ListObjects Metadata Caching (#10648)

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* Caches are cleaned up when out of date or superseded by a more recent one.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

View File

@@ -89,7 +89,7 @@ func cleanupDir(ctx context.Context, storage StorageAPI, volume, dirPath string)
delFunc = func(entryPath string) error {
if !HasSuffix(entryPath, SlashSeparator) {
// Delete the file entry.
err := storage.DeleteFile(ctx, volume, entryPath)
err := storage.Delete(ctx, volume, entryPath, false)
if !IsErrIgnored(err, []error{
errDiskNotFound,
errUnformattedDisk,
@@ -118,7 +118,7 @@ func cleanupDir(ctx context.Context, storage StorageAPI, volume, dirPath string)
// Entry path is empty, just delete it.
if len(entries) == 0 {
err = storage.DeleteFile(ctx, volume, entryPath)
err = storage.Delete(ctx, volume, entryPath, false)
if !IsErrIgnored(err, []error{
errDiskNotFound,
errUnformattedDisk,