Benedict created CASSANDRA-8923:
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Summary: Improve MergeIterator performance for binary prefix
comparable data
Key: CASSANDRA-8923
URL: https://issues.apache.org/jira/browse/CASSANDRA-8923
Project: Cassandra
Issue Type: Improvement
Components: Core
Reporter: Benedict
Priority: Minor
Along the same lines as CASSANDRA-8915, only designed to help merges of small
partitions, or those with clustering prefixes that are binary prefix (or byte
order) comparable. The approach in CASSANDRA-8915 will work well for normal
intra-partition merges, but partition keys themselves are typically distributed
by hash, meaning there will very rarely be runs of keys owned by a single
source. A binary trie based merge would perform significantly better here, and
could also be rolled out alongside CASSANDRA-8731 for binary prefix comparable
fields.
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