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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* Caches are cleaned up when out of date or superseded by a more recent one.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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cmd/background-newdisks-heal-ops.go
+2 -2
View File
@@ -175,8 +175,8 @@ func monitorLocalDisksAndHeal(ctx context.Context, z *erasureServerSets, bgSeq *
logger.Info("Healing disk '%s' on %s zone complete", disk, humanize.Ordinal(i+1))
if err := disk.DeleteFile(ctx, pathJoin(minioMetaBucket, bucketMetaPrefix),
healingTrackerFilename); err != nil && !errors.Is(err, errFileNotFound) {
if err := disk.Delete(ctx, pathJoin(minioMetaBucket, bucketMetaPrefix),
healingTrackerFilename, false); err != nil && !errors.Is(err, errFileNotFound) {
logger.LogIf(ctx, err)
continue
}