final long tsv = vh2ts(versionHandle);
final TransactionStatus status = getStatus(tsv);
if (status == null || status.getTs() != tsv || status.getTc() != ABORTED) {
throw new IllegalArgumentException("No such aborted transaction " + versionHandle);
}
return status.decrementMvvCount();
}
/**
* Compute hash index for a given timestamp.
*