/**
* Submit differencers for running. All tree *must* have been received before this is called.
*/
public void submitDifferencers() {
// We need to difference all trees one against another
for (int i = 0; i < trees.size() - 1; ++i) {
TreeResponse r1 = trees.get(i);
for (int j = i + 1; j < trees.size(); ++j) {
TreeResponse r2 = trees.get(j);
Differencer differencer = new Differencer(cfname, r1, r2);
logger.debug("Queueing comparison {}", differencer);
differencers.add(differencer);
}
}
differencers.start();
trees.clear(); // allows gc to do its thing
}
/** Send merkle tree request to every involved neighbor. */
public void sendTreeRequests() {
// send requests to all nodes
List<InetAddress> allEndpoints = new ArrayList<InetAddress>(endpoints);
allEndpoints.add(FBUtilities.getBroadcastAddress());
if (isSequential) makeSnapshots(endpoints);
for (InetAddress endpoint : allEndpoints)
treeRequests.add(
new TreeRequest(getName(), endpoint, range, new CFPair(tablename, cfname)));
logger.info(
String.format(
"[repair #%s] requesting merkle trees for %s (to %s)",
getName(), cfname, allEndpoints));
treeRequests.start();
requestsSent.signalAll();
}
/**
* Add a new received tree and return the number of remaining tree to be received for the job
* to be complete.
*
* <p>Callers may assume exactly one addTree call will result in zero remaining endpoints.
*/
public synchronized int addTree(TreeRequest request, MerkleTree tree) {
// Wait for all request to have been performed (see #3400)
try {
requestsSent.await();
} catch (InterruptedException e) {
throw new AssertionError("Interrupted while waiting for requests to be sent");
}
assert request.cf.right.equals(cfname);
trees.add(new TreeResponse(request.endpoint, tree));
return treeRequests.completed(request);
}
/** @return true if the @param differencer was the last remaining */
synchronized boolean completedSynchronization(Differencer differencer) {
return differencers.completed(differencer) == 0;
}