Enabling the Bloom Filter - Altinity/parquet-regression GitHub Wiki
Bloom Filter
Bloom filter can be applied to: all columns
, no columns at all
or specific columns
All Columns
"options": {
"bloomFilter": "all"
}
Specific Columns
"options": {
"bloomFilter": ["id", "id2", "person.name"]
}
Here the values for bloomFilter
is a list of column paths that we want bloom filter to be applied to. Usually for the regular data types the path is just a name of the column like id
, and for the complex types it depends how deeply the column is nested.
In this example we apply the bloom filter to column name
that is located under the array of tuples with columns name
and age
so the path to name is person.name
.