hadoop/hadoop-common-project/hadoop-registry/dev-support/findbugs-exclude.xml

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<FindBugsFilter>
  <Match>
    <Class name="org.apache.hadoop.registry.server.dns.RegistryDNS" />
    <Method name="addNIOTCP" />
    <Bug pattern="RV_RETURN_VALUE_IGNORED_BAD_PRACTICE" />
  </Match>
  <Match>
    <Class name="org.apache.hadoop.registry.server.dns.RegistryDNS" />
    <Method name="addNIOUDP" />
    <Bug pattern="RV_RETURN_VALUE_IGNORED_BAD_PRACTICE" />
  </Match>
  <Match>
    <Class name="org.apache.hadoop.registry.server.dns.RegistryDNS" />
    <Method name="serveNIOTCP" />
    <Bug pattern="RV_RETURN_VALUE_IGNORED_BAD_PRACTICE" />
  </Match>
</FindBugsFilter>