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Posted to commits@cassandra.apache.org by "Branimir Lambov (Jira)" <ji...@apache.org> on 2023/07/19 08:39:00 UTC
[jira] [Created] (CASSANDRA-18677) BTI format's decision to preload partition index is incorrect
Branimir Lambov created CASSANDRA-18677:
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Summary: BTI format's decision to preload partition index is incorrect
Key: CASSANDRA-18677
URL: https://issues.apache.org/jira/browse/CASSANDRA-18677
Project: Cassandra
Issue Type: Bug
Components: Local/SSTable
Reporter: Branimir Lambov
On load, BTI format SSTables are supposed to walk through the partition index when the SSTable does not have a bloom filter, to prefetch the index in cache.
This decision [is currently inverted|https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/io/sstable/format/bti/BtiTableReaderLoadingBuilder.java#L125C62-L125C62], causing both an unnecessary preload when a filter is present, and making filterless sstables inefficient.
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