.apache.org/jira/browse/STORM-717
-Taylor
