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quorum calculation getLatestFileInfo should be itself (#13717)

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FileInfo quorum shouldn't be passed down, instead
inferred after obtaining a maximally occurring FileInfo.

This PR also changes other functions that rely on
wrong quorum calculation.

Update tests as well to handle the proper requirement. All
these changes are needed when migrating from older deployments
where we used to set N/2 quorum for reads to EC:4 parity in
newer releases.
This commit is contained in:
Harshavardhana
2021-11-22 09:36:29 -08:00
committed by GitHub
parent c791de0e1e
commit 28f95f1fbe
6 changed files with 90 additions and 72 deletions
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6
cmd/erasure-metadata.go
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@@ -390,15 +390,11 @@ func writeUniqueFileInfo(ctx context.Context, disks []StorageAPI, bucket, prefix
// writeQuorum is the min required disks to write data.
func objectQuorumFromMeta(ctx context.Context, partsMetaData []FileInfo, errs []error, defaultParityCount int) (objectReadQuorum, objectWriteQuorum int, err error) {
// get the latest updated Metadata and a count of all the latest updated FileInfo(s)
latestFileInfo, err := getLatestFileInfo(ctx, partsMetaData, errs, defaultParityCount)
latestFileInfo, err := getLatestFileInfo(ctx, partsMetaData, errs)
if err != nil {
return 0, 0, err
}
if !latestFileInfo.IsValid() {
return 0, 0, errErasureReadQuorum
}
parityBlocks := globalStorageClass.GetParityForSC(latestFileInfo.Metadata[xhttp.AmzStorageClass])
if parityBlocks <= 0 {
parityBlocks = defaultParityCount