mirror of
https://github.com/scylladb/scylladb.git
synced 2026-06-09 08:23:29 +00:00
425e3b1182
Currently, gossip uses the updates of the gossip heartbeat from gossip messages to decide if a node is up or down. This means if a node is actually down but the gossip messages are delayed in the network, the marking of node down can be delayed. For example, a node sends 20 gossip messages in 20 seconds before it is dead. Each message is delayed 15 seconds by the network for some reason. A node receives those delayed messages one after another. Those delayed messages will prevent this node from being marked as down. Because heartbeat update is received just before the threshold to mark a node down is triggered which is around 20 seconds by default. As a result, this node will not be marked as down in 20 * 15 seconds = 300 seconds, much longer than the ~20 seconds node down detection time in normal cases. In this patch, a new failure detector is implemented. - Direct detection The existing failure detector can get gossip heartbeat updates indirectly. For example: Node A can talk to Node B Node B can talk to Node C Node A can not talk to Node C, due to network issues Node A will not mark Node B to be down because Node A can get heart beat of Node C from node B indirectly. This indirect detection is not very useful because when Node A decides if it should send requests to Node C, the requests from Node A to C will fail while Node A thinks it can communicate with Node C. This patch changes the failure detection to be direct. It uses the existing gossip echo message to detect directly. Gossip echo messages will be sent to peer nodes periodically. A peer node will be marked as down if a timeout threshold has been meet. Since the failure detection is peer to peer, it avoids the delayed message issue mentioned above. - Parallel detection The old failure detector uses shard zero only. This new failure detector utilizes all the shards to perform the failure detection, each shard handling a subset of live nodes. For example, if the cluster has 32 nodes and each node has 16 shards, each shard will handle only 2 nodes. With a 16 nodes cluster, each node has 16 shards, each shard will handle only one peer node. A gossip message will be sent to peer nodes every 2 seconds. The extra echo messages traffic produced compared to the old failure detector is negligible. - Deterministic detection Users can configure the failure_detector_timeout_in_ms to set the threshold to mark a node down. It is the maximum time between two successful echo message before gossip marks a node down. It is easier to understand than the old phi_convict_threshold. - Compatible This patch only uses the existing gossip echo message. Nodes with or without this patch can work together. Fixes #8488 Closes #8036
376 lines
16 KiB
C++
376 lines
16 KiB
C++
/*
|
|
* Copyright (C) 2015 ScyllaDB
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* This file is part of Scylla.
|
|
*
|
|
* Scylla is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Scylla is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <boost/program_options.hpp>
|
|
#include <unordered_map>
|
|
|
|
#include <seastar/core/sstring.hh>
|
|
#include <seastar/core/shared_ptr.hh>
|
|
#include <seastar/util/program-options.hh>
|
|
#include <seastar/util/log.hh>
|
|
|
|
#include "seastarx.hh"
|
|
#include "utils/config_file.hh"
|
|
#include "utils/enum_option.hh"
|
|
#include "db/hints/host_filter.hh"
|
|
|
|
namespace seastar { class file; struct logging_settings; }
|
|
|
|
namespace db {
|
|
|
|
namespace fs = std::filesystem;
|
|
|
|
class extensions;
|
|
|
|
/*
|
|
* This type is not use, and probably never will be.
|
|
* So it makes sense to jump through hoops just to ensure
|
|
* it is in fact handled properly...
|
|
*/
|
|
struct seed_provider_type {
|
|
seed_provider_type() = default;
|
|
seed_provider_type(sstring n,
|
|
std::initializer_list<program_options::string_map::value_type> opts =
|
|
{ })
|
|
: class_name(std::move(n)), parameters(std::move(opts)) {
|
|
}
|
|
sstring class_name;
|
|
std::unordered_map<sstring, sstring> parameters;
|
|
bool operator==(const seed_provider_type& other) const {
|
|
return class_name == other.class_name && parameters == other.parameters;
|
|
}
|
|
friend std::ostream& operator<<(std::ostream& os, const seed_provider_type&);
|
|
};
|
|
|
|
std::ostream& operator<<(std::ostream& os, const db::seed_provider_type& s);
|
|
|
|
}
|
|
|
|
|
|
namespace utils {
|
|
|
|
sstring config_value_as_json(const db::seed_provider_type& v);
|
|
|
|
sstring config_value_as_json(const log_level& v);
|
|
|
|
sstring config_value_as_json(const std::unordered_map<sstring, log_level>& v);
|
|
|
|
}
|
|
|
|
namespace db {
|
|
|
|
/// Enumeration of all valid values for the `experimental` config entry.
|
|
struct experimental_features_t {
|
|
enum feature { UNUSED, UDF, UNUSED_CDC, ALTERNATOR_STREAMS };
|
|
static std::unordered_map<sstring, feature> map(); // See enum_option.
|
|
static std::vector<enum_option<experimental_features_t>> all();
|
|
};
|
|
|
|
class config : public utils::config_file {
|
|
public:
|
|
config();
|
|
config(std::shared_ptr<db::extensions>);
|
|
~config();
|
|
|
|
// For testing only
|
|
void add_cdc_extension();
|
|
|
|
/// True iff the feature is enabled.
|
|
bool check_experimental(experimental_features_t::feature f) const;
|
|
|
|
void setup_directories();
|
|
|
|
/**
|
|
* Scans the environment variables for configuration files directory
|
|
* definition. It's either $SCYLLA_CONF, $SCYLLA_HOME/conf or "conf" if none
|
|
* of SCYLLA_CONF and SCYLLA_HOME is defined.
|
|
*
|
|
* @return path of the directory where configuration files are located
|
|
* according the environment variables definitions.
|
|
*/
|
|
static fs::path get_conf_dir();
|
|
static fs::path get_conf_sub(fs::path);
|
|
|
|
using string_map = std::unordered_map<sstring, sstring>;
|
|
//program_options::string_map;
|
|
using string_list = std::vector<sstring>;
|
|
using seed_provider_type = db::seed_provider_type;
|
|
using hinted_handoff_enabled_type = db::hints::host_filter;
|
|
|
|
/*
|
|
* All values and documentation taken from
|
|
* http://docs.datastax.com/en/cassandra/2.1/cassandra/configuration/configCassandra_yaml_r.html
|
|
*/
|
|
named_value<double> background_writer_scheduling_quota;
|
|
named_value<bool> auto_adjust_flush_quota;
|
|
named_value<float> memtable_flush_static_shares;
|
|
named_value<float> compaction_static_shares;
|
|
named_value<bool> compaction_enforce_min_threshold;
|
|
named_value<sstring> cluster_name;
|
|
named_value<sstring> listen_address;
|
|
named_value<sstring> listen_interface;
|
|
named_value<bool> listen_interface_prefer_ipv6;
|
|
named_value<sstring> work_directory;
|
|
named_value<sstring> commitlog_directory;
|
|
named_value<string_list> data_file_directories;
|
|
named_value<sstring> hints_directory;
|
|
named_value<sstring> view_hints_directory;
|
|
named_value<sstring> saved_caches_directory;
|
|
named_value<sstring> commit_failure_policy;
|
|
named_value<sstring> disk_failure_policy;
|
|
named_value<sstring> endpoint_snitch;
|
|
named_value<sstring> rpc_address;
|
|
named_value<sstring> rpc_interface;
|
|
named_value<bool> rpc_interface_prefer_ipv6;
|
|
named_value<seed_provider_type> seed_provider;
|
|
named_value<uint32_t> compaction_throughput_mb_per_sec;
|
|
named_value<uint32_t> compaction_large_partition_warning_threshold_mb;
|
|
named_value<uint32_t> compaction_large_row_warning_threshold_mb;
|
|
named_value<uint32_t> compaction_large_cell_warning_threshold_mb;
|
|
named_value<uint32_t> compaction_rows_count_warning_threshold;
|
|
named_value<uint32_t> memtable_total_space_in_mb;
|
|
named_value<uint32_t> concurrent_reads;
|
|
named_value<uint32_t> concurrent_writes;
|
|
named_value<uint32_t> concurrent_counter_writes;
|
|
named_value<bool> incremental_backups;
|
|
named_value<bool> snapshot_before_compaction;
|
|
named_value<uint32_t> phi_convict_threshold;
|
|
named_value<uint32_t> failure_detector_timeout_in_ms;
|
|
named_value<sstring> commitlog_sync;
|
|
named_value<uint32_t> commitlog_segment_size_in_mb;
|
|
named_value<uint32_t> commitlog_sync_period_in_ms;
|
|
named_value<uint32_t> commitlog_sync_batch_window_in_ms;
|
|
named_value<int64_t> commitlog_total_space_in_mb;
|
|
named_value<bool> commitlog_reuse_segments;
|
|
named_value<bool> commitlog_use_o_dsync;
|
|
named_value<bool> compaction_preheat_key_cache;
|
|
named_value<uint32_t> concurrent_compactors;
|
|
named_value<uint32_t> in_memory_compaction_limit_in_mb;
|
|
named_value<bool> preheat_kernel_page_cache;
|
|
named_value<uint32_t> sstable_preemptive_open_interval_in_mb;
|
|
named_value<bool> defragment_memory_on_idle;
|
|
named_value<sstring> memtable_allocation_type;
|
|
named_value<double> memtable_cleanup_threshold;
|
|
named_value<uint32_t> file_cache_size_in_mb;
|
|
named_value<uint32_t> memtable_flush_queue_size;
|
|
named_value<uint32_t> memtable_flush_writers;
|
|
named_value<uint32_t> memtable_heap_space_in_mb;
|
|
named_value<uint32_t> memtable_offheap_space_in_mb;
|
|
named_value<uint32_t> column_index_size_in_kb;
|
|
named_value<uint32_t> index_summary_capacity_in_mb;
|
|
named_value<uint32_t> index_summary_resize_interval_in_minutes;
|
|
named_value<double> reduce_cache_capacity_to;
|
|
named_value<double> reduce_cache_sizes_at;
|
|
named_value<uint32_t> stream_throughput_outbound_megabits_per_sec;
|
|
named_value<uint32_t> inter_dc_stream_throughput_outbound_megabits_per_sec;
|
|
named_value<bool> trickle_fsync;
|
|
named_value<uint32_t> trickle_fsync_interval_in_kb;
|
|
named_value<bool> auto_bootstrap;
|
|
named_value<uint32_t> batch_size_warn_threshold_in_kb;
|
|
named_value<uint32_t> batch_size_fail_threshold_in_kb;
|
|
named_value<sstring> broadcast_address;
|
|
named_value<bool> listen_on_broadcast_address;
|
|
named_value<sstring> initial_token;
|
|
named_value<uint32_t> num_tokens;
|
|
named_value<sstring> partitioner;
|
|
named_value<uint16_t> storage_port;
|
|
named_value<bool> auto_snapshot;
|
|
named_value<uint32_t> key_cache_keys_to_save;
|
|
named_value<uint32_t> key_cache_save_period;
|
|
named_value<uint32_t> key_cache_size_in_mb;
|
|
named_value<uint32_t> row_cache_keys_to_save;
|
|
named_value<uint32_t> row_cache_size_in_mb;
|
|
named_value<uint32_t> row_cache_save_period;
|
|
named_value<sstring> memory_allocator;
|
|
named_value<uint32_t> counter_cache_size_in_mb;
|
|
named_value<uint32_t> counter_cache_save_period;
|
|
named_value<uint32_t> counter_cache_keys_to_save;
|
|
named_value<uint32_t> tombstone_warn_threshold;
|
|
named_value<uint32_t> tombstone_failure_threshold;
|
|
named_value<uint32_t> range_request_timeout_in_ms;
|
|
named_value<uint32_t> read_request_timeout_in_ms;
|
|
named_value<uint32_t> counter_write_request_timeout_in_ms;
|
|
named_value<uint32_t> cas_contention_timeout_in_ms;
|
|
named_value<uint32_t> truncate_request_timeout_in_ms;
|
|
named_value<uint32_t> write_request_timeout_in_ms;
|
|
named_value<uint32_t> request_timeout_in_ms;
|
|
named_value<bool> cross_node_timeout;
|
|
named_value<uint32_t> internode_send_buff_size_in_bytes;
|
|
named_value<uint32_t> internode_recv_buff_size_in_bytes;
|
|
named_value<sstring> internode_compression;
|
|
named_value<bool> inter_dc_tcp_nodelay;
|
|
named_value<uint32_t> streaming_socket_timeout_in_ms;
|
|
named_value<bool> start_native_transport;
|
|
named_value<uint16_t> native_transport_port;
|
|
named_value<uint16_t> native_transport_port_ssl;
|
|
named_value<uint16_t> native_shard_aware_transport_port;
|
|
named_value<uint16_t> native_shard_aware_transport_port_ssl;
|
|
named_value<uint32_t> native_transport_max_threads;
|
|
named_value<uint32_t> native_transport_max_frame_size_in_mb;
|
|
named_value<sstring> broadcast_rpc_address;
|
|
named_value<uint16_t> rpc_port;
|
|
named_value<bool> start_rpc;
|
|
named_value<bool> rpc_keepalive;
|
|
named_value<uint32_t> rpc_max_threads;
|
|
named_value<uint32_t> rpc_min_threads;
|
|
named_value<uint32_t> rpc_recv_buff_size_in_bytes;
|
|
named_value<uint32_t> rpc_send_buff_size_in_bytes;
|
|
named_value<sstring> rpc_server_type;
|
|
named_value<bool> cache_hit_rate_read_balancing;
|
|
named_value<double> dynamic_snitch_badness_threshold;
|
|
named_value<uint32_t> dynamic_snitch_reset_interval_in_ms;
|
|
named_value<uint32_t> dynamic_snitch_update_interval_in_ms;
|
|
named_value<hinted_handoff_enabled_type> hinted_handoff_enabled;
|
|
named_value<uint32_t> hinted_handoff_throttle_in_kb;
|
|
named_value<uint32_t> max_hint_window_in_ms;
|
|
named_value<uint32_t> max_hints_delivery_threads;
|
|
named_value<uint32_t> batchlog_replay_throttle_in_kb;
|
|
named_value<sstring> request_scheduler;
|
|
named_value<sstring> request_scheduler_id;
|
|
named_value<string_map> request_scheduler_options;
|
|
named_value<uint32_t> thrift_framed_transport_size_in_mb;
|
|
named_value<uint32_t> thrift_max_message_length_in_mb;
|
|
named_value<sstring> authenticator;
|
|
named_value<sstring> internode_authenticator;
|
|
named_value<sstring> authorizer;
|
|
named_value<sstring> role_manager;
|
|
named_value<uint32_t> permissions_validity_in_ms;
|
|
named_value<uint32_t> permissions_update_interval_in_ms;
|
|
named_value<uint32_t> permissions_cache_max_entries;
|
|
named_value<string_map> server_encryption_options;
|
|
named_value<string_map> client_encryption_options;
|
|
named_value<string_map> alternator_encryption_options;
|
|
named_value<uint32_t> ssl_storage_port;
|
|
named_value<bool> enable_in_memory_data_store;
|
|
named_value<bool> enable_cache;
|
|
named_value<bool> enable_commitlog;
|
|
named_value<bool> volatile_system_keyspace_for_testing;
|
|
named_value<uint16_t> api_port;
|
|
named_value<sstring> api_address;
|
|
named_value<sstring> api_ui_dir;
|
|
named_value<sstring> api_doc_dir;
|
|
named_value<sstring> load_balance;
|
|
named_value<bool> consistent_rangemovement;
|
|
named_value<bool> join_ring;
|
|
named_value<bool> load_ring_state;
|
|
named_value<sstring> replace_node;
|
|
named_value<sstring> replace_token;
|
|
named_value<sstring> replace_address;
|
|
named_value<sstring> replace_address_first_boot;
|
|
named_value<bool> override_decommission;
|
|
named_value<bool> enable_repair_based_node_ops;
|
|
named_value<bool> wait_for_hint_replay_before_repair;
|
|
named_value<uint32_t> ring_delay_ms;
|
|
named_value<uint32_t> shadow_round_ms;
|
|
named_value<uint32_t> fd_max_interval_ms;
|
|
named_value<uint32_t> fd_initial_value_ms;
|
|
named_value<uint32_t> shutdown_announce_in_ms;
|
|
named_value<bool> developer_mode;
|
|
named_value<int32_t> skip_wait_for_gossip_to_settle;
|
|
named_value<int32_t> force_gossip_generation;
|
|
named_value<bool> experimental;
|
|
named_value<std::vector<enum_option<experimental_features_t>>> experimental_features;
|
|
named_value<size_t> lsa_reclamation_step;
|
|
named_value<uint16_t> prometheus_port;
|
|
named_value<sstring> prometheus_address;
|
|
named_value<sstring> prometheus_prefix;
|
|
named_value<bool> abort_on_lsa_bad_alloc;
|
|
named_value<unsigned> murmur3_partitioner_ignore_msb_bits;
|
|
named_value<double> virtual_dirty_soft_limit;
|
|
named_value<double> sstable_summary_ratio;
|
|
named_value<size_t> large_memory_allocation_warning_threshold;
|
|
named_value<bool> enable_deprecated_partitioners;
|
|
named_value<bool> enable_keyspace_column_family_metrics;
|
|
named_value<bool> enable_sstable_data_integrity_check;
|
|
named_value<bool> enable_sstable_key_validation;
|
|
named_value<bool> cpu_scheduler;
|
|
named_value<bool> view_building;
|
|
named_value<bool> enable_sstables_mc_format;
|
|
named_value<bool> enable_sstables_md_format;
|
|
named_value<bool> enable_dangerous_direct_import_of_cassandra_counters;
|
|
named_value<bool> enable_shard_aware_drivers;
|
|
named_value<bool> enable_ipv6_dns_lookup;
|
|
named_value<bool> abort_on_internal_error;
|
|
named_value<uint32_t> max_partition_key_restrictions_per_query;
|
|
named_value<uint32_t> max_clustering_key_restrictions_per_query;
|
|
named_value<uint64_t> max_memory_for_unlimited_query_soft_limit;
|
|
named_value<uint64_t> max_memory_for_unlimited_query_hard_limit;
|
|
named_value<unsigned> initial_sstable_loading_concurrency;
|
|
named_value<bool> enable_3_1_0_compatibility_mode;
|
|
named_value<bool> enable_user_defined_functions;
|
|
named_value<unsigned> user_defined_function_time_limit_ms;
|
|
named_value<unsigned> user_defined_function_allocation_limit_bytes;
|
|
named_value<unsigned> user_defined_function_contiguous_allocation_limit_bytes;
|
|
named_value<uint32_t> schema_registry_grace_period;
|
|
named_value<uint32_t> max_concurrent_requests_per_shard;
|
|
named_value<bool> cdc_dont_rewrite_streams;
|
|
|
|
named_value<uint16_t> alternator_port;
|
|
named_value<uint16_t> alternator_https_port;
|
|
named_value<sstring> alternator_address;
|
|
named_value<bool> alternator_enforce_authorization;
|
|
named_value<sstring> alternator_write_isolation;
|
|
named_value<uint32_t> alternator_streams_time_window_s;
|
|
named_value<uint32_t> alternator_timeout_in_ms;
|
|
|
|
named_value<bool> abort_on_ebadf;
|
|
|
|
named_value<uint16_t> redis_port;
|
|
named_value<uint16_t> redis_ssl_port;
|
|
named_value<sstring> redis_read_consistency_level;
|
|
named_value<sstring> redis_write_consistency_level;
|
|
named_value<uint16_t> redis_database_count;
|
|
named_value<string_map> redis_keyspace_replication_strategy_options;
|
|
|
|
seastar::logging_settings logging_settings(const boost::program_options::variables_map&) const;
|
|
|
|
const db::extensions& extensions() const;
|
|
|
|
static const sstring default_tls_priority;
|
|
private:
|
|
template<typename T>
|
|
struct log_legacy_value : public named_value<T> {
|
|
using MyBase = named_value<T>;
|
|
|
|
using MyBase::MyBase;
|
|
|
|
T value_or(T&& t) const {
|
|
return this->is_set() ? (*this)() : t;
|
|
}
|
|
// do not add to boost::options. We only care about yaml config
|
|
void add_command_line_option(boost::program_options::options_description_easy_init&) override {}
|
|
};
|
|
|
|
log_legacy_value<seastar::log_level> default_log_level;
|
|
log_legacy_value<std::unordered_map<sstring, seastar::log_level>> logger_log_level;
|
|
log_legacy_value<bool> log_to_stdout, log_to_syslog;
|
|
|
|
void maybe_in_workdir(named_value<sstring>&, const char*);
|
|
void maybe_in_workdir(named_value<string_list>&, const char*);
|
|
|
|
std::shared_ptr<db::extensions> _extensions;
|
|
};
|
|
|
|
}
|