Fixed Querier duplicate labels checks & made sure store will be not b…

…locked for older Queriers.

Fixes #1632

Signed-off-by: Bartek Plotka <bwplotka@gmail.com>

CHANGELOG.md

@@ -11,9 +11,14 @@ We use *breaking* word for marking changes that are not backward compatible (rel
 
 ## Unreleased
 
+### Fixed
+
+- [#1632](https://github.com/thanos-io/thanos/issues/1632) Removes all duplicates checks on Thanos Querier; Made Store Gateway compatible with older Querier versions.
+ NOTE: `thanos_store_node_info` metric is now per `external_labels` and `store_type` now.
+
 ## [v0.8.0](https://github.com/thanos-io/thanos/releases/tag/v0.8.0) - 2019.10.10
 
-Lot's of improvements this release! Outstanding items:
+Lot's of improvements this release! Noteworthy items:
 - First Katacoda tutorial! 🐱
 - Fixed Deletion order causing Compactor to produce not needed 👻 blocks with missing random files. 
 - Store GW memory improvements (more to come!).
@@ -48,7 +53,7 @@ Selecting blocks to serve depends on the result of block labels relabeling.
 - [#1362](https://github.com/thanos-io/thanos/pull/1362) `query.replica-label` configuration can be provided more than
 once for multiple deduplication labels like: `--query.replica-label=prometheus_replica --query.replica-label=service`.
 - [#1581](https://github.com/thanos-io/thanos/pull/1581) Thanos Store now can use smaller buffer sizes for Bytes pool; reducing memory for some requests.
-- [#1622](https://github.com/thanos-io/thanos/pull/1622) & [#1590](https://github.com/thanos-io/thanos/pull/1590) Updated Go to 2.13.1
+- [#1622](https://github.com/thanos-io/thanos/pull/1622) & [#1590](https://github.com/thanos-io/thanos/pull/1590) Upgraded to Go 1.13.1
 - [#1498](https://github.com/thanos-io/thanos/pull/1498) Thanos Receive change flag `labels` to `label` to be consistent with other commands.
 
 ### Fixed

go.mod

@@ -7,6 +7,7 @@ require (
 	github.com/armon/go-metrics v0.0.0-20190430140413-ec5e00d3c878
 	github.com/cespare/xxhash v1.1.0
 	github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd // indirect
+	github.com/davecgh/go-spew v1.1.1
 	github.com/fatih/structtag v1.0.0
 	github.com/fortytw2/leaktest v1.3.0
 	github.com/fsnotify/fsnotify v1.4.7