zipper

package
v0.4.0 Latest Latest
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 Go to latest Published: Apr 3, 2026 License: MIT Imports: 14 Imported by: 0

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Constants

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Variables

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Functions

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Types

type LeafPageLog added in v0.4.0 

type LeafPageLog interface {
	AppendLeafPage(leafPage []byte) (page.ValuePtr, error)
}

type LeafPageReader added in v0.4.0 

type LeafPageReader interface {
	ReadUnsafe(ptr page.ValuePtr) ([]byte, error)
}

type PageAllocator 

type PageAllocator interface {
	Alloc(hint uint64) (uint64, error)
}

type ParallelMergePressureLevel added in v0.4.0 

type ParallelMergePressureLevel uint8
const (
	ParallelMergePressureNormal ParallelMergePressureLevel = iota
	ParallelMergePressureHigh
	ParallelMergePressureCritical
)

type ParallelMergePressureSource added in v0.4.0 

type ParallelMergePressureSource func() ParallelMergePressureLevel

type Split 

type Split struct {
	Key    []byte
	NodeID uint64
}

type Zipper 

type Zipper struct {
	// contains filtered or unexported fields
}

func New 

func New(p *pager.Pager, a PageAllocator) *Zipper

func (*Zipper) Apply 

func (z *Zipper) Apply(rootID uint64, b *batch.Batch) (uint64, []uint64, adaptive.Metrics, error)

Apply applies the batch to the tree rooted at rootID. Returns the new root page ID, list of retired pages, and commit metrics.

func (*Zipper) CloneWithAllocator 

func (z *Zipper) CloneWithAllocator(a PageAllocator) *Zipper

CloneWithAllocator returns a zipper that shares config/pager with z but uses the provided allocator.

func (*Zipper) SetAdaptiveLeafEncoding added in v0.4.0 

func (z *Zipper) SetAdaptiveLeafEncoding(enabled bool)

func (*Zipper) SetFillTargets 

func (z *Zipper) SetFillTargets(leafPPM, internalPPM uint32)

SetFillTargets configures soft-full thresholds for newly written pages. Targets are in parts-per-million where 1_000_000 means "allow full pages".

func (*Zipper) SetIndexColumnarLeaves added in v0.2.0 

func (z *Zipper) SetIndexColumnarLeaves(enabled bool)

func (*Zipper) SetIndexInternalBaseDelta added in v0.2.0 

func (z *Zipper) SetIndexInternalBaseDelta(enabled bool)

func (*Zipper) SetIndexPackedValuePtr added in v0.3.0 

func (z *Zipper) SetIndexPackedValuePtr(enabled bool)

func (*Zipper) SetLeafPageLog added in v0.4.0 

func (z *Zipper) SetLeafPageLog(log LeafPageLog)

func (*Zipper) SetLeafPageReader added in v0.4.0 

func (z *Zipper) SetLeafPageReader(reader LeafPageReader)

func (*Zipper) SetLeafPrefixCompression 

func (z *Zipper) SetLeafPrefixCompression(enabled bool)

func (*Zipper) SetMaintenanceOpsPerCoalesce added in v0.3.0 

func (z *Zipper) SetMaintenanceOpsPerCoalesce(opsPerCoalesce int)

SetMaintenanceOpsPerCoalesce sets the approximate ops-per-maintenance ratio. Values <= 0 disable maintenance budgeting (full coalesce behavior).

func (*Zipper) SetOuterLeavesInValueLog added in v0.4.0 

func (z *Zipper) SetOuterLeavesInValueLog(enabled bool)

func (*Zipper) SetParallelMergePressureSource added in v0.4.0 

func (z *Zipper) SetParallelMergePressureSource(src ParallelMergePressureSource)

SetParallelMergePressureSource configures an optional pressure signal for the internal-node merge fan-out gate. Nil preserves the baseline thresholds.

func (*Zipper) SetPiggybackCompaction 

func (z *Zipper) SetPiggybackCompaction(enabled bool)

Source Files

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