@Override
    public boolean send(LoggerEntry entry) {
        log.log(Level.FINE, "Sending entry " + entry + " to spooler");
        try {
            executor.execute(() -> spooler.write(entry));
        } catch (RejectedExecutionException e) {
            return false;
        }
        return true;
    }
Start processing files, must be called by subclasses
container-search/src/main/java/com/yahoo/search/logging/AbstractSpoolingLogger.java