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c40842f60a
Add a node_owner column (locator::host_id) to system.sstables and make it part of the partition key, so the primary key becomes PRIMARY KEY ((table_id, node_owner), generation). This is the first step toward moving the sstables registry into system_distributed: once distributed, each node's startup scan must read only the rows it owns, which requires the owning node to be part of the partition key. Partitioning by (table_id, node_owner) turns that scan into a single-partition read of exactly the local node's rows. The new column is populated via sstables_manager::get_local_host_id(). No backward compatibility is preserved; the feature is experimental and gated by keyspace-storage-options.
32 lines
1.4 KiB
C++
32 lines
1.4 KiB
C++
// Copyright (C) 2024-present ScyllaDB
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// SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
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#pragma once
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#include "open_info.hh"
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#include <seastar/core/sstring.hh>
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#include <seastar/core/future.hh>
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#include "locator/host_id.hh"
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#include "schema/schema_fwd.hh"
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#include "seastarx.hh"
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namespace sstables {
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// sstables_manager needs to store the names of its sstables somewhere, when
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// using object storage. This is system_keyspace, but for modularity we hide
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// it behind this interface.
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class sstables_registry {
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public:
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virtual ~sstables_registry();
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virtual future<> create_entry(table_id tid, locator::host_id node_owner, sstring status, sstable_state state, sstables::entry_descriptor desc) = 0;
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virtual future<> update_entry_status(table_id tid, locator::host_id node_owner, sstables::generation_type gen, sstring status) = 0;
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virtual future<> update_entry_state(table_id tid, locator::host_id node_owner, sstables::generation_type gen, sstables::sstable_state state) = 0;
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virtual future<> delete_entry(table_id tid, locator::host_id node_owner, sstables::generation_type gen) = 0;
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using entry_consumer = noncopyable_function<future<>(sstring status, sstables::sstable_state state, sstables::entry_descriptor desc)>;
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virtual future<> sstables_registry_list(table_id tid, locator::host_id node_owner, entry_consumer consumer) = 0;
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};
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} // namespace sstables
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