Hi Peter, Another concern I realized recently is that with current Executors abstraction(FLIP-73) I'm afraid that user program is designed to ALWAYS run on the client side. Specifically, we deploy the job in executor when env.execute called. This abstraction possibly prevents Flink runs user program on the cluster side.
For your proposal, in this case we already compiled the program and run on the client side, even we deploy a cluster and retrieve job graph from program metadata, it doesn't make many sense. cc Aljoscha & Kostas what do you think about this constraint? Best, tison. Peter Huang <huangzhenqiu0...@gmail.com> 于2019年12月10日周二 下午12:45写道： > Hi Tison, > > Yes, you are right. I think I made the wrong argument in the doc. > Basically, the packaging jar problem is only for platform users. In our > internal deploy service, > we further optimized the deployment latency by letting users to packaging > flink-runtime together with the uber jar, so that we don't need to consider > multiple flink version > support for now. In the session client mode, as Flink libs will be shipped > anyway as local resources of yarn. Users actually don't need to package > those libs into job jar. > > > > Best Regards > Peter Huang > > On Mon, Dec 9, 2019 at 8:35 PM tison <wander4...@gmail.com> wrote: > > > > 3. What do you mean about the package? Do users need to compile their > > jars > > inlcuding flink-clients, flink-optimizer, flink-table codes? > > > > The answer should be no because they exist in system classpath. > > > > Best, > > tison. > > > > > > Yang Wang <danrtsey...@gmail.com> 于2019年12月10日周二 下午12:18写道： > > > > > Hi Peter, > > > > > > Thanks a lot for starting this discussion. I think this is a very > useful > > > feature. > > > > > > Not only for Yarn, i am focused on flink on Kubernetes integration and > > come > > > across the same > > > problem. I do not want the job graph generated on client side. Instead, > > the > > > user jars are built in > > > a user-defined image. When the job manager launched, we just need to > > > generate the job graph > > > based on local user jars. > > > > > > I have some small suggestion about this. > > > > > > 1. `ProgramJobGraphRetriever` is very similar to > > > `ClasspathJobGraphRetriever`, the differences > > > are the former needs `ProgramMetadata` and the latter needs some > > arguments. > > > Is it possible to > > > have an unified `JobGraphRetriever` to support both? > > > 2. Is it possible to not use a local user jar to start a per-job > cluster? > > > In your case, the user jars has > > > existed on hdfs already and we do need to download the jars to deployer > > > service. Currently, we > > > always need a local user jar to start a flink cluster. It is be great > if > > we > > > could support remote user jars. > > > >> In the implementation, we assume users package flink-clients, > > > flink-optimizer, flink-table together within the job jar. Otherwise, > the > > > job graph generation within JobClusterEntryPoint will fail. > > > 3. What do you mean about the package? Do users need to compile their > > jars > > > inlcuding flink-clients, flink-optimizer, flink-table codes? > > > > > > > > > > > > Best, > > > Yang > > > > > > Peter Huang <huangzhenqiu0...@gmail.com> 于2019年12月10日周二 上午2:37写道： > > > > > > > Dear All, > > > > > > > > Recently, the Flink community starts to improve the yarn cluster > > > descriptor > > > > to make job jar and config files configurable from CLI. It improves > the > > > > flexibility of Flink deployment Yarn Per Job Mode. For platform > users > > > who > > > > manage tens of hundreds of streaming pipelines for the whole org or > > > > company, we found the job graph generation in client-side is another > > > > pinpoint. Thus, we want to propose a configurable feature for > > > > FlinkYarnSessionCli. The feature can allow users to choose the job > > graph > > > > generation in Flink ClusterEntryPoint so that the job jar doesn't > need > > to > > > > be locally for the job graph generation. The proposal is organized > as a > > > > FLIP > > > > > > > > > > > > > > https://cwiki.apache.org/confluence/display/FLINK/FLIP-85+Delayed+JobGraph+Generation > > > > . > > > > > > > > Any questions and suggestions are welcomed. Thank you in advance. > > > > > > > > > > > > Best Regards > > > > Peter Huang > > > > > > > > > >
