{
logger.debug("reading digest from {}", digestPoint);
// (We lazy-construct the digest Message object since it may not be necessary if we
// are doing a local digest read, or no digest reads at all.)
if (producer == null)
producer = new CachingMessageProducer(digestCommand);
MessagingService.instance().sendRR(producer, digestPoint, handler);
}
}
}
// read results and make a second pass for any digest mismatches
List<RepairCallback<Row>> repairResponseHandlers = null;
for (int i = 0; i < commands.size(); i++)
{
ReadCallback<Row> handler = readCallbacks.get(i);
Row row;
ReadCommand command = commands.get(i);
try
{
long startTime2 = System.currentTimeMillis();
row = handler.get(); // CL.ONE is special cased here to ignore digests even if some have arrived
if (row != null)
rows.add(row);
if (logger.isDebugEnabled())
logger.debug("Read: " + (System.currentTimeMillis() - startTime2) + " ms.");
}
catch (TimeoutException ex)
{
if (logger.isDebugEnabled())
logger.debug("Read timeout: {}", ex.toString());
throw ex;
}
catch (DigestMismatchException ex)
{
if (logger.isDebugEnabled())
logger.debug("Digest mismatch: {}", ex.toString());
RowRepairResolver resolver = new RowRepairResolver(command.table, command.key);
RepairCallback<Row> repairHandler = new RepairCallback<Row>(resolver, handler.endpoints);
MessageProducer producer = new CachingMessageProducer(command);
for (InetAddress endpoint : handler.endpoints)
MessagingService.instance().sendRR(producer, endpoint, repairHandler);
if (repairResponseHandlers == null)
repairResponseHandlers = new ArrayList<RepairCallback<Row>>();