...
| Code Block |
|---|
// root_coord.proto
service RootCoord {
// NEW
// CreateAlias creates 1 to 1 mapping between `alias` and `collection_name`
// 1. If there no `alias` in the metaTable:
// 1.1 new `alias` will be added to the metaTable
// 1.2 `alias` will be persisted in the `etcd`
// 1.3 `dd_op` will sent to log broker.
// 2. If there is `alias/collection` in the metaTable:
// 2.1 An `alias/collection already exists` error will be returned.
rpc CreateAlias(milvus.CreateAliasRequest) returns (common.Status) {}
// NEW
// 1. DropAlias
// 1.1 Removes existing mapping from the metaTable
// 1.2 Removes existing mapping from the `etcd`
// 1.3 `dd_op` will be sent to the log broker.
// 1.4 Invalidates proxy caches
rpc DropAlias(milvus.DropAliasRequest) returns (common.Status) {}
// NEW
// 1. AlterAlias
// 1.1 Existing mapping will be updated in metaTable.
// 1.2 Existing mapping will be updated in `etcd`
// 1.3 `dd_op` will be sent to log broker.
// 1.4 Invalidates proxy caches.
rpc AlterAlias(milvus.AlterAliasRequest) returns (common.Status) {}
// UPDATED REQUIRED
// Collection can't be dropped it is referenced by an `alias`.
rpc DropCollection(DropCollectionRequest) returns (common.Status) {}
// UPDATED REQUIRED
// DescribeCollection now returns `aliases`
rpc DescribeCollection(DescribeCollectionRequest) returns (DescribeCollectionResponse) {}
}
|
Recovery
The recovery process will handle CreateAliasDDType , DropAliasDDType, AlterAliasDDType types.
| Code Block |
|---|
func (c *Core) reSendDdMsg(ctx context.Context) error {
flag, err := c.MetaTable.client.Load(DDMsgSendPrefix, 0)
if err != nil || flag == "true" {
log.Debug("No un-successful DdMsg")
return nil
}
ddOpStr, err := c.MetaTable.client.Load(DDOperationPrefix, 0)
if err != nil {
log.Debug("DdOperation key does not exist")
return nil
}
var ddOp DdOperation
if err = json.Unmarshal([]byte(ddOpStr), &ddOp); err != nil {
return err
}
switch ddOp.Type {
case CreateCollectionDDType:
var ddReq = internalpb.CreateCollectionRequest{}
if err = proto.UnmarshalText(ddOp.Body, &ddReq); err != nil {
return err
}
collInfo, err := c.MetaTable.GetCollectionByName(ddReq.CollectionName, 0)
if err != nil {
return err
}
if err = c.SendDdCreateCollectionReq(ctx, &ddReq, collInfo.PhysicalChannelNames); err != nil {
return err
}
// NEW
case CreateAliasDDType:
...
case DropAliasDDType:
...
case AlterAliasDDType:
...
...
} |
Compatibility, Deprecation, and Migration Plan
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