wgtmac opened a new pull request, #194:
URL: https://github.com/apache/parquet-format/pull/194
The specs has only added `bloom_filter_offset` to locate the bloom filter.
The reader cannot load the bloom filter in a single shot until it parses the
bloom filter header to get the total size.
```thrift
struct ColumnMetaData {
/** Byte offset from beginning of file to Bloom filter data. **/
14: optional i64 bloom_filter_offset;
}
```
This patch proposes to add an optional bloom_filter_length field to track
the size of bloom filter to facilitate I/O scheduling. The specs already do the
similar things for column index and offset index.
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