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PARQUET-1630: add empty compression union for Bloom filter #149

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Aug 13, 2019
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PARQUET-1630: add empty compression union for Bloom filter #149

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10 changes: 10 additions & 0 deletions BloomFilter.md
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Original file line number Diff line number Diff line change
Expand Up @@ -263,6 +263,14 @@ union BloomFilterHash {
1: XxHash XXHASH;
}

/**
* The compression used in the Bloom filter.
**/
struct Uncompressed {}
union BloomFilterCompression {
1: Uncompressed UNCOMPRESSED;
}

/**
* Bloom filter header is stored at beginning of Bloom filter data of each column
* and followed by its bitset.
Expand All @@ -274,6 +282,8 @@ struct BloomFilterPageHeader {
2: required BloomFilterAlgorithm algorithm;
/** The hash function used for Bloom filter. **/
3: required BloomFilterHash hash;
/** The compression used in the Bloom filter **/
4: required BloomFilterCompression compression;
}

struct ColumnMetaData {
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11 changes: 11 additions & 0 deletions src/main/thrift/parquet.thrift
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Expand Up @@ -582,6 +582,15 @@ union BloomFilterHash {
/** xxHash Strategy. **/
1: XxHash XXHASH;
}

/**
* The compression used in the Bloom filter.
**/
struct Uncompressed {}
union BloomFilterCompression {
1: Uncompressed UNCOMPRESSED;
}

/**
* Bloom filter header is stored at beginning of Bloom filter data of each column
* and followed by its bitset.
Expand All @@ -593,6 +602,8 @@ struct BloomFilterHeader {
2: required BloomFilterAlgorithm algorithm;
/** The hash function used for Bloom filter. **/
3: required BloomFilterHash hash;
/** The compression used in the Bloom filter **/
4: required BloomFilterCompression compression;
}

struct PageHeader {
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