VTOrc: Rework recovery registration

changelog/20.0/20.0.0/summary.md

@@ -6,6 +6,7 @@
   - **[Breaking changes](#breaking-changes)**
     - [`shutdown_grace_period` Default Change](#shutdown-grace-period-default)
     - [New `unmanaged` Flag and `disable_active_reparents` deprecation](#unmanaged-flag)
+    - [`recovery-period-block-duration` Flag deprecation](#recovery-block-deprecation)
     - [`mysqlctld` `onterm-timeout` Default Change](#mysqlctld-onterm-timeout)
     - [`Durabler` interface method renaming](#durabler-interface-method-renaming)
   - **[Query Compatibility](#query-compatibility)**
@@ -40,6 +41,13 @@ New flag `--unmanaged` has been introduced in this release to make it easier to
 
 Starting this release, all unmanaged tablets should specify this flag.
 
+
+#### <a id="recovery-block-deprecation"/> `recovery-period-block-duration` Flag deprecation
+
+The flag `--recovery-period-block-duration` has been deprecated in VTOrc from this release. Its value is ignored and will be removed in later releases.
+VTOrc no longer blocks recoveries for a certain duration after a previous recovery has completed. Since VTOrc refreshes the required information after
+acquiring a shard lock, blocking of recoveries is not required.
+
 #### <a id="mysqlctld-onterm-timeout"/>`mysqlctld` `onterm_timeout` Default Change
 
 The `--onterm_timeout` flag default value has changed for `mysqlctld`. It now is by default long enough to be able to wait for the default `--shutdown-wait-time` when shutting down on a `TERM` signal. 

go/cmd/vtorc/cli/cli.go

@@ -39,7 +39,6 @@ var (
 	--topo_global_root /vitess/global \
 	--log_dir $VTDATAROOT/tmp \
 	--port 15000 \
-	--recovery-period-block-duration "10m" \
 	--instance-poll-time "1s" \
 	--topo-information-refresh-duration "30s" \
 	--alsologtostderr`,
@@ -85,7 +84,7 @@ func run(cmd *cobra.Command, args []string) {
 // addStatusParts adds UI parts to the /debug/status page of VTOrc
 func addStatusParts() {
 	servenv.AddStatusPart("Recent Recoveries", logic.TopologyRecoveriesTemplate, func() any {
-		recoveries, _ := logic.ReadRecentRecoveries(false, 0)
+		recoveries, _ := logic.ReadRecentRecoveries(0)
 		return recoveries
 	})
 }

go/flags/endtoend/vtorc.txt

@@ -10,7 +10,6 @@ vtorc \
 	--topo_global_root /vitess/global \
 	--log_dir $VTDATAROOT/tmp \
 	--port 15000 \
-	--recovery-period-block-duration "10m" \
 	--instance-poll-time "1s" \
 	--topo-information-refresh-duration "30s" \
 	--alsologtostderr
@@ -65,7 +64,6 @@ Flags:
       --prevent-cross-cell-failover                                 Prevent VTOrc from promoting a primary in a different cell than the current primary in case of a failover
       --purge_logs_interval duration                                how often try to remove old logs (default 1h0m0s)
       --reasonable-replication-lag duration                         Maximum replication lag on replicas which is deemed to be acceptable (default 10s)
-      --recovery-period-block-duration duration                     Duration for which a new recovery is blocked on an instance after running a recovery (default 30s)
       --recovery-poll-duration duration                             Timer duration on which VTOrc polls its database to run a recovery (default 1s)
       --remote_operation_timeout duration                           time to wait for a remote operation (default 15s)
       --security_policy string                                      the name of a registered security policy to use for controlling access to URLs - empty means allow all for anyone (built-in policies: deny-all, read-only)

go/vt/vtorc/config/config.go

@@ -44,7 +44,6 @@ const (
 	DiscoveryQueueMaxStatisticsSize       = 120
 	DiscoveryCollectionRetentionSeconds   = 120
 	UnseenInstanceForgetHours             = 240 // Number of hours after which an unseen instance is forgotten
-	FailureDetectionPeriodBlockMinutes    = 60  // The time for which an instance's failure discovery is kept "active", so as to avoid concurrent "discoveries" of the instance's failure; this precedes any recovery process, if any.
 )
 
 var (
@@ -77,6 +76,7 @@ func RegisterFlags(fs *pflag.FlagSet) {
 	fs.BoolVar(&auditToSyslog, "audit-to-syslog", auditToSyslog, "Whether to store the audit log in the syslog")
 	fs.DurationVar(&auditPurgeDuration, "audit-purge-duration", auditPurgeDuration, "Duration for which audit logs are held before being purged. Should be in multiples of days")
 	fs.DurationVar(&recoveryPeriodBlockDuration, "recovery-period-block-duration", recoveryPeriodBlockDuration, "Duration for which a new recovery is blocked on an instance after running a recovery")
+	fs.MarkDeprecated("recovery-period-block-duration", "As of v20 this is ignored and will be removed in a future release.")
 	fs.BoolVar(&preventCrossCellFailover, "prevent-cross-cell-failover", preventCrossCellFailover, "Prevent VTOrc from promoting a primary in a different cell than the current primary in case of a failover")
 	fs.DurationVar(&waitReplicasTimeout, "wait-replicas-timeout", waitReplicasTimeout, "Duration for which to wait for replica's to respond when issuing RPCs")
 	fs.DurationVar(&tolerableReplicationLag, "tolerable-replication-lag", tolerableReplicationLag, "Amount of replication lag that is considered acceptable for a tablet to be eligible for promotion when Vitess makes the choice of a new primary in PRS")

go/vt/vtorc/db/generate_base.go

@@ -24,8 +24,7 @@ var TableNames = []string{
 	"topology_recovery",
 	"database_instance_topology_history",
 	"candidate_database_instance",
-	"topology_failure_detection",
-	"blocked_topology_recovery",
+	"recovery_detection",
 	"database_instance_last_analysis",
 	"database_instance_analysis_changelog",
 	"node_health_history",
@@ -172,35 +171,19 @@ DROP TABLE IF EXISTS topology_recovery
 CREATE TABLE topology_recovery (
 	recovery_id integer,
 	alias varchar(256) NOT NULL,
-	in_active_period tinyint NOT NULL DEFAULT 0,
-	start_active_period timestamp not null default (''),
-	end_active_period_unixtime int,
+	start_recovery timestamp NOT NULL DEFAULT (''),
 	end_recovery timestamp NULL DEFAULT NULL,
-	processing_node_hostname varchar(128) NOT NULL,
-	processcing_node_token varchar(128) NOT NULL,
 	successor_alias varchar(256) DEFAULT NULL,
 	analysis varchar(128) not null default '',
 	keyspace varchar(128) NOT NULL,
 	shard varchar(128) NOT NULL,
-	count_affected_replicas int not null default 0,
 	is_successful TINYint NOT NULL DEFAULT 0,
-	acknowledged TINYint NOT NULL DEFAULT 0,
-	acknowledged_by varchar(128) not null default '',
-	acknowledge_comment text not null default '',
 	all_errors text not null default '',
-	acknowledged_at TIMESTAMP NULL,
-	last_detection_id bigint not null default 0,
-	uid varchar(128) not null default '',
+	detection_id bigint not null default 0,
 	PRIMARY KEY (recovery_id)
 )`,
 	`
-CREATE INDEX in_active_start_period_idx_topology_recovery ON topology_recovery (in_active_period, start_active_period)
-	`,
-	`
-CREATE INDEX start_active_period_idx_topology_recovery ON topology_recovery (start_active_period)
-	`,
-	`
-CREATE UNIQUE INDEX alias_active_period_uidx_topology_recovery ON topology_recovery (alias, in_active_period, end_active_period_unixtime)
+CREATE INDEX start_recovery_idx_topology_recovery ON topology_recovery (start_recovery)
 	`,
 	`
 DROP TABLE IF EXISTS database_instance_topology_history
@@ -236,44 +219,19 @@ CREATE TABLE candidate_database_instance (
 CREATE INDEX last_suggested_idx_candidate_database_instance ON candidate_database_instance (last_suggested)
 	`,
 	`
-DROP TABLE IF EXISTS topology_failure_detection
+DROP TABLE IF EXISTS recovery_detection
 `,
 	`
-CREATE TABLE topology_failure_detection (
+CREATE TABLE recovery_detection (
 	detection_id integer,
 	alias varchar(256) NOT NULL,
-	in_active_period tinyint NOT NULL DEFAULT '0',
-	start_active_period timestamp not null default (''),
-	end_active_period_unixtime int NOT NULL,
-	processing_node_hostname varchar(128) NOT NULL,
-	processcing_node_token varchar(128) NOT NULL,
 	analysis varchar(128) NOT NULL,
 	keyspace varchar(128) NOT NULL,
 	shard varchar(128) NOT NULL,
-	count_affected_replicas int NOT NULL,
-	is_actionable tinyint not null default 0,
+	detection_timestamp timestamp NOT NULL default (''),
 	PRIMARY KEY (detection_id)
 )`,
 	`
-CREATE INDEX in_active_start_period_idx_topology_failure_detection ON topology_failure_detection (in_active_period, start_active_period)
-	`,
-	`
-DROP TABLE IF EXISTS blocked_topology_recovery
-`,
-	`
-CREATE TABLE blocked_topology_recovery (
-	alias varchar(256) NOT NULL,
-	keyspace varchar(128) NOT NULL,
-	shard varchar(128) NOT NULL,
-	analysis varchar(128) NOT NULL,
-	last_blocked_timestamp timestamp not null default (''),
-	blocking_recovery_id bigint,
-	PRIMARY KEY (alias)
-)`,
-	`
-CREATE INDEX keyspace_shard_blocked_idx_blocked_topology_recovery ON blocked_topology_recovery (keyspace, shard, last_blocked_timestamp)
-	`,
-	`
 DROP TABLE IF EXISTS database_instance_last_analysis
 `,
 	`
@@ -343,7 +301,7 @@ DROP TABLE IF EXISTS topology_recovery_steps
 	`
 CREATE TABLE topology_recovery_steps (
 	recovery_step_id integer,
-	recovery_uid varchar(128) NOT NULL,
+	recovery_id integer NOT NULL,
 	audit_at timestamp not null default (''),
 	message text NOT NULL,
 	PRIMARY KEY (recovery_step_id)
@@ -409,33 +367,21 @@ CREATE TABLE vitess_shard (
 CREATE INDEX source_host_port_idx_database_instance_database_instance on database_instance (source_host, source_port)
 	`,
 	`
-CREATE INDEX keyspace_shard_in_active_idx_topology_recovery on topology_recovery (keyspace, shard, in_active_period)
+CREATE INDEX keyspace_shard_idx_topology_recovery on topology_recovery (keyspace, shard)
 	`,
 	`
 CREATE INDEX end_recovery_idx_topology_recovery on topology_recovery (end_recovery)
 	`,
 	`
-CREATE INDEX acknowledged_idx_topology_recovery on topology_recovery (acknowledged, acknowledged_at)
-	`,
-	`
-CREATE INDEX last_blocked_idx_blocked_topology_recovery on blocked_topology_recovery (last_blocked_timestamp)
-	`,
-	`
 CREATE INDEX instance_timestamp_idx_database_instance_analysis_changelog on database_instance_analysis_changelog (alias, analysis_timestamp)
 	`,
 	`
-CREATE INDEX last_detection_idx_topology_recovery on topology_recovery (last_detection_id)
+CREATE INDEX detection_idx_topology_recovery on topology_recovery (detection_id)
 	`,
 	`
 CREATE INDEX last_seen_active_idx_node_health on node_health (last_seen_active)
 	`,
 	`
-CREATE INDEX uid_idx_topology_recovery ON topology_recovery(uid)
-	`,
-	`
-CREATE INDEX recovery_uid_idx_topology_recovery_steps ON topology_recovery_steps(recovery_uid)
-	`,
-	`
-CREATE UNIQUE INDEX alias_active_recoverable_uidx_topology_failure_detection ON topology_failure_detection (alias, in_active_period, end_active_period_unixtime, is_actionable)
+CREATE INDEX recovery_id_idx_topology_recovery_steps ON topology_recovery_steps(recovery_id)
 	`,
 }

go/vt/vtorc/inst/analysis.go

@@ -142,9 +142,7 @@ type ReplicationAnalysis struct {
 	CountDelayedReplicas                      uint
 	CountLaggingReplicas                      uint
 	IsActionableRecovery                      bool
-	ProcessingNodeHostname                    string
-	ProcessingNodeToken                       string
-	StartActivePeriod                         string
+	RecoveryId                                int64
 	GTIDMode                                  string
 	MinReplicaGTIDMode                        string
 	MaxReplicaGTIDMode                        string

go/vt/vtorc/inst/analysis_dao.go

@@ -31,7 +31,6 @@ import (
 	"vitess.io/vitess/go/vt/vtctl/reparentutil"
 	"vitess.io/vitess/go/vt/vtorc/config"
 	"vitess.io/vitess/go/vt/vtorc/db"
-	"vitess.io/vitess/go/vt/vtorc/process"
 	"vitess.io/vitess/go/vt/vtorc/util"
 
 	"github.com/patrickmn/go-cache"
@@ -302,9 +301,7 @@ func GetReplicationAnalysis(keyspace string, shard string, hints *ReplicationAna
 	clusters := make(map[string]*clusterAnalysis)
 	err := db.Db.QueryVTOrc(query, args, func(m sqlutils.RowMap) error {
 		a := &ReplicationAnalysis{
-			Analysis:               NoProblem,
-			ProcessingNodeHostname: process.ThisHostname,
-			ProcessingNodeToken:    util.ProcessToken.Hash,
+			Analysis: NoProblem,
 		}
 
 		tablet := &topodatapb.Tablet{}

go/vt/vtorc/inst/instance_dao.go

@@ -119,9 +119,11 @@ func ExecDBWriteFunc(f func() error) error {
 }
 
 func ExpireTableData(tableName string, timestampColumn string) error {
-	query := fmt.Sprintf("delete from %s where %s < NOW() - INTERVAL ? DAY", tableName, timestampColumn)
 	writeFunc := func() error {
-		_, err := db.ExecVTOrc(query, config.Config.AuditPurgeDays)
+		_, err := db.ExecVTOrc(
+			fmt.Sprintf("delete from %s where %s < NOW() - INTERVAL ? DAY", tableName, timestampColumn),
+			config.Config.AuditPurgeDays,
+		)
 		return err
 	}
 	return ExecDBWriteFunc(writeFunc)