Module statistics 

Statistics.db parser for Cassandra 5+ SSTable format

This module provides comprehensive parsing of Statistics.db files which contain detailed metadata about SSTable contents including row counts, min/max timestamps, column statistics, and other metadata for efficient query planning.

Structs

ColumnStatistics

Per-column statistics for query optimization

CompressionStatistics

Compression algorithm performance statistics

PartitionSizeBucket

Partition size distribution bucket

PartitionStatistics

Partition size distribution for efficient range queries

RowSizeBucket

Row size distribution bucket

RowStatistics

Row count and distribution statistics

SSTableStatistics

Comprehensive SSTable statistics extracted from Statistics.db

StatisticsAnalyzer

Statistics analyzer for enhanced reporting

StatisticsHeader

Statistics.db file header with version and metadata Updated to support both legacy and enhanced formats

StatisticsSummary

Human-readable statistics summary

TableStatistics

Table-level aggregated statistics

TimestampStatistics

Timestamp range and TTL statistics

ValueFrequency

Value frequency information for column statistics

Functions

parse_column_statistics

Parse column-level statistics

parse_compression_statistics

Parse compression performance statistics

parse_metadata_section

Parse additional metadata section

parse_partition_size_bucket

Parse a partition size histogram bucket

parse_partition_statistics

Parse partition size distribution statistics

parse_row_size_bucket

Parse a row size histogram bucket

parse_row_statistics

Parse row count and distribution statistics

parse_single_column_statistics

Parse statistics for a single column

parse_statistics_file

Parse the complete Statistics.db file

parse_statistics_header

Parse the Statistics.db file header with authoritative format detection

parse_table_statistics

Parse table-level statistics

parse_timestamp_statistics

Parse timestamp range statistics

parse_value_frequency

Parse a value frequency entry

serialize_statistics

Serialize Statistics structure to bytes (for testing and validation)