go-pulse/swarm/storage/schema.go
Ferenc Szabo c41e1bd1eb swarm/storage: fix garbage collector index skew (#18080)
On file access LDBStore's tryAccessIdx() function created a faulty
GC Index Data entry, because not indexing the ikey correctly.
That caused the chunk addresses/hashes to start with '00' and the last
two digits were dropped. => Incorrect chunk address.

Besides the fix, the commit also contains a schema change which will
run the CleanGCIndex() function to clean the GC index from erroneous
entries.

Note: CleanGCIndex() rebuilds the index from scratch which can take
a really-really long time with a huge DB (possibly an hour).
2018-11-13 15:22:53 +01:00

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package storage
// The DB schema we want to use. The actual/current DB schema might differ
// until migrations are run.
const CurrentDbSchema = DbSchemaHalloween
// There was a time when we had no schema at all.
const DbSchemaNone = ""
// "purity" is the first formal schema of LevelDB we release together with Swarm 0.3.5
const DbSchemaPurity = "purity"
// "halloween" is here because we had a screw in the garbage collector index.
// Because of that we had to rebuild the GC index to get rid of erroneous
// entries and that takes a long time. This schema is used for bookkeeping,
// so rebuild index will run just once.
const DbSchemaHalloween = "halloween"