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client-go
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fix: do not call onMemChange in alloc, since it will make the latest block empty, which breaks a precondition for some operations (e.g. revertToCheckpoint) (#632) 

Signed-off-by: ekexium <eke@fastmail.com>
This commit is contained in:
ekexium 2022-12-05 16:43:17 +08:00 committed by GitHub
parent 50651d6bb5
commit ad59ca833a
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1 changed files with 10 additions and 1 deletions
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11
internal/unionstore/memdb_arena.go
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@ -129,7 +129,8 @@ func (a *memdbArena) enlarge(allocSize, blockSize int) {
buf: make([]byte, a.blockSize),
})
a.capacity += uint64(a.blockSize)
a.onMemChange()
// We shall not call a.onMemChange() here, since it will make the latest block empty, which breaks a precondition
// for some operations (e.g. revertToCheckpoint)
}
func (a *memdbArena) onMemChange() {
@ -250,11 +251,15 @@ func (a *nodeAllocator) getNode(addr memdbArenaAddr) *memdbNode {
func (a *nodeAllocator) allocNode(key []byte) (memdbArenaAddr, *memdbNode) {
nodeSize := 8*4 + 2 + kv.FlagBytes + len(key)
prevBlocks := len(a.blocks)
addr, mem := a.alloc(nodeSize, true)
n := (*memdbNode)(unsafe.Pointer(&mem[0]))
n.vptr = nullAddr
n.klen = uint16(len(key))
copy(n.getKey(), key)
if prevBlocks != len(a.blocks) {
a.onMemChange()
}
return addr, n
}
@ -313,6 +318,7 @@ func (hdr *memdbVlogHdr) load(src []byte) {
func (l *memdbVlog) appendValue(nodeAddr memdbArenaAddr, oldValue memdbArenaAddr, value []byte) memdbArenaAddr {
size := memdbVlogHdrSize + len(value)
prevBlocks := len(l.blocks)
addr, mem := l.alloc(size, false)
copy(mem, value)
@ -320,6 +326,9 @@ func (l *memdbVlog) appendValue(nodeAddr memdbArenaAddr, oldValue memdbArenaAddr
hdr.store(mem[len(value):])
addr.off += uint32(size)
if prevBlocks != len(l.blocks) {
l.onMemChange()
}
return addr
}