protected boolean skipKVsNewerThanReadpoint() throws IOException {
long readPoint = MultiVersionConsistencyControl.getThreadReadPoint();
// We want to ignore all key-values that are newer than our current
// readPoint
while (enforceMVCC && cur != null && (cur.getMemstoreTS() > readPoint)) {
hfs.next();
cur = hfs.getKeyValue();
}
if (cur == null) {
close();
return false;
}
// For the optimisation in HBASE-4346, we set the KV's memstoreTS to
// 0, if it is older than all the scanners' read points. It is possible
// that a newer KV's memstoreTS was reset to 0. But, there is an
// older KV which was not reset to 0 (because it was
// not old enough during flush). Make sure that we set it correctly now,
// so that the comparision order does not change.
if (cur.getMemstoreTS() <= readPoint) {
cur.setMemstoreTS(0);
}
return true;
}
public boolean reseek(KeyValue key) throws IOException {
seekCount.incrementAndGet();
try {
try {
if (!reseekAtOrAfter(hfs, key)) {
close();
return false;
}
cur = hfs.getKeyValue();
return skipKVsNewerThanReadpoint();
} finally {
realSeekDone = true;
}
} catch (IOException ioe) {
throw new IOException("Could not reseek " + this + " to key " + key, ioe);
}
}