/** Return all of the neighbors with whom we share the provided range. */
static Set<InetAddress> getNeighbors(String table, Range<Token> toRepair) {
StorageService ss = StorageService.instance;
Map<Range<Token>, List<InetAddress>> replicaSets = ss.getRangeToAddressMap(table);
Range<Token> rangeSuperSet = null;
for (Range<Token> range : ss.getLocalRanges(table)) {
if (range.contains(toRepair)) {
rangeSuperSet = range;
break;
} else if (range.intersects(toRepair)) {
throw new IllegalArgumentException(
"Requested range intersects a local range but is not fully contained in one; this would lead to imprecise repair");
}
}
if (rangeSuperSet == null || !replicaSets.containsKey(toRepair)) return Collections.emptySet();
Set<InetAddress> neighbors = new HashSet<InetAddress>(replicaSets.get(rangeSuperSet));
neighbors.remove(FBUtilities.getBroadcastAddress());
// Excluding all node with version <= 0.7 since they don't know how to
// create a correct merkle tree (they build it over the full range)
Iterator<InetAddress> iter = neighbors.iterator();
while (iter.hasNext()) {
InetAddress endpoint = iter.next();
if (Gossiper.instance.getVersion(endpoint) <= MessagingService.VERSION_07) {
logger.info(
"Excluding "
+ endpoint
+ " from repair because it is on version 0.7 or sooner. You should consider updating this node before running repair again.");
iter.remove();
}
}
return neighbors;
}
@Override
public void init(String keyspace) {
Iterator<InetAddress> hostiter = hosts.iterator();
while (hostiter.hasNext()) {
try {
// Query endpoint to ranges map and schemas from thrift
InetAddress host = hostiter.next();
Cassandra.Client client =
createThriftClient(
host.getHostAddress(), rpcPort, this.user, this.passwd, this.transportFactory);
setPartitioner(client.describe_partitioner());
Token.TokenFactory tkFactory = getPartitioner().getTokenFactory();
for (TokenRange tr : client.describe_ring(keyspace)) {
Range<Token> range =
new Range<>(
tkFactory.fromString(tr.start_token),
tkFactory.fromString(tr.end_token),
getPartitioner());
for (String ep : tr.endpoints) {
addRangeForEndpoint(range, InetAddress.getByName(ep));
}
}
String query =
String.format(
"SELECT * FROM %s.%s WHERE keyspace_name = '%s'",
Keyspace.SYSTEM_KS, SystemKeyspace.SCHEMA_COLUMNFAMILIES_CF, keyspace);
CqlResult result =
client.execute_cql3_query(
ByteBufferUtil.bytes(query), Compression.NONE, ConsistencyLevel.ONE);
for (CqlRow row : result.rows) {
CFMetaData metadata = CFMetaData.fromThriftCqlRow(row);
knownCfs.put(metadata.cfName, metadata);
}
break;
} catch (Exception e) {
if (!hostiter.hasNext())
throw new RuntimeException("Could not retrieve endpoint ranges: ", e);
}
}
}