forked from TrueCloudLab/frostfs-node
Evgenii Stratonikov
57efa0bc8e
Consider `REP 1 REP 1` placement (selects/filters are omitted). The placement is `[1, 2], [1, 0]`. We are the 0-th node. Node 1 is under maintenance, so we do not replicate object on the node 2. In the second replication group node 1 is under maintenance, but current caching logic considers it as "replica holder" and removes local copy. Voilà, we have DL if the object is missing from the node 1. Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
41 lines
1 KiB
Go
41 lines
1 KiB
Go
package policer
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import "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
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type nodeProcessStatus int8
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const (
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nodeNotProcessed nodeProcessStatus = iota
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nodeDoesNotHoldObject
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nodeHoldsObject
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nodeStatusUnknown
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nodeIsUnderMaintenance
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)
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func (st nodeProcessStatus) Processed() bool {
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return st != nodeNotProcessed
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}
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// nodeCache tracks Policer's check progress.
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type nodeCache map[uint64]nodeProcessStatus
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func newNodeCache() nodeCache {
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return make(map[uint64]nodeProcessStatus)
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}
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func (n nodeCache) set(node netmap.NodeInfo, val nodeProcessStatus) {
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n[node.Hash()] = val
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}
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// processStatus returns current processing status of the storage node.
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func (n nodeCache) processStatus(node netmap.NodeInfo) nodeProcessStatus {
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return n[node.Hash()]
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}
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// SubmitSuccessfulReplication marks given storage node as a current object
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// replica holder.
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//
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// SubmitSuccessfulReplication implements replicator.TaskResult.
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func (n nodeCache) SubmitSuccessfulReplication(node netmap.NodeInfo) {
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n.set(node, nodeHoldsObject)
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}
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