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options.go
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options.go
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/*
* Copyright 2017 Dgraph Labs, Inc. and Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package options
// ChecksumVerificationMode tells when should DB verify checksum for SSTable blocks.
type ChecksumVerificationMode int
const (
// NoVerification indicates DB should not verify checksum for SSTable blocks.
NoVerification ChecksumVerificationMode = iota
// OnTableRead indicates checksum should be verified while opening SSTtable.
OnTableRead
// OnBlockRead indicates checksum should be verified on every SSTable block read.
OnBlockRead
// OnTableAndBlockRead indicates checksum should be verified
// on SSTable opening and on every block read.
OnTableAndBlockRead
)
// CompressionType specifies how a block should be compressed.
type CompressionType uint32
const (
// None mode indicates that a block is not compressed.
None CompressionType = 0
// Snappy mode indicates that a block is compressed using Snappy algorithm.
Snappy CompressionType = 1
// ZSTD mode indicates that a block is compressed using ZSTD algorithm.
ZSTD CompressionType = 2
)