1. A method by a log record processing computer comprising: receiving a log record as part of a stream of log records from a host machine node, the log record comprising terms; determining frequency of occurrence of the terms across the log records of the stream; based on the frequency of occurrence satisfying a defined frequency threshold: selecting a frequency partitioned Bloom filter vector from among a plurality of Bloom filter vectors in a repository based on the frequency; and updating the frequency partitioned Bloom filter vector in the repository based on the terms; storing an identifier for the log record associated with the frequency partitioned Bloom filter vector; and based on the frequency of occurrence not satisfying the defined frequency range: identifying a type identifier based on the terms; selecting a type identifier partitioned Bloom filter vector from among the plurality of Bloom filter vectors in the repository based on the type identifier; updating the type identifier partitioned Bloom filter vector in the repository based on the terms; and storing an identifier for the log record associated with the type identifier partitioned Bloom filter vector.