PARQUET-41: Add bloom filter. #424
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added 2 commits
August 28, 2017 15:32
Notice that, this change depends on parquet-format change.
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Not sure why thrift-0.7.0 build failed. |
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I close this firstly due to it should depends on parquet-format pull request. |
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Add bloom filter for parquet
Bloom filter is built upon column, and the data is stored after each row group.
Bloom filter size can be set by user or automatically calculated.
Row group filter can filter row group after evaluate predicate on bloom filter data.
Please see related code here: https://docs.google.com/document/d/1mIZ0W24Cr79QHJWN1sQ3dIUc4lAK5AVqozwSwtpFhW8/edit?usp=sharing
Notice that, this change depends on parquet-format change.