| Class | Description | 
|---|---|
| BloomFilter | BloomFilter is a probabilistic data structure for set membership check. | 
| BloomFilter.BitSet | Bare metal bit set implementation. | 
| BloomFilterIO | |
| BloomFilterUtf8 | This class represents the fix from ORC-101 where we fixed the bloom filter
 from using the JVM's default character set to always using UTF-8. | 
| CuckooSetBytes | A high-performance set implementation used to support fast set membership testing,
 using Cuckoo hashing. | 
| Murmur3 | Murmur3 is successor to Murmur2 fast non-crytographic hash algorithms. | 
| StreamWrapperFileSystem | This class provides an adaptor so that tools that want to read an ORC
 file from an FSDataInputStream can do so. | 
| Enum | Description | 
|---|---|
| BloomFilterIO.Encoding | 
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