Program: 14169
Project: 14169
Buggy source:
@Override public void deleteBucket(@Nonnull final ObjectStorageProviderClient backendProvider,@Nonnull Bucket bucketToDelete,@Nullable final String correlationId,@Nullable User requestUser) throws S3Exception {
  Bucket deletingBucket;
  try {
    deletingBucket=BucketMetadataManagers.getInstance().transitionBucketToState(bucketToDelete,BucketState.deleting);
  }
 catch (  IllegalResourceStateException e) {
    LOG.error("String_Node_Str" + correlationId + "String_Node_Str",e);
    throw e;
  }
catch (  MetadataOperationFailureException e) {
    LOG.error("String_Node_Str" + correlationId + "String_Node_Str"+ bucketToDelete.toString()+ "String_Node_Str",e);
    throw e;
  }
  try {
    ObjectMetadataManagers.getInstance().flushUploads(bucketToDelete);
    MpuPartMetadataManagers.getInstance().flushAllParts(bucketToDelete);
  }
 catch (  Exception e) {
    LOG.warn("String_Node_Str",e);
    throw new InternalErrorException(e);
  }
  Predicate<Bucket> deleteBucket=new Predicate<Bucket>(){
    public boolean apply(    Bucket bucket){
      DeleteBucketResponseType response;
      DeleteBucketType deleteRequest=new DeleteBucketType();
      deleteRequest.setBucket(bucket.getBucketUuid());
      try {
        backendProvider.deleteBucket(deleteRequest);
      }
 catch (      NoSuchEntityException|NoSuchBucketException e) {
      }
catch (      S3Exception e) {
        if (!HttpResponseStatus.NOT_FOUND.equals(e.getStatus())) {
          LOG.warn("String_Node_Str",e);
          return false;
        }
      }
      try {
        BucketMetadataManagers.getInstance().deleteBucketMetadata(bucket);
        return true;
      }
 catch (      Exception e) {
        LOG.warn("String_Node_Str" + bucket.getBucketUuid() + "String_Node_Str");
      }
      return false;
    }
  }
;
  try {
    Entities.asTransaction(Bucket.class,deleteBucket).apply(deletingBucket);
  }
 catch (  Exception e) {
    try {
      Bucket foundBucket=BucketMetadataManagers.getInstance().lookupBucket(bucketToDelete.getBucketName());
      LOG.error("String_Node_Str" + correlationId + "String_Node_Str"+ bucketToDelete.toString(),e);
      throw new InternalErrorException(bucketToDelete.getBucketName());
    }
 catch (    Exception ex) {
    }
  }
}

Fixed version (ground truth):
@Override public void deleteBucket(@Nonnull final ObjectStorageProviderClient backendProvider,@Nonnull Bucket bucketToDelete,@Nullable final String correlationId,@Nullable User requestUser) throws S3Exception {
  Bucket deletingBucket;
  try {
    deletingBucket=BucketMetadataManagers.getInstance().transitionBucketToState(bucketToDelete,BucketState.deleting);
  }
 catch (  IllegalResourceStateException e) {
    LOG.trace("String_Node_Str" + correlationId + "String_Node_Str",e);
    throw e;
  }
catch (  MetadataOperationFailureException e) {
    LOG.trace("String_Node_Str" + correlationId + "String_Node_Str"+ bucketToDelete.toString()+ "String_Node_Str",e);
    throw e;
  }
  try {
    ObjectMetadataManagers.getInstance().flushUploads(bucketToDelete);
    MpuPartMetadataManagers.getInstance().flushAllParts(bucketToDelete);
  }
 catch (  Exception e) {
    LOG.warn("String_Node_Str",e);
    throw new InternalErrorException(e);
  }
  Predicate<Bucket> deleteBucket=new Predicate<Bucket>(){
    public boolean apply(    Bucket bucket){
      DeleteBucketResponseType response;
      DeleteBucketType deleteRequest=new DeleteBucketType();
      deleteRequest.setBucket(bucket.getBucketUuid());
      try {
        backendProvider.deleteBucket(deleteRequest);
      }
 catch (      NoSuchEntityException|NoSuchBucketException e) {
      }
catch (      S3Exception e) {
        if (!HttpResponseStatus.NOT_FOUND.equals(e.getStatus())) {
          LOG.warn("String_Node_Str",e);
          return false;
        }
      }
      try {
        BucketMetadataManagers.getInstance().deleteBucketMetadata(bucket);
        return true;
      }
 catch (      Exception e) {
        LOG.warn("String_Node_Str" + bucket.getBucketUuid() + "String_Node_Str",e);
      }
      return false;
    }
  }
;
  try {
    Entities.asTransaction(Bucket.class,deleteBucket).apply(deletingBucket);
  }
 catch (  Exception e) {
    try {
      Bucket foundBucket=BucketMetadataManagers.getInstance().lookupBucket(bucketToDelete.getBucketName());
      LOG.trace("String_Node_Str" + correlationId + "String_Node_Str"+ bucketToDelete.toString(),e);
      throw new InternalErrorException(bucketToDelete.getBucketName());
    }
 catch (    Exception ex) {
    }
  }
}