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Merge pull request #9050 from colega/use-binary-literals-for-xor-encoding

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Use binary literals for xor chunk encoding
This commit is contained in:
Julien Pivotto 2021-07-05 22:46:38 +02:00 committed by GitHub
commit 62598878dd
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 9 additions and 9 deletions
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18
tsdb/chunkenc/xor.go
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@ -178,16 +178,16 @@ func (a *xorAppender) Append(t int64, v float64) {
case dod == 0:
a.b.writeBit(zero)
case bitRange(dod, 14):
a.b.writeBits(0x02, 2) // '10'
a.b.writeBits(0b10, 2)
a.b.writeBits(uint64(dod), 14)
case bitRange(dod, 17):
a.b.writeBits(0x06, 3) // '110'
a.b.writeBits(0b110, 3)
a.b.writeBits(uint64(dod), 17)
case bitRange(dod, 20):
a.b.writeBits(0x0e, 4) // '1110'
a.b.writeBits(0b1110, 4)
a.b.writeBits(uint64(dod), 20)
default:
a.b.writeBits(0x0f, 4) // '1111'
a.b.writeBits(0b1111, 4)
a.b.writeBits(uint64(dod), 64)
}
@ -344,15 +344,15 @@ func (it *xorIterator) Next() bool {
var sz uint8
var dod int64
switch d {
case 0x00:
case 0b0:
// dod == 0
case 0x02:
case 0b10:
sz = 14
case 0x06:
case 0b110:
sz = 17
case 0x0e:
case 0b1110:
sz = 20
case 0x0f:
case 0b1111:
// Do not use fast because it's very unlikely it will succeed.
bits, err := it.br.readBits(64)
if err != nil {