src-kafka/gradle/findbugs-exclude.xml

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<FindBugsFilter>
    <!-- Exclude a few findbugs codes.
         EI: May expose internal representation by returning reference to mutable object.
         EI2: May expose internal representation by incorporating reference to mutable object.
         MS: Malicious code vulnerability.
         See http://findbugs.sourceforge.net/bugDescriptions.html for a full description of the findbugs codes.
    -->
    <Match>
        <Bug code="EI,EI2,MS"/>
    </Match>

    <Match>
        <!-- Suppress a warning about some static initializers in Schema using instances of a
             subclass. -->
        <Or>
            <Class name="org.apache.kafka.connect.data.Schema"/>
            <Class name="org.apache.kafka.connect.data.SchemaBuilder"/>
        </Or>
        <Bug pattern="IC_SUPERCLASS_USES_SUBCLASS_DURING_INITIALIZATION"/>
    </Match>

    <Match>
        <!-- Suppress warnings about unread protected fields in some public classes.
             Although these are not read in Kafka Connect code, they are part of the API. -->
        <Or>
            <Class name="org.apache.kafka.connect.connector.Connector"/>
            <Class name="org.apache.kafka.connect.sink.SinkTask"/>
            <Class name="org.apache.kafka.connect.source.SourceTask"/>
        </Or>
        <Bug pattern="URF_UNREAD_PUBLIC_OR_PROTECTED_FIELD"/>
    </Match>

    <Match>
        <!-- Suppress warnings about converting an integer number of
             milliseconds to a java.util.Date object.  We do this intentionally in
             org.apache.kafka.connect.data.Time. -->
        <Class name="org.apache.kafka.connect.data.Time"/>
        <Method name="toLogical"/>
        <Bug pattern="ICAST_INT_2_LONG_AS_INSTANT"/>
    </Match>

    <Match>
        <!-- Suppress some minor warnings about machine-generated code for LRU cache
             benchmarking. -->
        <Package name="org.apache.kafka.jmh.cache.generated"/>
    </Match>

    <Match>
        <!-- Suppress warnings about ignoring the return value of await.
             This is done intentionally because we use other clues to determine
             if the wait was cut short. -->
        <Class name="org.apache.kafka.connect.runtime.WorkerSourceTask"/>
        <Method name="execute"/>
        <Bug pattern="RV_RETURN_VALUE_IGNORED"/>
    </Match>

    <Match>
        <!-- Suppress some warnings about intentional switch statement fallthrough. -->
        <Class name="org.apache.kafka.connect.runtime.WorkerConnector"/>
        <Or>
            <Method name="doStart"/>
            <Method name="pause"/>
        </Or>
        <Bug pattern="SF_SWITCH_FALLTHROUGH"/>
    </Match>

    <Match>
        <!-- Suppress some inconsistent synchronization warnings.  TODO: fix these.  See
             KAFKA-4994. -->
        <Class name="org.apache.kafka.connect.storage.OffsetStorageWriter"/>
        <Bug pattern="IS2_INCONSISTENT_SYNC"/>
    </Match>

    <Match>
        <!-- Suppress a warning about intentional switch statement fallthrough. -->
        <Class name="org.apache.kafka.common.security.authenticator.SaslClientAuthenticator"/>
        <Method name="authenticate"/>
        <Bug pattern="SF_SWITCH_FALLTHROUGH"/>
    </Match>

    <Match>
        <!-- Suppress a spurious warning about a missing default case. -->
        <Or>
            <Class name="org.apache.kafka.common.utils.Crc32"/>
            <Class name="org.apache.kafka.common.utils.PureJavaCrc32C"/>
        </Or>
        <Method name="update"/>
        <Bug pattern="SF_SWITCH_NO_DEFAULT"/>
    </Match>

    <Match>
        <!-- Suppress a warning about intentional missing default cases and fallthroughs. -->
        <Class name="org.apache.kafka.common.utils.Utils"/>
        <Method name="murmur2"/>
        <Or>
            <Bug pattern="SF_SWITCH_NO_DEFAULT"/>
            <Bug pattern="SF_SWITCH_FALLTHROUGH"/>
        </Or>
    </Match>

    <Match>
        <!-- Suppress a spurious warning about locks not being released on all paths.
             This happens because there is an 'if' statement that checks if we have the lock before
             releasing it. -->
        <Class name="org.apache.kafka.clients.producer.internals.BufferPool"/>
        <Method name="allocate"/>
        <Bug pattern="UL_UNRELEASED_LOCK"/>
    </Match>

    <Match>
        <!-- Suppress warnings about synchronizing on the UnsentRequests
             ConcurrentHashMap.  This is done deliberately. -->
        <Package name="org.apache.kafka.clients.consumer.internals"/>
        <Source name="ConsumerNetworkClient.java"/>
        <Bug pattern="JLM_JSR166_UTILCONCURRENT_MONITORENTER"/>
    </Match>

    <Match>
        <!-- Suppress inconsistent synchronization warnings about KerberosLogin#login.
             See KAFKA-4991 for details. -->
        <Class name="org.apache.kafka.common.security.kerberos.KerberosLogin"/>
        <Bug pattern="IS2_INCONSISTENT_SYNC"/>
    </Match>

    <Match>
        <!-- Suppress inconsistent synchronization warnings about
             AbstractCoordinator#coordinator.  See KAFKA-4992 for details.-->
        <Class name="org.apache.kafka.clients.consumer.internals.AbstractCoordinator"/>
        <Bug pattern="IS2_INCONSISTENT_SYNC"/>
    </Match>
</FindBugsFilter>