Fetcher: add new lister that validates, but buffers files in blocks

CHANGELOG.md

@@ -39,7 +39,7 @@ We use *breaking :warning:* to mark changes that are not backward compatible (re
 
 - [#7123](https://github.com/thanos-io/thanos/pull/7123) Rule: Change default Alertmanager API version to v2.
 - [#7223](https://github.com/thanos-io/thanos/pull/7223) Automatic detection of memory limits and configure GOMEMLIMIT to match.
-- [#7282](https://github.com/thanos-io/thanos/pull/7282) Fetcher: mark metas with incomplete files as corrupted.
+- [#7282](https://github.com/thanos-io/thanos/pull/7282) Fetcher: mark metas with incomplete files as partial if configured.
 - [#7282](https://github.com/thanos-io/thanos/pull/7282) Compactor: add flag to disable cleanup of partial uploads
 
 ### Removed

cmd/thanos/compact.go

@@ -419,7 +419,7 @@ func runCompact(
 	var cleanMtx sync.Mutex
 	// TODO(GiedriusS): we could also apply retention policies here but the logic would be a bit more complex.
 	cleanPartialMarked := func() error {
-		if !conf.cleanupPartialUploads {
+		if conf.disableCleanupPartialUploads {
 			level.Info(logger).Log("msg", "cleanup of partial uploads is disabled, skipping")
 			return nil
 		}
@@ -728,7 +728,7 @@ type compactConfig struct {
 	progressCalculateInterval                      time.Duration
 	filterConf                                     *store.FilterConfig
 	disableAdminOperations                         bool
-	cleanupPartialUploads                          bool
+	disableCleanupPartialUploads                   bool
 }
 
 func (cc *compactConfig) registerFlag(cmd extkingpin.FlagClause) {
@@ -842,6 +842,5 @@ func (cc *compactConfig) registerFlag(cmd extkingpin.FlagClause) {
 	cmd.Flag("bucket-web-label", "External block label to use as group title in the bucket web UI").StringVar(&cc.label)
 
 	cmd.Flag("disable-admin-operations", "Disable UI/API admin operations like marking blocks for deletion and no compaction.").Default("false").BoolVar(&cc.disableAdminOperations)
-	cmd.Flag("compact.cleanup-partial-uploads", "Enable cleanup of partial uploads").
-		Hidden().Default("true").BoolVar(&cc.cleanupPartialUploads)
+	cmd.Flag("compact.disable-cleanup-partial-uploads", "Disable cleanup of partial uploads.").Default("false").BoolVar(&cc.disableCleanupPartialUploads)
 }