twill-yarn/src/main/hadoop20/org/apache/twill/internal/yarn/Hadoop20YarnAMClient.java [137:150]:
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  @Override
  protected void addContainerRequest(AMRMClient.ContainerRequest request) {
    amrmClient.addContainerRequest(request);
  }

  @Override
  protected void removeContainerRequest(AMRMClient.ContainerRequest request) {
    amrmClient.removeContainerRequest(request);
  }

  @Override
  protected void updateBlacklist(List<String> blacklistAdditions, List<String> blacklistRemovals) {
    // An empty implementation since Blacklist is not supported in Hadoop-2.0.
    if (recordUnsupportedFeature("blacklist")) {
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twill-yarn/src/main/hadoop21/org/apache/twill/internal/yarn/Hadoop21YarnAMClient.java [109:122]:
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  @Override
  protected void addContainerRequest(AMRMClient.ContainerRequest request) {
    amrmClient.addContainerRequest(request);
  }

  @Override
  protected void removeContainerRequest(AMRMClient.ContainerRequest request) {
    amrmClient.removeContainerRequest(request);
  }

  @Override
  protected void updateBlacklist(List<String> blacklistAdditions, List<String> blacklistRemovals) {
    // An empty implementation since Blacklist is not supported in Hadoop-2.1 AMRMClient.
    if (recordUnsupportedFeature("blacklist")) {
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