blueflood-cloudfiles/src/main/java/com/rackspacecloud/blueflood/outputs/cloudfiles/RollupFile.java
public void append(RollupEvent rollup) throws IOException {
        ensureOpen();
        outputStream.write(serializer.toBytes(rollup));
        outputStream.write('\n');
        outputStream.flush();
    }
public void append(RollupEvent rollup) throws IOException {
        ensureOpen();
        outputStream.write(serializer.toBytes(rollup));
        outputStream.write('\n');
        outputStream.flush();
    }
Serialize a Rollup Event and append it to the file.

@param rollup The rollup to append.
@throws IOException