hadoop/hadoop-hdfs-project/hadoop-hdfs/dev-support/findbugsExcludeFile.xml

<FindBugsFilter>
     <Match>
       <Package name="org.apache.hadoop.record.compiler.generated" />
     </Match>
     <Match>
       <Package name="org.apache.hadoop.hdfs.protocol.proto" />
     </Match>
     <Match>
       <Package name="org.apache.hadoop.hdfs.server.namenode.ha.proto" />
     </Match>
     <Match>
       <Package name="org.apache.hadoop.hdfs.qjournal.protocol" />
     </Match>
     <Match>
       <Bug pattern="EI_EXPOSE_REP" />
     </Match>
     <Match>
       <Bug pattern="EI_EXPOSE_REP2" />
     </Match>
     <Match>
       <Bug pattern="SE_COMPARATOR_SHOULD_BE_SERIALIZABLE" />
     </Match>
     <Match>
       <Class name="~.*_jsp" />
       <Bug pattern="DLS_DEAD_LOCAL_STORE" />
     </Match>
     <Match>
       <Field name="_jspx_dependants" />
       <Bug pattern="UWF_UNWRITTEN_FIELD" />
     </Match>
     <!-- 
       Inconsistent synchronization for Client.Connection.out is
       is intentional to make a connection to be closed instantly. 
     --> 
     <Match>
       <Class name="org.apache.hadoop.ipc.Client$Connection" />
       <Field name="out" />
       <Bug pattern="IS2_INCONSISTENT_SYNC" />
     </Match>
     <!-- 
       Ignore Cross Scripting Vulnerabilities
       We have an input quoting filter that protects us.
     -->
     <Match>
       <Bug code="XSS" />
     </Match>
     <Match>
       <Bug code="HRS" />
     </Match>
     <!--
       Ignore warnings where child class has the same name as
       super class. Classes based on Old API shadow names from
       new API. Should go off after HADOOP-1.0
     -->
     <Match>
       <Class name="~org.apache.hadoop.mapred.*" />
       <Bug pattern="NM_SAME_SIMPLE_NAME_AS_SUPERCLASS" />
     </Match>
     <!--
       Ignore warnings for usage of System.exit. This is
       required and have been well thought out
     -->
     <Match>
       <Class name="org.apache.hadoop.mapred.Child$2" />
       <Method name="run" />
       <Bug pattern="DM_EXIT" />
     </Match>
     <Match>
       <Class name="org.apache.hadoop.mapred.JobTracker" />
       <Method name="addHostToNodeMapping" />
       <Bug pattern="DM_EXIT" />
     </Match>
     <Match>
       <Class name="org.apache.hadoop.mapred.Task" />
       <Or>
       <Method name="done" />
       <Method name="commit" />
       <Method name="statusUpdate" />
       </Or>
       <Bug pattern="DM_EXIT" />
     </Match>
     <Match>
       <Class name="org.apache.hadoop.mapred.Task$TaskReporter" />
       <Method name="run" />
       <Bug pattern="DM_EXIT" />
     </Match>     
     <!--
       We need to cast objects between old and new api objects
     -->
     <Match>
       <Class name="org.apache.hadoop.mapred.OutputCommitter" />
       <Bug pattern="BC_UNCONFIRMED_CAST" />
     </Match>
     <!--
       We intentionally do the get name from the inner class
     -->
     <Match>
       <Class name="org.apache.hadoop.mapred.TaskTracker$MapEventsFetcherThread" />
       <Method name="run" />
       <Bug pattern="IA_AMBIGUOUS_INVOCATION_OF_INHERITED_OR_OUTER_METHOD" />
     </Match>
     <Match>
       <Class name="org.apache.hadoop.mapred.FileOutputCommitter" />
       <Bug pattern="NM_WRONG_PACKAGE_INTENTIONAL" />
     </Match>
     <!--
       Ignoring this warning as resolving this would need a non-trivial change in code 
     -->
     <Match>
       <Class name="org.apache.hadoop.mapred.lib.aggregate.ValueAggregatorBaseDescriptor" />
       <Method name="configure" />
       <Field name="maxNumItems" />
       <Bug pattern="ST_WRITE_TO_STATIC_FROM_INSTANCE_METHOD" />
     </Match>
     <!--
       Comes from org.apache.jasper.runtime.ResourceInjector. Cannot do much.
     -->
     <Match>
       <Class name="org.apache.hadoop.mapred.jobqueue_005fdetails_jsp" />
       <Field name="_jspx_resourceInjector" />
       <Bug pattern="SE_BAD_FIELD" />
     </Match>
     <!--
       Storing textInputFormat and then passing it as a parameter. Safe to ignore.
     -->
     <Match>
       <Class name="org.apache.hadoop.mapred.lib.aggregate.ValueAggregatorJob" />
       <Method name="createValueAggregatorJob" />
       <Bug pattern="DLS_DEAD_STORE_OF_CLASS_LITERAL" />
     </Match>
     <!--
       Can remove this after the upgrade to findbugs1.3.8
     -->
     <Match>
       <Class name="org.apache.hadoop.mapred.lib.db.DBInputFormat" />
       <Method name="getSplits" />
       <Bug pattern="DLS_DEAD_LOCAL_STORE" />
     </Match>
    <!--
      This is a spurious warning. Just ignore
    -->
     <Match>
       <Class name="org.apache.hadoop.mapred.MapTask$MapOutputBuffer" />
       <Field name="kvindex" />
       <Bug pattern="IS2_INCONSISTENT_SYNC" />
     </Match>

     <!-- 
        core changes 
     -->
     <Match>
       <Class name="~org.apache.hadoop.*" />
       <Bug code="MS" />
     </Match>

     <Match>
       <Class name="org.apache.hadoop.fs.FileSystem" />
       <Method name="checkPath" />
       <Bug pattern="ES_COMPARING_STRINGS_WITH_EQ" />
     </Match>

     <Match>
       <Class name="org.apache.hadoop.fs.kfs.KFSOutputStream" />
       <Field name="path" />
       <Bug pattern="URF_UNREAD_FIELD" />
     </Match>

     <Match>
       <Class name="org.apache.hadoop.fs.kfs.KosmosFileSystem" />
       <Method name="initialize" />
       <Bug pattern="DM_EXIT" />
     </Match>

     <Match>
       <Class name="org.apache.hadoop.io.Closeable" />
       <Bug pattern="NM_SAME_SIMPLE_NAME_AS_INTERFACE" />
     </Match>

     <Match>
       <Class name="org.apache.hadoop.security.AccessControlException" />
       <Bug pattern="NM_SAME_SIMPLE_NAME_AS_SUPERCLASS" />
     </Match>

     <Match>
       <Class name="org.apache.hadoop.record.meta.Utils" />
       <Method name="skip" />
       <Bug pattern="BC_UNCONFIRMED_CAST" />
     </Match>

     <!--
        The compareTo method is actually a dummy method that just
        throws excpetions. So, no need to override equals. Ignore
     -->
     <Match>
       <Class name="org.apache.hadoop.record.meta.RecordTypeInfo" />
       <Bug pattern="EQ_COMPARETO_USE_OBJECT_EQUALS" />
     </Match>

     <Match>
       <Class name="org.apache.hadoop.util.ProcfsBasedProcessTree" />
       <Bug pattern="DMI_HARDCODED_ABSOLUTE_FILENAME" />
     </Match>

     <!--
       Streaming, Examples
     -->
     <Match>
       <Class name="org.apache.hadoop.streaming.StreamUtil$TaskId" />
       <Bug pattern="URF_UNREAD_FIELD" />
     </Match>

     <Match>
       <Class name="org.apache.hadoop.examples.DBCountPageView" />
       <Method name="verify" />
       <Bug pattern="OBL_UNSATISFIED_OBLIGATION" />
     </Match>

     <!--
       getTmpInputStreams is pretty much like a stream constructor.
       The newly created streams are not supposed to be closed in the constructor. So ignore
       the OBL warning.
     -->
     <Match>
       <Class name="org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl" />
       <Method name="getTmpInputStreams" />
       <Bug pattern="OBL_UNSATISFIED_OBLIGATION" />
     </Match>

     <!--
      ResponseProccessor is thread that is designed to catch RuntimeException.
     -->
     <Match>
       <Class name="org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer$ResponseProcessor" />
       <Method name="run" />
       <Bug pattern="REC_CATCH_EXCEPTION" />
     </Match>

     <!--
      lastAppliedTxid is carefully unsynchronized in the BackupNode in a couple spots.
      See the comments in BackupImage for justification.
     -->
     <Match>
       <Class name="org.apache.hadoop.hdfs.server.namenode.FSImage" />
       <Field name="lastAppliedTxId" />
       <Bug pattern="IS2_INCONSISTENT_SYNC" />
     </Match>
     <!--
      Findbugs doesn't realize that closing a FilterOutputStream pushes the close down to
      wrapped streams, too.
     -->
     <Match>
       <Class name="org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Saver" />
       <Method name="save" />
       <Bug pattern="OS_OPEN_STREAM" />
     </Match>
     <!--
      the 'metrics' member is sometimes used from synchronized blocks, sometimes not,
      but it's only reset by test cases, so should be fine
     -->
     <Match>
       <Class name="org.apache.hadoop.hdfs.server.namenode.FSEditLog" />
       <Field name="metrics" />
       <Bug pattern="IS2_INCONSISTENT_SYNC" />
     </Match>
     <!--
      This method isn't performance-critical and is much clearer to write as it's written.
      -->
     <Match>
       <Class name="org.apache.hadoop.hdfs.server.datanode.BlockPoolManager" />
       <Method name="doRefreshNamenodes" />
       <Bug category="PERFORMANCE" />
     </Match>
     <!-- Don't complain about System.exit() being called from quit() -->
     <Match>
       <Class name="org.apache.hadoop.hdfs.server.namenode.MetaRecoveryContext" />
       <Method name="quit" />
       <Bug pattern="DM_EXIT" />
     </Match>

     <!-- Don't complain about recoverBlock equality check -->
     <Match>
       <Class name="org.apache.hadoop.hdfs.server.datanode.DataNode" />
       <Method name="recoverBlock" />
       <Bug pattern="EC_UNRELATED_TYPES" />
     </Match>

     <!-- More complex cleanup logic confuses findbugs -->
     <Match>
       <Class name="org.apache.hadoop.hdfs.qjournal.server.Journal" />
       <Method name="persistPaxosData" />
       <Bug pattern="OS_OPEN_STREAM" />
     </Match>

     <!-- Don't complain about LocalDatanodeInfo's anonymous class -->
     <Match>
       <Class name="org.apache.hadoop.hdfs.BlockReaderLocal$LocalDatanodeInfo$1" />
       <Bug pattern="SE_BAD_FIELD_INNER_CLASS" />
     </Match>
     <!-- Only one method increments numFailedVolumes and it is synchronized -->
     <Match>
       <Class name="org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeList" />
       <Field name="numFailedVolumes" />
       <Bug pattern="VO_VOLATILE_INCREMENT" />
     </Match>
     <!-- Access to pendingReceivedRequests is synchronized -->
     <Match>
       <Class name="org.apache.hadoop.hdfs.server.datanode.BPServiceActor" />
       <Method name="notifyNamenodeBlockImmediately" />
       <Field name="pendingReceivedRequests" />
       <Bug pattern="VO_VOLATILE_INCREMENT" />
     </Match>
     <!-- The "LightWeight" classes are explicitly not thread safe -->
     <Match>
       <Class name="org.apache.hadoop.hdfs.util.LightWeightGSet" />
       <Field name="modification" />
       <Bug pattern="VO_VOLATILE_INCREMENT" />
     </Match>
     <Match>
       <Class name="org.apache.hadoop.hdfs.util.LightWeightHashSet" />
       <Field name="modification" />
       <Bug pattern="VO_VOLATILE_INCREMENT" />
     </Match>
     <Match>
       <Class name="org.apache.hadoop.hdfs.util.LightWeightLinkedSet" />
       <Field name="modification" />
       <Bug pattern="VO_VOLATILE_INCREMENT" />
     </Match>
      <!-- Replace System.exit() call with ExitUtil.terminate() -->
     <Match>
       <Class name="org.apache.hadoop.hdfs.tools.JMXGet"/>
       <Method name="main" />
       <Bug pattern="NP_NULL_ON_SOME_PATH" />
     </Match>    
     <Match>
       <Class name="org.apache.hadoop.hdfs.server.datanode.ReplicaInfo" />
       <Method name="setDirInternal" />
       <Bug pattern="DM_STRING_CTOR" />
     </Match>
    <Match>
      <Class name="org.apache.hadoop.hdfs.client.ClientMmapManager" />
      <Method name="create" />
      <Bug pattern="UL_UNRELEASED_LOCK_EXCEPTION_PATH" />
    </Match>
    <Match>
      <Class name="org.apache.hadoop.hdfs.client.ClientMmapManager" />
      <Method name="create" />
      <Bug pattern="UL_UNRELEASED_LOCK" />
    </Match>
    <!-- Manually verified to be okay, we want to throw away the top bit here -->
    <Match>
      <Class name="org.apache.hadoop.hdfs.server.namenode.CachedBlock" />
      <Method name="getReplication" />
      <Bug pattern="ICAST_QUESTIONABLE_UNSIGNED_RIGHT_SHIFT" />
    </Match>
    <Match>
      <Class name="org.apache.hadoop.hdfs.protocol.CacheDirective" />
      <Method name="insertInternal" />
      <Bug pattern="BC_UNCONFIRMED_CAST" />
    </Match>
    <Match>
      <Class name="org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor" />
      <Bug pattern="RV_RETURN_VALUE_IGNORED_BAD_PRACTICE" />
    </Match>

 </FindBugsFilter>