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Caution
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SSTable Summary file format
struct summary_entry {
char key[...]; // variable-length.
be64 position;
};
struct summary_la {
struct header {
be32 min_index_interval;
be32 size;
be64 memory_size;
be32 sampling_level;
be32 size_at_full_sampling;
} header;
le32 positions[header.size];
summary_entry entries[header.size];
be32 first_key_size;
char first_key[first_key_size];
be32 last_key_size;
char last_key[last_key_size];
};
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