Examples with RepairedDataTracker org.apache.cassandra.service.reads.repair.RepairedDataTracker used on opensource projects

Example 1 with RepairedDataTracker

use of org.apache.cassandra.service.reads.repair.RepairedDataTracker in project cassandra by apache.

the class DataResolver method resolve.

public PartitionIterator resolve() {
    // We could get more responses while this method runs, which is ok (we're happy to ignore any response not here
    // at the beginning of this method), so grab the response count once and use that through the method.
    Collection<Message<ReadResponse>> messages = responses.snapshot();
    assert !any(messages, msg -> msg.payload.isDigestResponse());
    E replicas = replicaPlan().candidates().select(transform(messages, Message::from), false);
    // If requested, inspect each response for a digest of the replica's repaired data set
    RepairedDataTracker repairedDataTracker = trackRepairedStatus ? new RepairedDataTracker(getRepairedDataVerifier(command)) : null;
    if (repairedDataTracker != null) {
        messages.forEach(msg -> {
            if (msg.payload.mayIncludeRepairedDigest() && replicas.byEndpoint().get(msg.from()).isFull()) {
                repairedDataTracker.recordDigest(msg.from(), msg.payload.repairedDataDigest(), msg.payload.isRepairedDigestConclusive());
            }
        });
    }
    if (!needsReplicaFilteringProtection()) {
        ResolveContext context = new ResolveContext(replicas);
        return resolveWithReadRepair(context, i -> shortReadProtectedResponse(i, context), UnaryOperator.identity(), repairedDataTracker);
    }
    return resolveWithReplicaFilteringProtection(replicas, repairedDataTracker);
}