/** Compute file paths and key values based on key ranges. */
@Override
public void finalize(Analyzer analyzer) throws InternalException {
Preconditions.checkNotNull(keyRanges);
for (HdfsPartition p : tbl.getPartitions()) {
if (p.getFileDescriptors().size() == 0) {
// No point scanning partitions that have no data
continue;
}
Preconditions.checkState(p.getPartitionValues().size() == tbl.getNumClusteringCols());
// check partition key values against key ranges, if set
Preconditions.checkState(keyRanges.size() == p.getPartitionValues().size());
boolean matchingPartition = true;
for (int i = 0; i < keyRanges.size(); ++i) {
ValueRange keyRange = keyRanges.get(i);
if (keyRange != null && !keyRange.isInRange(analyzer, p.getPartitionValues().get(i))) {
matchingPartition = false;
break;
}
}
if (!matchingPartition) {
// skip this partition, it's outside the key ranges
continue;
}
// HdfsPartition is immutable, so it's ok to copy by reference
partitions.add(p);
}
}
