fix: Allow querying of 9th, 19th, 29th, etc collections (#2819)

## Relevant issue(s) Resolves #2810 ## Description Allows querying of 9th, 19th, 29th, etc collections. The fetcher calls `PrefixEnd` which causes the start prefix to be (e.g.) `"/9"` and the end `"/10"` causing nothing to be returned to the user. This PR fixes that by encoding the DataStore CollectionRootIDs as variable sized BigEndians. #2818 has been broken out of this as it is not a user-visible issue atm and resolving it is a bit more involved due to some legacy tech. debt.
sourcenetwork · Jul 9, 2024 · 1acc084 · 1acc084
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diff --git a/docs/data_format_changes/i2810-allow-query-of-nth-cols.md b/docs/data_format_changes/i2810-allow-query-of-nth-cols.md
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+# Allow querying of 9th, 19th, 29th, etc collections
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+The way collection root id was encoded in the datastore has changed from a human friendly string representation to a variable-size, big endian, machine-friendly representation.