druid/codestyle/spotbugs-exclude.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
  ~ Licensed to the Apache Software Foundation (ASF) under one
  ~ or more contributor license agreements.  See the NOTICE file
  ~ distributed with this work for additional information
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  ~ to you under the Apache License, Version 2.0 (the
  ~ "License"); you may not use this file except in compliance
  ~ with the License.  You may obtain a copy of the License at
  ~
  ~   http://www.apache.org/licenses/LICENSE-2.0
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  ~ Unless required by applicable law or agreed to in writing,
  ~ software distributed under the License is distributed on an
  ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  ~ KIND, either express or implied.  See the License for the
  ~ specific language governing permissions and limitations
  ~ under the License.
  -->

<!--
  To enforce Spotbugs into the codebase, first, all the errors are
  ignored, so we can add them one by one.

  Some of the bugs will only occur once or twice on the codebase,
  while others will occur potentially a lot.

  Reference: https://github.com/apache/druid/pull/7894/files
-->
<FindBugsFilter>
    <!-- Ignore "equals" bugs for JsonInclude filter classes. They rely on strange-looking "equals" methods. -->
    <Match>
        <And>
            <Bug pattern="EQ_CHECK_FOR_OPERAND_NOT_COMPATIBLE_WITH_THIS"/>
            <Or>
                <Class name="org.apache.druid.query.scan.ScanQuery$ScanRowsLimitJsonIncludeFilter"/>
                <Class name="org.apache.druid.query.groupby.orderby.DefaultLimitSpec$LimitJsonIncludeFilter"/>
            </Or>
        </And>
    </Match>

    <Bug pattern="AT_OPERATION_SEQUENCE_ON_CONCURRENT_ABSTRACTION"/>
    <Bug pattern="BC_UNCONFIRMED_CAST"/>
    <Bug pattern="BIT_SIGNED_CHECK_HIGH_BIT"/>
    <Bug pattern="BX_UNBOXING_IMMEDIATELY_REBOXED"/>
    <Bug pattern="CN_IDIOM_NO_SUPER_CALL"/>
    <Bug pattern="CN_IMPLEMENTS_CLONE_BUT_NOT_CLONEABLE"/>
    <Bug pattern="DC_DOUBLECHECK"/>
    <Bug pattern="DM_BOXED_PRIMITIVE_FOR_PARSING"/>
    <Bug pattern="DM_EXIT"/>
    <Bug pattern="DP_CREATE_CLASSLOADER_INSIDE_DO_PRIVILEGED"/>
    <Bug pattern="EI_EXPOSE_REP"/>
    <Bug pattern="EI_EXPOSE_REP2"/>
    <Bug pattern="EQ_COMPARETO_USE_OBJECT_EQUALS"/>
    <Bug pattern="EQ_DOESNT_OVERRIDE_EQUALS"/>
    <Bug pattern="EQ_UNUSUAL"/>
    <Bug pattern="ES_COMPARING_PARAMETER_STRING_WITH_EQ"/>
    <Bug pattern="FE_FLOATING_POINT_EQUALITY"/>
    <Bug pattern="HE_EQUALS_USE_HASHCODE"/>
    <Bug pattern="IA_AMBIGUOUS_INVOCATION_OF_INHERITED_OR_OUTER_METHOD"/>
    <Bug pattern="ICAST_IDIV_CAST_TO_DOUBLE"/>
    <Bug pattern="ICAST_INT_CAST_TO_DOUBLE_PASSED_TO_CEIL"/>
    <Bug pattern="ICAST_QUESTIONABLE_UNSIGNED_RIGHT_SHIFT"/>
    <Bug pattern="IS2_INCONSISTENT_SYNC"/>
    <Bug pattern="JLM_JSR166_UTILCONCURRENT_MONITORENTER"/>
    <Bug pattern="JLM_JSR166_UTILCONCURRENT_MONITORENTER"/>
    <Bug pattern="MS_FINAL_PKGPROTECT"/>
    <Bug pattern="MS_PKGPROTECT"/>
    <Bug pattern="NP_EQUALS_SHOULD_HANDLE_NULL_ARGUMENT"/>
    <Bug pattern="NP_GUARANTEED_DEREF"/>
    <Bug pattern="NP_LOAD_OF_KNOWN_NULL_VALUE"/>
    <Bug pattern="NP_METHOD_PARAMETER_TIGHTENS_ANNOTATION"/>
    <Bug pattern="NP_NONNULL_FIELD_NOT_INITIALIZED_IN_CONSTRUCTOR"/>
    <Bug pattern="NP_NULL_ON_SOME_PATH"/>
    <Bug pattern="NP_NULL_ON_SOME_PATH_FROM_RETURN_VALUE"/>
    <Bug pattern="NP_NULL_ON_SOME_PATH_MIGHT_BE_INFEASIBLE"/>
    <Bug pattern="NP_NULL_PARAM_DEREF"/>
    <Bug pattern="NP_NULL_PARAM_DEREF_NONVIRTUAL"/>
    <Bug pattern="NP_PARAMETER_MUST_BE_NONNULL_BUT_MARKED_AS_NULLABLE"/>
    <Bug pattern="NS_DANGEROUS_NON_SHORT_CIRCUIT"/>
    <Bug pattern="OBL_UNSATISFIED_OBLIGATION"/>
    <Bug pattern="OS_OPEN_STREAM"/>
    <Bug pattern="RCN_REDUNDANT_NULLCHECK_OF_NONNULL_VALUE"/>
    <Bug pattern="RCN_REDUNDANT_NULLCHECK_WOULD_HAVE_BEEN_A_NPE"/>
    <Bug pattern="REC_CATCH_EXCEPTION"/>
    <Bug pattern="RV_RETURN_VALUE_IGNORED_BAD_PRACTICE"/>
    <Bug pattern="RV_RETURN_VALUE_IGNORED_NO_SIDE_EFFECT"/>
    <Bug pattern="SBSC_USE_STRINGBUFFER_CONCATENATION"/>
    <Bug pattern="SE_BAD_FIELD"/>
    <Bug pattern="SE_COMPARATOR_SHOULD_BE_SERIALIZABLE"/>
    <Bug pattern="SF_SWITCH_FALLTHROUGH"/>
    <Bug pattern="SF_SWITCH_NO_DEFAULT"/>
    <Bug pattern="SR_NOT_CHECKED"/>
    <Bug pattern="SWL_SLEEP_WITH_LOCK_HELD"/>
    <Bug pattern="UL_UNRELEASED_LOCK_EXCEPTION_PATH"/>
    <Bug pattern="URF_UNREAD_FIELD"/>
</FindBugsFilter>