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nexedi
neoppod
Commits
bff54f83
Commit
bff54f83
authored
May 21, 2017
by
Kirill Smelkov
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go/neo/master.go
go/neo/master.go
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go/neo/master.go
View file @
bff54f83
...
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@@ -102,25 +102,48 @@ func (m *Master) ServeLink(ctx context.Context, link *NodeLink) {
// client: notify + serve requests
// storage: notify + ?
// storage:
//
// RECOVERY (master.recovery.RecoveryManager + master.handlers.identification.py)
// --------
// """
// Recover the status about the cluster. Obtain the last OID, the last
// TID, and the last Partition Table ID from storage nodes, then get
// back the latest partition table or make a new table from scratch,
// if this is the first time.
// A new primary master may also arise during this phase.
// """
//
// m.clusterState = Recovering
// m.partTab.clear()
//
// - wait for S nodes to connect and process recovery phases on them
// - if pt.filled() - we are starting an existing cluster
// - else if autostart and N(S, connected) >= min_autosart -> starting new cluster
// - (handle truncation if .trancate_tid is set)
//
// >Recovery
// <AnswerRecovery
// <AnswerRecovery
(ptid, backup_tid, truncate_tid)
//
// >PartitionTable
// <AnswerPartitionTable
// <AnswerPartitionTable (ptid, []{pid, []cell}
//
// NOTE ^^^ need to collect PT from all storages and choose one with highest ptid
// NOTE same for backup_tid & truncate_tid
//
//
// # neoctl start
// # (via changing nodeTab and relying on broadcast distribution ?)
// >NotifyNodeInformation (S1.state=RUNNING)
// # S: "I was told I'm RUNNING"
// # S: "I was told I'm RUNNING"
XXX ^^^ -> StartOperation
//
// # (via changing m.clusterState and relying on broadcast ?)
// >NotifyClusterInformation (cluster_state=VERIFYING)
//
// # (via changing partTab and relying on broadcast ?)
// >NotifyPartitionTable (ptid=1, `node 0: S1, R`)
// # S saves PT info locally
// # S saves PT info locally
XXX -> after StartOperation ?
//
// # M asks about unfinished transactions
// >AskLockedTransactions
...
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@@ -130,7 +153,7 @@ func (m *Master) ServeLink(ctx context.Context, link *NodeLink) {
// <AnswerLastIDs (last_oid, last_tid)
//
// # (via changing m.clusterState and relying on broadcast ?)
// >NotifyClusterInformation (cluster_state=RUNNING)
// >NotifyClusterInformation (cluster_state=RUNNING)
XXX -> StartOperation
//
// >StartOperation
// <NotifyReady
...
...
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