bucket: handle instances where no blocks are loaded (#2271)

* bucket: handle instances where no blocks are loaded Signed-off-by: Jacob Colvin <Jacob.Colvin@8451.com> * bucket: reject all falsy label values Signed-off-by: Jacob Colvin <Jacob.Colvin@8451.com> * bucket: update changelog Signed-off-by: Jacob Colvin <Jacob.Colvin@8451.com>
thanos-io · Mar 19, 2020 · b53e337 · b53e337
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commit b53e337
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -16,6 +16,7 @@ We use *breaking* word for marking changes that are not backward compatible (rel
 - [#2238](https://github.com/thanos-io/thanos/pull/2238) Ruler: Fixed Issue #2204 bug in alert queue signalling filled up queue and alerts were dropped
 - [#2231](https://github.com/thanos-io/thanos/pull/2231) Bucket Web - Sort chunks by thanos.downsample.resolution for better grouping
 - [#2254](https://github.com/thanos-io/thanos/pull/2254) Bucket: Fix metrics registered multiple times in bucket replicate
+- [#2271](https://github.com/thanos-io/thanos/pull/2271) Bucket Web: Fixed Issue #2260 bucket passes null when storage is empty
 
 ### Added
 

diff --git a/cmd/thanos/bucket.go b/cmd/thanos/bucket.go
@@ -486,14 +486,16 @@ func refresh(ctx context.Context, logger log.Logger, bucketUI *ui.Bucket, durati
 	})
 }
 
-func download(ctx context.Context, logger log.Logger, bkt objstore.Bucket, fetcher *block.MetaFetcher) (blocks []metadata.Meta, err error) {
+func download(ctx context.Context, logger log.Logger, bkt objstore.Bucket, fetcher *block.MetaFetcher) ([]metadata.Meta, error) {
 	level.Info(logger).Log("msg", "synchronizing block metadata")
 
 	metas, _, err := fetcher.Fetch(ctx)
 	if err != nil {
 		return nil, err
 	}
 
+	blocks := []metadata.Meta{}
+
 	for _, meta := range metas {
 		blocks = append(blocks, *meta)
 	}