* [BUGFIX] Check if label value is valid when unmarshaling external labels from YAML. [#5316](https://github.com/prometheus/prometheus/pull/5316)
@ -531,7 +531,7 @@ and the memory is available to the kernel when it needs it.
* [BUGFIX] Exponentiation operator to drop metric name in result of operation. [#5329](https://github.com/prometheus/prometheus/pull/5329)
* [BUGFIX] Config: resolve more file paths. [#5284](https://github.com/prometheus/prometheus/pull/5284)
* [BUGFIX] Promtool: resolve relative paths in alert test files. [#5336](https://github.com/prometheus/prometheus/pull/5336)
* [BUGFIX] Set TLSHandshakeTimeout in HTTP transport. [common#179](https://github.com/prometheus/common/pull/179)
* [BUGFIX] Set TLSHandshakeTimeout in HTTP transport. [common#179](https://github.com/prometheus/common/pull/179)
* [BUGFIX] Use fsync to be more resilient to machine crashes. [tsdb#573](https://github.com/prometheus-junkyard/tsdb/pull/573) [tsdb#578](https://github.com/prometheus-junkyard/tsdb/pull/578)
* [BUGFIX] Keep series that are still in WAL in checkpoints. [tsdb#577](https://github.com/prometheus-junkyard/tsdb/pull/577)
@ -545,10 +545,10 @@ and the memory is available to the kernel when it needs it.
This release uses Write-Ahead Logging (WAL) for the remote_write API. This currently causes a slight increase in memory usage, which will be addressed in future releases.
* [CHANGE] Default time retention is used only when no size based retention is specified. These are flags where time retention is specified by the flag `--storage.tsdb.retention` and size retention by `--storage.tsdb.retention.size`. [#5216](https://github.com/prometheus/prometheus/pull/5216)
* [CHANGE] `prometheus_tsdb_storage_blocks_bytes_total` is now `prometheus_tsdb_storage_blocks_bytes`. [tsdb#506](https://github.com/prometheus-junkyard/tsdb/pull/506)
* [FEATURE] [EXPERIMENTAL] Time overlapping blocks are now allowed; vertical compaction and vertical query merge. It is an optional feature which is controlled by the `--storage.tsdb.allow-overlapping-blocks` flag, disabled by default. [tsdb#370](https://github.com/prometheus-junkyard/tsdb/pull/370)
* [CHANGE] `prometheus_tsdb_storage_blocks_bytes_total` is now `prometheus_tsdb_storage_blocks_bytes`. [tsdb#506](https://github.com/prometheus-junkyard/tsdb/pull/506)
* [FEATURE] [EXPERIMENTAL] Time overlapping blocks are now allowed; vertical compaction and vertical query merge. It is an optional feature which is controlled by the `--storage.tsdb.allow-overlapping-blocks` flag, disabled by default. [tsdb#370](https://github.com/prometheus-junkyard/tsdb/pull/370)
* [ENHANCEMENT] Use the WAL for remote_write API. [#4588](https://github.com/prometheus/prometheus/pull/4588)
* [ENHANCEMENT] UI enhancements with upgrade to Bootstrap 4. [#5226](https://github.com/prometheus/prometheus/pull/5226)
* [ENHANCEMENT] Reduce time that Alertmanagers are in flux when reloaded. [#5126](https://github.com/prometheus/prometheus/pull/5126)
* [ENHANCEMENT] Limit number of metrics displayed on UI to 10000. [#5139](https://github.com/prometheus/prometheus/pull/5139)
@ -583,7 +583,7 @@ We're rolling back the Dockerfile changes introduced in 2.6.0. If you made chang
* [CHANGE] Rollback Dockerfile to version at 2.5.0. Rollback of the breaking change introduced in 2.6.0. [#5122](https://github.com/prometheus/prometheus/pull/5122)
* [FEATURE] Add subqueries to PromQL. [#4831](https://github.com/prometheus/prometheus/pull/4831)
* [FEATURE] [EXPERIMENTAL] Add support for disk size based retention. Note that we don't consider the WAL size which could be significant and the time based retention policy also applies. [#5109](https://github.com/prometheus/prometheus/pull/5109) [tsdb#343](https://github.com/prometheus-junkyard/tsdb/pull/343)
* [FEATURE] [EXPERIMENTAL] Add support for disk size based retention. Note that we don't consider the WAL size which could be significant and the time based retention policy also applies. [#5109](https://github.com/prometheus/prometheus/pull/5109) [tsdb#343](https://github.com/prometheus-junkyard/tsdb/pull/343)
* [FEATURE] Add CORS origin flag. [#5011](https://github.com/prometheus/prometheus/pull/5011)
* [ENHANCEMENT] Consul SD: Add tagged address to the discovery metadata. [#5001](https://github.com/prometheus/prometheus/pull/5001)
* [ENHANCEMENT] Kubernetes SD: Add service external IP and external name to the discovery metadata. [#4940](https://github.com/prometheus/prometheus/pull/4940)
@ -595,8 +595,8 @@ We're rolling back the Dockerfile changes introduced in 2.6.0. If you made chang
* [BUGFIX] Don't depend on given order when comparing samples in alert unit testing. [#5049](https://github.com/prometheus/prometheus/pull/5049)
* [BUGFIX] Make sure the retention period doesn't overflow. [#5112](https://github.com/prometheus/prometheus/pull/5112)
* [BUGFIX] Make sure the blocks don't get very large. [#5112](https://github.com/prometheus/prometheus/pull/5112)
* [BUGFIX] Don't generate blocks with no samples. [tsdb#374](https://github.com/prometheus-junkyard/tsdb/pull/374)
* [BUGFIX] Reintroduce metric for WAL corruptions. [tsdb#473](https://github.com/prometheus-junkyard/tsdb/pull/473)
* [BUGFIX] Don't generate blocks with no samples. [tsdb#374](https://github.com/prometheus-junkyard/tsdb/pull/374)
* [BUGFIX] Reintroduce metric for WAL corruptions. [tsdb#473](https://github.com/prometheus-junkyard/tsdb/pull/473)
## 2.6.1 / 2019-01-15
@ -689,12 +689,12 @@ We're rolling back the Dockerfile changes introduced in 2.6.0. If you made chang
The last release didn't have bugfix included due to a vendoring error.