fork of https://github.com/rust-rocksdb/rust-rocksdb for nextgraph
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56 lines
2.4 KiB
56 lines
2.4 KiB
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#pragma once
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#include "rocksdb/db.h"
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#include "rocksdb/status.h"
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namespace ROCKSDB_NAMESPACE {
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namespace experimental {
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// Supported only for Leveled compaction
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Status SuggestCompactRange(DB* db, ColumnFamilyHandle* column_family,
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const Slice* begin, const Slice* end);
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Status SuggestCompactRange(DB* db, const Slice* begin, const Slice* end);
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// Move all L0 files to target_level skipping compaction.
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// This operation succeeds only if the files in L0 have disjoint ranges; this
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// is guaranteed to happen, for instance, if keys are inserted in sorted
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// order. Furthermore, all levels between 1 and target_level must be empty.
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// If any of the above condition is violated, InvalidArgument will be
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// returned.
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Status PromoteL0(DB* db, ColumnFamilyHandle* column_family,
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int target_level = 1);
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struct UpdateManifestForFilesStateOptions {
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// When true, read current file temperatures from FileSystem and update in
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// DB manifest when a temperature other than Unknown is reported and
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// inconsistent with manifest.
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bool update_temperatures = true;
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// TODO: new_checksums: to update files to latest file checksum algorithm
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};
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// Utility for updating manifest of DB directory (not open) for current state
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// of files on filesystem. See UpdateManifestForFilesStateOptions.
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//
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// To minimize interference with ongoing DB operations, only the following
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// guarantee is provided, assuming no IO error encountered:
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// * Only files live in DB at start AND end of call to
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// UpdateManifestForFilesState() are guaranteed to be updated (as needed) in
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// manifest.
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// * For example, new files after start of call to
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// UpdateManifestForFilesState() might not be updated, but that is not
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// typically required to achieve goal of manifest consistency/completeness
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// (because current DB configuration would ensure new files get the desired
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// consistent metadata).
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Status UpdateManifestForFilesState(
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const DBOptions& db_opts, const std::string& db_name,
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const std::vector<ColumnFamilyDescriptor>& column_families,
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const UpdateManifestForFilesStateOptions& opts = {});
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} // namespace experimental
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} // namespace ROCKSDB_NAMESPACE
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