presto-hive/src/main/java/io/prestosql/plugin/hive/util/InternalHiveSplitFactory.java/InternalHiveSplitFactory/getBlockHosts
class InternalHiveSplitFactory:    private static String[] getBlockHosts(BlockLocation blockLocation)
    {
        try {
            return blockLocation.getHosts();
        }
        catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }