To loop the list in on discussions going on in
https://github.com/apache/beam/pull/5443: our normal tests don't run
against the shaded jars. Gradle can run the tests against the shaded jars,
but a bunch fail due to dependency issues. It's not just SQL.

Andrew

On Mon, May 21, 2018 at 11:35 AM Lukasz Cwik <[email protected]> wrote:

> Shading requires two pieces of information:
> 1) Which dependencies should be part of the shaded jar (controlled by
> includes/excludes)
> 2) How to relocate code within those dependencies (controlled by
> relocations)
>
> The reason why the exclude(".*") exists is because typically it is an
> error to produce a shaded package with dependencies which are not
> relocated. When libraries do this, it causes a lot of
> NoClassFound/NoMethodFound errors for users since a user can't know which
> version of a dependency they are actually getting (the one that was bundled
> part of your jar or the one they depend on as a library). Only applications
> should ever really do this, libraries should always repackage all their
> code to prevent such errors.
>
> Note that in the SQL package, you can provide your own shadowClosure to
> the applyJavaNature() which means that the default won't apply. For
> example:
> https://github.com/apache/beam/blob/a3ba6a0e8de3ae72b8fc6fc6038eb9dc725f092e/sdks/java/harness/build.gradle#L20
> and remove the 'DEFAULT_SHADOW_CLOSURE <<'
>
>
> On Mon, May 21, 2018 at 10:26 AM Andrew Pilloud <[email protected]>
> wrote:
>
>> The issue SQL is seeing is caused by a default dependency of
>> exclude(".*") added in build_rules.gradle. This breaks the normal method of
>> building shadow jars as everything must be explicitly included. SQL
>> explicitly added calcite to the jar, but not calcite's dependencies. I've
>> been told this is the desired behavior as we want to ensure everything
>> included is relocated.
>>
>> I don't know much about gradle, but this seems fragile. Is it possible to
>> have all dependencies automatically relocated so we don't need the
>> exclude(".*") rule?
>>
>> Andrew
>>
>> On Thu, May 17, 2018 at 7:41 PM Andrew Pilloud <[email protected]>
>> wrote:
>>
>>> Yep, I added the issue as a blocker.
>>> https://issues.apache.org/jira/projects/BEAM/issues/BEAM-4357
>>>
>>> On Thu, May 17, 2018, 6:05 PM Kenneth Knowles <[email protected]> wrote:
>>>
>>>> This sounds like a release blocker. Can you add it to the list? (Assign
>>>> fix version on jira)
>>>>
>>>> Kenn
>>>>
>>>> On Thu, May 17, 2018, 17:30 Lukasz Cwik <[email protected]> wrote:
>>>>
>>>>> Typically we have a test block which uses a configuration that has the
>>>>> shadow/shadowTest configurations on the classpath instead of the
>>>>> compile/testCompile configurations. The most common examples are validates
>>>>> runner/integration tests for example:
>>>>>
>>>>> https://github.com/apache/beam/blob/0c5ebc449554a02cae5e4fd01afb07ecdb0bbaea/runners/direct-java/build.gradle#L84
>>>>>
>>>>> On Thu, May 17, 2018 at 3:59 PM Andrew Pilloud <[email protected]>
>>>>> wrote:
>>>>>
>>>>>> I decided to try our new JDBC support with sqlline and discovered
>>>>>> that our SQL shaded jar is completely broken. As
>>>>>> in java.lang.NoClassDefFoundError all over the place. How are we testing
>>>>>> the output jars from other beam packages? Is there an example I can 
>>>>>> follow
>>>>>> to make our integration tests run against the release artifacts?
>>>>>>
>>>>>> Andrew
>>>>>>
>>>>>

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