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XL/GetObject: pick the xl.json with highest version for metadata information. (#1914)

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fixes #1913
This commit is contained in:
Krishna Srinivas 2016-06-17 10:56:18 +05:30 committed by Harshavardhana
parent 365f80efa3
commit d31b38aac8
1 changed files with 9 additions and 11 deletions
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20
xl-v1-object.go
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@ -54,25 +54,23 @@ func (xl xlObjects) GetObject(bucket, object string, startOffset int64, length i
defer nsMutex.RUnlock(bucket, object)
// Read metadata associated with the object from all disks.
partsMetadata, errs := xl.readAllXLMetadata(bucket, object)
metaArr, errs := xl.readAllXLMetadata(bucket, object)
if err := reduceError(errs, xl.readQuorum); err != nil {
return toObjectErr(err, bucket, object)
}
// List all online disks.
onlineDisks, _, err := xl.listOnlineDisks(partsMetadata, errs)
onlineDisks, highestVersion, err := xl.listOnlineDisks(metaArr, errs)
if err != nil {
return toObjectErr(err, bucket, object)
}
// Pick one from the first valid metadata.
xlMeta := partsMetadata[0]
if !xlMeta.IsValid() {
for _, partMetadata := range partsMetadata {
if partMetadata.IsValid() {
xlMeta = partMetadata
break
}
// Pick latest valid metadata.
var xlMeta xlMetaV1
for _, meta := range metaArr {
if meta.IsValid() && meta.Stat.Version == highestVersion {
xlMeta = meta
break
}
}
@ -85,7 +83,7 @@ func (xl xlObjects) GetObject(bucket, object string, startOffset int64, length i
// Collect all the previous erasure infos across the disk.
var eInfos []erasureInfo
for index := range onlineDisks {
eInfos = append(eInfos, partsMetadata[index].Erasure)
eInfos = append(eInfos, metaArr[index].Erasure)
}
// Read from all parts.