@Override public Boolean call() throws Exception { if (!isComplete() && null != maybeSendSpeculativeRead(heardFromHostsBitSet)) { if (LOG.isDebugEnabled()) { LOG.debug("Send speculative read for {}. Hosts sent are {}, " + " Hosts heard are {}, ensemble is {}.", this, sentToHosts, heardFromHostsBitSet, ensemble); } return true; } return false; } });