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les: historical data garbage collection (#19570)

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This change introduces garbage collection for the light client. Historical
chain data is deleted periodically. If you want to disable the GC, use
the --light.nopruning flag.
This commit is contained in:
gary rong
2020-07-13 17:02:54 +08:00
committed by GitHub
parent b8dd0890b3
commit 6eef141aef
45 changed files with 841 additions and 213 deletions
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2
consensus/clique/clique.go
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@ -369,7 +369,7 @@ func (c *Clique) snapshot(chain consensus.ChainReader, number uint64, hash commo
// at a checkpoint block without a parent (light client CHT), or we have piled
// up more headers than allowed to be reorged (chain reinit from a freezer),
// consider the checkpoint trusted and snapshot it.
if number == 0 || (number%c.config.Epoch == 0 && (len(headers) > params.ImmutabilityThreshold || chain.GetHeaderByNumber(number-1) == nil)) {
if number == 0 || (number%c.config.Epoch == 0 && (len(headers) > params.FullImmutabilityThreshold || chain.GetHeaderByNumber(number-1) == nil)) {
checkpoint := chain.GetHeaderByNumber(number)
if checkpoint != nil {
hash := checkpoint.Hash()