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feat: implement prefix-level versioning exclusion (#14828)

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Spark/Hadoop workloads which use Hadoop MR 
Committer v1/v2 algorithm upload objects to a 
temporary prefix in a bucket. These objects are 
'renamed' to a different prefix on Job commit. 
Object storage admins are forced to configure 
separate ILM policies to expire these objects 
and their versions to reclaim space.

Our solution:

This can be avoided by simply marking objects 
under these prefixes to be excluded from versioning, 
as shown below. Consequently, these objects are 
excluded from replication, and don't require ILM 
policies to prune unnecessary versions.

-  MinIO Extension to Bucket Version Configuration
```xml
<VersioningConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/"> 
        <Status>Enabled</Status>
        <ExcludeFolders>true</ExcludeFolders>
        <ExcludedPrefixes>
          <Prefix>app1-jobs/*/_temporary/</Prefix>
        </ExcludedPrefixes>
        <ExcludedPrefixes>
          <Prefix>app2-jobs/*/__magic/</Prefix>
        </ExcludedPrefixes>

        <!-- .. up to 10 prefixes in all -->     
</VersioningConfiguration>
```
Note: `ExcludeFolders` excludes all folders in a bucket 
from versioning. This is required to prevent the parent 
folders from accumulating delete markers, especially
those which are shared across spark workloads 
spanning projects/teams.

- To enable version exclusion on a list of prefixes

```
mc version enable --excluded-prefixes "app1-jobs/*/_temporary/,app2-jobs/*/_magic," --exclude-prefix-marker myminio/test
```
This commit is contained in:
Krishnan Parthasarathi
2022-05-06 19:05:28 -07:00
committed by GitHub
parent 3ec1844e4a
commit ad8e611098
20 changed files with 478 additions and 59 deletions
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3
cmd/object-api-interface.go
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@@ -76,6 +76,9 @@ type ObjectOptions struct {
// Mutate set to 'true' if the call is namespace mutation call
Mutate bool
WalkAscending bool // return Walk results in ascending order of versions
PrefixEnabledFn func(prefix string) bool // function which returns true if versioning is enabled on prefix
PrefixSuspendedFn func(prefix string) bool // function which returns true if versioning is suspended on prefix
}
// ExpirationOptions represents object options for object expiration at objectLayer.