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fb96779a8a
This PR implements an object layer which combines input erasure sets of XL layers into a unified namespace. This object layer extends the existing erasure coded implementation, it is assumed in this design that providing > 16 disks is a static configuration as well i.e if you started the setup with 32 disks with 4 sets 8 disks per pack then you would need to provide 4 sets always. Some design details and restrictions: - Objects are distributed using consistent ordering to a unique erasure coded layer. - Each pack has its own dsync so locks are synchronized properly at pack (erasure layer). - Each pack still has a maximum of 16 disks requirement, you can start with multiple such sets statically. - Static sets set of disks and cannot be changed, there is no elastic expansion allowed. - Static sets set of disks and cannot be changed, there is no elastic removal allowed. - ListObjects() across sets can be noticeably slower since List happens on all servers, and is merged at this sets layer. Fixes #5465 Fixes #5464 Fixes #5461 Fixes #5460 Fixes #5459 Fixes #5458 Fixes #5460 Fixes #5488 Fixes #5489 Fixes #5497 Fixes #5496
53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
/*
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* Minio Cloud Storage, (C) 2017 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package errgroup
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import (
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"fmt"
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"reflect"
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"testing"
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)
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func TestGroupWithNErrs(t *testing.T) {
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err1 := fmt.Errorf("errgroup_test: 1")
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err2 := fmt.Errorf("errgroup_test: 2")
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cases := []struct {
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errs []error
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}{
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{errs: []error{nil}},
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{errs: []error{err1}},
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{errs: []error{err1, nil}},
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{errs: []error{err1, nil, err2}},
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}
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for j, tc := range cases {
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t.Run(fmt.Sprintf("Test%d", j+1), func(t *testing.T) {
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g := WithNErrs(len(tc.errs))
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for i, err := range tc.errs {
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err := err
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g.Go(func() error { return err }, i)
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}
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gotErrs := g.Wait()
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if !reflect.DeepEqual(gotErrs, tc.errs) {
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t.Errorf("Expected %#v, got %#v", tc.errs, gotErrs)
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}
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})
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}
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}
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