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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.
40 lines
1.7 KiB
C++
40 lines
1.7 KiB
C++
// Copyright (C) 2024-present ScyllaDB
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// SPDX-License-Identifier: (LicenseRef-ScyllaDB-Source-Available-1.1 and Apache-2.0)
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#pragma once
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#include "system_keyspace.hh"
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#include "sstables/sstables_registry.hh"
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// Implement the sstables_registry interface using system_keyspace.
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namespace db {
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class system_keyspace_sstables_registry : public sstables::sstables_registry {
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shared_ptr<system_keyspace> _keyspace;
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public:
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system_keyspace_sstables_registry(system_keyspace& keyspace) : _keyspace(keyspace.shared_from_this()) {}
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virtual seastar::future<> create_entry(table_id tid, locator::host_id node_owner, sstring status, sstables::sstable_state state, sstables::entry_descriptor desc) override {
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return _keyspace->sstables_registry_create_entry(tid, node_owner, status, state, desc);
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}
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virtual seastar::future<> update_entry_status(table_id tid, locator::host_id node_owner, sstables::generation_type gen, sstring status) override {
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return _keyspace->sstables_registry_update_entry_status(tid, node_owner, gen, status);
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}
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virtual seastar::future<> update_entry_state(table_id tid, locator::host_id node_owner, sstables::generation_type gen, sstables::sstable_state state) override {
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return _keyspace->sstables_registry_update_entry_state(tid, node_owner, gen, state);
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}
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virtual seastar::future<> delete_entry(table_id tid, locator::host_id node_owner, sstables::generation_type gen) override {
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return _keyspace->sstables_registry_delete_entry(tid, node_owner, gen);
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}
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virtual seastar::future<> sstables_registry_list(table_id tid, locator::host_id node_owner, entry_consumer consumer) override {
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return _keyspace->sstables_registry_list(tid, node_owner, std::move(consumer));
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}
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};
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}
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