@Override
public synchronized boolean tryReturnRecordAt(boolean isAtSplitPoint, ByteKey recordStart) {
if (done) {
return false;
}
checkState(!(position == null && !isAtSplitPoint), "The first record must be at a split point");
checkState(
!(recordStart.compareTo(range.getStartKey()) < 0),
"Trying to return record which is before the start key");
checkState(
!(position != null && recordStart.compareTo(position) < 0),
"Trying to return record which is before the last-returned record");
if (position == null) {
range = range.withStartKey(recordStart);
}
position = recordStart;
if (isAtSplitPoint) {
if (!range.containsKey(recordStart)) {
done = true;
return false;
}
++splitPointsSeen;
}
return true;
}
@Override
public synchronized boolean trySplitAtPosition(ByteKey splitPosition) {
// Unstarted.
if (position == null) {
LOG.warn(
"{}: Rejecting split request at {} because no records have been returned.",
this,
splitPosition);
return false;
}
// Started, but not after current position.
if (splitPosition.compareTo(position) <= 0) {
LOG.warn(
"{}: Rejecting split request at {} because it is not after current position {}.",
this,
splitPosition,
position);
return false;
}
// Sanity check.
if (!range.containsKey(splitPosition)) {
LOG.warn(
"{}: Rejecting split request at {} because it is not within the range.",
this,
splitPosition);
return false;
}
range = range.withEndKey(splitPosition);
return true;
}