void completed(Differencer differencer) {
logger.debug(
String.format(
"[repair #%s] Repair completed between %s and %s on %s",
getName(), differencer.r1.endpoint, differencer.r2.endpoint, differencer.cfname));
RepairJob job = activeJobs.get(differencer.cfname);
if (job == null) {
assert terminated;
return;
}
if (job.completedSynchronization(differencer)) {
activeJobs.remove(differencer.cfname);
String remaining =
activeJobs.size() == 0
? ""
: String.format(
" (%d remaining column family to sync for this session)", activeJobs.size());
logger.info(
String.format(
"[repair #%s] %s is fully synced%s", getName(), differencer.cfname, remaining));
if (activeJobs.isEmpty()) completed.signalAll();
}
}
/** clear all RepairJobs and terminate this session. */
public void forceShutdown() {
differencingDone.signalAll();
completed.signalAll();
}
// we don't care about the return value but care about it throwing exception
public void runMayThrow() throws Exception {
logger.info(
String.format(
"[repair #%s] new session: will sync %s on range %s for %s.%s",
getName(), repairedNodes(), range, tablename, Arrays.toString(cfnames)));
if (endpoints.isEmpty()) {
differencingDone.signalAll();
logger.info(
String.format(
"[repair #%s] No neighbors to repair with on range %s: session completed",
getName(), range));
return;
}
// Checking all nodes are live
for (InetAddress endpoint : endpoints) {
if (!FailureDetector.instance.isAlive(endpoint)) {
differencingDone.signalAll();
logger.info(
String.format(
"[repair #%s] Cannot proceed on repair because a neighbor (%s) is dead: session failed",
getName(), endpoint));
return;
}
if (Gossiper.instance.getVersion(endpoint) < MessagingService.VERSION_11 && isSequential) {
logger.info(
String.format(
"[repair #%s] Cannot repair using snapshots as node %s is pre-1.1",
getName(), endpoint));
return;
}
}
AntiEntropyService.instance.sessions.put(getName(), this);
Gossiper.instance.register(this);
FailureDetector.instance.registerFailureDetectionEventListener(this);
try {
// Create and queue a RepairJob for each column family
for (String cfname : cfnames) {
RepairJob job = new RepairJob(cfname);
jobs.offer(job);
activeJobs.put(cfname, job);
}
jobs.peek().sendTreeRequests();
// block whatever thread started this session until all requests have been returned:
// if this thread dies, the session will still complete in the background
completed.await();
if (exception == null) {
logger.info(String.format("[repair #%s] session completed successfully", getName()));
} else {
logger.error(
String.format("[repair #%s] session completed with the following error", getName()),
exception);
throw exception;
}
} catch (InterruptedException e) {
throw new RuntimeException("Interrupted while waiting for repair.");
} finally {
// mark this session as terminated
terminate();
FailureDetector.instance.unregisterFailureDetectionEventListener(this);
Gossiper.instance.unregister(this);
AntiEntropyService.instance.sessions.remove(getName());
}
}