odh2: second on-disk-header format (insert/update timestamps, larger blobs) - #6102

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markhannum wants to merge 13 commits into

bloomberg:mainfrom

markhannum:odh2

Commits on Aug 4, 2026

bdb: add odh2 on-disk header codec (insert/update timestamps, 32-bit length)

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747e95b
odh2: wire up write-path enablement (per-table attribute + genid48 forcing)

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93b6947
odh2: preserve insert time across updates, refresh update time

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30c3f17
odh2: expose insert/update time via SQL (rowtimestamp odh2-aware, new columns)

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e741e4d
odh2: source comdb2_*_timestamp from the data record on index reads

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9f8e1b2
odh2: fix genid48 forcing to read the format off the parent handle

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3be5ff0
odh2: raise the blob/record size limit to ~2GB for odh2 tables

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e660791
odh2: add randomize_odh2 tunable to fuzz odh1/odh2 coexistence

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707158a
odh2: size the remaining scratch buffers to the odh2 limit

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4850d60
odh2: test the insert/update timestamp columns

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1ef24ce
odh2: test blobs larger than the odh1 256MB ceiling

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ab40924
odh2: test odh1/odh2 coexistence via genid48 conversion

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feba588
odh2: test the randomize_odh2 coexistence fuzzer

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214f265