If I'm seeing
> java.lang.NoClassDefFoundError...
# contributing-to-airbytem
Mason Wheeler
05/19/2021, 6:22 PMIf I'm seeing
java.lang.NoClassDefFoundError: com/google/common/collect/Streamswhen running tests, what's the most likely culprit? Googling suggests that there's likely something missing from the classpath, but this error is being raised from core Airbyte code that I'm pulling in as a dependency, so it doesn't feel like my project should need something added to its classpath. On the other hand, I haven't touched those modules, and it doesn't seem as if other tests that depend on them have any trouble running, so the problem has to be in my project somewhere... right?
u
user
05/19/2021, 8:32 PMmight help if you can put up your work so far in a draft PR.
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05/19/2021, 8:33 PMalso which gradle task is causing it?
u
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05/19/2021, 8:44 PMu
user
05/19/2021, 8:45 PMIt's caused by running
OracleIntegrationTestu
user
05/19/2021, 11:39 PMwhen you run
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./gradlew :airbyte-integrations:connectors:destination-oracle:integrationTestu
user
05/19/2021, 11:39 PMdo you get the same error?
u
user
05/20/2021, 3:06 PMYes:
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> Task :airbyte-integrations:connectors:destination-oracle:integrationTestJava
OracleIntegrationTest > testCheckConnectionInvalidCredentials() FAILED
java.lang.NoClassDefFoundError: com/google/common/collect/Streams
at io.airbyte.commons.string.Strings.join(Strings.java:33)
at io.airbyte.validation.json.JsonSchemaValidator.test(JsonSchemaValidator.java:76)
at io.airbyte.workers.protocols.airbyte.AirbyteProtocolPredicate.test(AirbyteProtocolPredicate.java:44)
at io.airbyte.workers.protocols.airbyte.DefaultAirbyteStreamFactory.lambda$create$1(DefaultAirbyteStreamFactory.java:81)
at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:176)
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
at java.base/java.util.Spliterators$IteratorSpliterator.tryAdvance(Spliterators.java:1812)
at java.base/java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:127)
at java.base/java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:502)
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:488)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
at java.base/java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:150)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:543)
at io.airbyte.workers.DefaultCheckConnectionWorker.run(DefaultCheckConnectionWorker.java:81)
at io.airbyte.integrations.standardtest.destination.TestDestination.runCheck(TestDestination.java:800)
at io.airbyte.integrations.standardtest.destination.TestDestination.testCheckConnectionInvalidCredentials(TestDestination.java:306)
... and so onu
user
05/20/2021, 3:22 PMI'm assuming you've run a clean and then build?
u
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05/20/2021, 3:26 PMYeah, no difference
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05/20/2021, 4:48 PMfwiw, i cannot reproduce this on my machine.
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05/20/2021, 4:48 PMi pulled down your branch and ran the integration tests in intellij and in the cli and i'm not seeing anything fail with this class def issue.
u
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05/20/2021, 4:49 PM🤦♂️
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05/20/2021, 4:50 PMoh
u
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05/20/2021, 4:50 PMwait.
u
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05/20/2021, 4:50 PMyou seeing it now?
u
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05/20/2021, 4:51 PMyup
u
user
05/20/2021, 4:51 PMit was hidden. but i see it.
u
user
05/20/2021, 4:51 PMGreat. Any idea what's causing it? 😛
u
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05/20/2021, 4:56 PMmy guess is that whatever version of guava the oracle dependency is using is conflicting with the verusion of guava we are using
u
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05/20/2021, 4:56 PMguava == com/google/commons
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05/20/2021, 5:02 PMthough tbh, i'm not really seeing any weird version of guava in the dependencies
u
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05/20/2021, 5:02 PM Copy code
./gradlew :airbyte-integrations:connectors:destination-oracle:dependencies | grep guavau
user
05/20/2021, 5:05 PMweird
u
user
05/20/2021, 5:05 PMi might have a fix.
u
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05/20/2021, 5:05 PMrunning 2 last tests.
u
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05/20/2021, 5:06 PMyeah?
u
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05/20/2021, 5:07 PMi just bumped the version of guava.
u
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05/20/2021, 5:07 PMfor the whole project?
u
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05/20/2021, 5:07 PMyeah
u
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05/20/2021, 5:07 PMi pushed a commit
u
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05/20/2021, 5:08 PMin that dependecy graph from that command i was seeing 2 versions. 29.0 and 30.1.1
u
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05/20/2021, 5:08 PMwe declare 0.29.0
u
user
05/20/2021, 5:08 PMso i figured i'd just try to get everything to 30.1.1 and that seemed to work.
u
user
05/20/2021, 5:08 PMSounds good