Improve config options for missing and dropping db columns.
Implement actual drop functionality. Signed-off-by: Jason Volk <jason@zemos.net>
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@@ -1091,17 +1091,18 @@
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#
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#rocksdb_stats_level = 1
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# Erases data no longer reachable in the current schema. The developers
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# expect this to be set to true which simplifies the schema and prevents
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# accumulation of old schemas remaining in the codebase forever. If this
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# is set to false, old columns which are not described in the current
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# schema will be ignored rather than erased, leaking their space.
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# Ignores the list of dropped columns set by developers.
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#
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# This can be set to false when moving between versions in ways which are
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# not recommended or otherwise forbidden, or for diagnostic and
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# development purposes; requiring preservation across such movements.
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# This should be set to true when knowingly moving between versions in
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# ways which are not recommended or otherwise forbidden, or for
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# diagnostic and development purposes; requiring preservation across such
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# movements.
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#
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#rocksdb_drop_missing_columns = true
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# The developer's list of dropped columns is meant to safely reduce space
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# by erasing data no longer in use. If this is set to true that storage
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# will not be reclaimed as intended.
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#
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#rocksdb_never_drop_columns = false
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# This is a password that can be configured that will let you login to the
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# server bot account (currently `@conduit`) for emergency troubleshooting
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