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https://issues.apache.org/jira/browse/KAFKA-17111?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Greg Harris resolved KAFKA-17111.
---------------------------------
Resolution: Fixed
> ServiceConfigurationError in JsonSerializer/Deserializer during Plugin
> Discovery
> --------------------------------------------------------------------------------
>
> Key: KAFKA-17111
> URL: https://issues.apache.org/jira/browse/KAFKA-17111
> Project: Kafka
> Issue Type: Bug
> Components: connect
> Affects Versions: 3.8.0
> Reporter: Vikas Balani
> Assignee: Vikas Balani
> Priority: Blocker
> Fix For: 3.8.0
>
>
> h3. Problem:
> JsonSerializer and JsonDeserializer use
> objectMapper.findAndRegisterModules(), which attempts to register all Jackson
> modules implementing com.fasterxml.jackson.databind.Module. This can cause a
> ServiceConfigurationError when incompatible modules are present in the
> classpath.
>
> {code:java}
> java.util.ServiceConfigurationError:
> org.apache.kafka.connect.storage.Converter: Provider
> org.apache.kafka.connect.json.JsonConverter could not be instantiated
> at java.base/java.util.ServiceLoader.fail(ServiceLoader.java:586)
> at
> java.base/java.util.ServiceLoader$ProviderImpl.newInstance(ServiceLoader.java:813)
> at java.base/java.util.ServiceLoader$ProviderImpl.get(ServiceLoader.java:729)
> at java.base/java.util.ServiceLoader$3.next(ServiceLoader.java:1403)
> at
> org.apache.kafka.connect.runtime.isolation.PluginScanner.handleLinkageError(PluginScanner.java:176)
> at
> org.apache.kafka.connect.runtime.isolation.PluginScanner.getServiceLoaderPluginDesc(PluginScanner.java:136)
> at
> org.apache.kafka.connect.runtime.isolation.ServiceLoaderScanner.scanPlugins(ServiceLoaderScanner.java:61)
> at
> org.apache.kafka.connect.runtime.isolation.PluginScanner.scanUrlsAndAddPlugins(PluginScanner.java:79)
> at
> org.apache.kafka.connect.runtime.isolation.PluginScanner.discoverPlugins(PluginScanner.java:67)
> at
> org.apache.kafka.connect.runtime.isolation.Plugins.initLoaders(Plugins.java:99)
> at org.apache.kafka.connect.runtime.isolation.Plugins.<init>(Plugins.java:90)
> at org.apache.kafka.connect.runtime.isolation.Plugins.<init>(Plugins.java:78)
> at
> org.apache.kafka.connect.cli.AbstractConnectCli.startConnect(AbstractConnectCli.java:128)
> at
> org.apache.kafka.connect.cli.AbstractConnectCli.run(AbstractConnectCli.java:101)
> at
> org.apache.kafka.connect.cli.ConnectDistributed.main(ConnectDistributed.java:113)
> Caused by: java.util.ServiceConfigurationError:
> com.fasterxml.jackson.databind.Module:
> com.fasterxml.jackson.datatype.jsr310.JavaTimeModule not a subtype
> at java.base/java.util.ServiceLoader.fail(ServiceLoader.java:593)
> at
> java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.hasNextService(ServiceLoader.java:1244)
> at
> java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.hasNext(ServiceLoader.java:1273)
> at java.base/java.util.ServiceLoader$2.hasNext(ServiceLoader.java:1309)
> at java.base/java.util.ServiceLoader$3.hasNext(ServiceLoader.java:1393)
> at
> com.fasterxml.jackson.databind.ObjectMapper.findModules(ObjectMapper.java:1158)
> at
> com.fasterxml.jackson.databind.ObjectMapper.findModules(ObjectMapper.java:1142)
> at
> com.fasterxml.jackson.databind.ObjectMapper.findAndRegisterModules(ObjectMapper.java:1192)
> at
> org.apache.kafka.connect.json.JsonSerializer.<init>(JsonSerializer.java:58)
> at org.apache.kafka.connect.json.JsonConverter.<init>(JsonConverter.java:250)
> at org.apache.kafka.connect.json.JsonConverter.<init>(JsonConverter.java:238)
> at
> java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62)
> at
> java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:502)
> at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486)
> at
> java.base/java.util.ServiceLoader$ProviderImpl.newInstance(ServiceLoader.java:789)
> ... 13 more{code}
>
> h3. Steps to Reproduce:
> 1. Start a connect worker with Service loading enabled and with certain
> connector plugins in plugin path (e.g. AzureBlobSource & BigQuerySink)
> 2. Observe ServiceConfigurationError during plugin discovery
> h3. Current Behavior:
> ServiceConfigurationError is thrown with message
> "com.fasterxml.jackson.databind.Module: <module-name> not a subtype"
> Where <module-name> can be one of: -
> * com.fasterxml.jackson.module.jaxb.JaxbAnnotationModule
> * com.fasterxml.jackson.datatype.jsr310.JavaTimeModule
> * com.fasterxml.jackson.datatype.guava.GuavaModule
> * com.fasterxml.jackson.datatype.joda.JodaModule
> h3. Proposed Solution:
> Explicitly register the Afterburner module instead of using
> findAndRegisterModules().
> h3. Potential Impact:
> - Resolves compatibility issues with certain Jackson modules
> - Maintains performance improvements from Afterburner module
> - May slightly change behavior for users relying on auto-registration of
> other Jackson modules
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