} else if (item.getStartTimestamp() < _lastValidCheckpoint.getTimestamp()) {
_uncommittedTransactionCount++;
try {
_persistit.getTransactionIndex().injectAbortedTransaction(item.getStartTimestamp());
} catch (final InterruptedException ie) {
throw new PersistitInterruptedException(ie);
}
} else {
/*
* An uncommitted transaction that started after the last
* valid checkpoint is of no interest.