pan3793 commented on PR #13:
URL: https://github.com/apache/incubator-uniffle/pull/13#issuecomment-1176491177
> I know this is not easy because getting MR stack is difficult in local.
What I mean is not easy is to build a cross-version **Spark** IT.
> The reproduction is complicated ... 3) switch to the master branch and
recompile ...
It's clear to me when you said "See MRIntegrationTestBase `File file = new
File(parentPath, "client-mr/target/shaded");`". But for step 3, it's better to
switch `ec00ad9`, the commit which I cut the branch out, the master has gone
ahead.
> but it is better to notify the client/server should be the same version in
the document.
I would prefer to dig out the root cause before documenting the conclusion.
My first round of cross-version testing failed but the following rounds were
successful. And the first-round failure is because I put the new MR client jar
to a temp folder, if there are some temp files deleted by other processes, the
test will fail w/
```
java.io.IOException: /home/chengpan/.docker/run/docker-cli-api.sock: No such
file or directory
at
org.apache.uniffle.test.WordCountTest.wordCountTest(WordCountTest.java:66)
```
And if I put the client-mr jar build w/ new gRPC version to an immutable
folder, then IT passed.
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