_refresher = new NRTManagerReopenThread(getNRTManager(), targetMinStaleSec * 10, targetMinStaleSec);
_refresher.setName("Refresh Thread [" + _tableContext.getTable() + "/" + shardContext.getShard() + "]");
_refresher.setDaemon(true);
_refresher.start();
simpleTimer.stop("nrtSetup");
simpleTimer.log(LOG);
}
/**
* The snapshots directory contains a file per snapshot.
* Name of the file is the snapshot name and it stores the segments filename