Vinoth Chandar created HUDI-6712:
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Summary: Implement optimized keyed lookup on parquet files
Key: HUDI-6712
URL: https://issues.apache.org/jira/browse/HUDI-6712
Project: Apache Hudi
Issue Type: New Feature
Reporter: Vinoth Chandar
Assignee: Lin Liu
Fix For: 1.0.0
Parquet performs poorly when performing a lookup of specific records, based on
a single key lookup column.
e.g: select * from parquet where key in ("a","b", "c) (SQL)
e.g: List<Records> lookup(parquetFile, Set<String> keys) (code)
Let's implement a reader, that is optimized for this pattern, by scanning least
amount of data.
Requirements:
1. Need to support multiple values for same key.
2. Can assume the file is sorted by the key/lookup field.
3. Should handle non-existence of keys.
4. Should leverage parquet metadata (bloom filters, column index, ... ) to
minimize read read.
5. Must to the minimum about of RPC calls to cloud storage.
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