druid/codestyle/spotbugs-exclude.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
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  ~ or more contributor license agreements.  See the NOTICE file
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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>
    <Match>
        <Or>
            <Class name="org.apache.druid.sql.calcite.parser.SimpleCharStream"/>
            <Class name="org.apache.druid.sql.calcite.parser.TokenMgrError"/>
            <Class name="org.apache.druid.sql.calcite.parser.Token"/>
            <Class name="org.apache.druid.sql.calcite.parser.DruidSqlParserImplTokenManager"/>
            <Class name="org.apache.druid.sql.calcite.parser.DruidSqlParserImplConstants"/>
            <Class name="org.apache.druid.sql.calcite.parser.DruidSqlParserImpl"/>
            <Class name="org.apache.druid.sql.calcite.parser.DruidSqlParserImpl$JJCalls"/>
        </Or>
    </Match>
    <!-- Ignore "equals" bugs for JsonInclude filter classes. They rely on strange-looking "equals" methods. -->
    <Match>
        <And>
            <Bug pattern="EQ_CHECK_FOR_OPERAND_NOT_COMPATIBLE_WITH_THIS"/>
            <Or>
                <Class name="org.apache.druid.jackson.DefaultTrueJsonIncludeFilter"/>
                <Class name="org.apache.druid.java.util.common.StringEncodingDefaultUTF16LEJsonIncludeFilter"/>
                <Class name="org.apache.druid.query.scan.ScanQuery$ScanRowsLimitJsonIncludeFilter"/>
                <Class name="org.apache.druid.query.scan.ScanQuery$ScanTimeOrderJsonIncludeFilter"/>
                <Class name="org.apache.druid.query.scan.ScanQuery$BatchSizeJsonIncludeFilter"/>
                <Class name="org.apache.druid.query.groupby.orderby.DefaultLimitSpec$LimitJsonIncludeFilter"/>
                <Class name="org.apache.druid.segment.VirtualColumns$JsonIncludeFilter"/>
            </Or>
        </And>
    </Match>
    <Match>
        <And>
            <Bug pattern="SE_BAD_FIELD_STORE" />
            <Class name="org.apache.druid.server.AsyncQueryForwardingServlet" />
        </And>
    </Match>
    <Match>
        <And>
            <Bug pattern="URF_UNREAD_PUBLIC_OR_PROTECTED_FIELD" />
            <Class name="org.apache.druid.sql.calcite.planner.CapturedState" />
        </And>
    </Match>
    <Match>
        <!-- Spotbugs doesn't like the MAGIC array -->
        <And>
            <Bug pattern="MS_MUTABLE_ARRAY" />
            <Class name="org.apache.druid.frame.file.FrameFileWriter" />
        </And>
    </Match>
    <Match>
        <!-- Spotbugs doesn't like awaiting a latch without checking return value -->
        <And>
            <Bug pattern="RV_RETURN_VALUE_IGNORED" />
            <Class name="org.apache.druid.msq.indexing.MSQWorkerTaskLauncher" />
        </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>