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ListObjects Metadata Caching (#10648)

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Design: https://gist.github.com/klauspost/025c09b48ed4a1293c917cecfabdf21c

Gist of improvements:

* Cross-server caching and listing will use the same data across servers and requests.
* Lists can be arbitrarily resumed at a constant speed.
* Metadata for all files scanned is stored for streaming retrieval.
* The existing bloom filters controlled by the crawler is used for validating caches.
* Concurrent requests for the same data (or parts of it) will not spawn additional walkers.
* Listing a subdirectory of an existing recursive cache will use the cache.
* All listing operations are fully streamable so the number of objects in a bucket no 
  longer dictates the amount of memory.
* Listings can be handled by any server within the cluster.
* Caches are cleaned up when out of date or superseded by a more recent one.
This commit is contained in:
Klaus Post
2020-10-28 09:18:35 -07:00
committed by GitHub
parent 51222cc664
commit a982baff27
65 changed files with 6328 additions and 742 deletions
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3
cmd/storage-rest-client.go
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@@ -555,10 +555,11 @@ func (client *storageRESTClient) ListDir(ctx context.Context, volume, dirPath st
}
// DeleteFile - deletes a file.
func (client *storageRESTClient) DeleteFile(ctx context.Context, volume string, path string) error {
func (client *storageRESTClient) Delete(ctx context.Context, volume string, path string, recursive bool) error {
values := make(url.Values)
values.Set(storageRESTVolume, volume)
values.Set(storageRESTFilePath, path)
values.Set(storageRESTRecursive, strconv.FormatBool(recursive))
respBody, err := client.call(ctx, storageRESTMethodDeleteFile, values, nil, -1)
defer http.DrainBody(respBody)
return err