25359: Metric metadata endpoint r=sploiselle a=sploiselle This PR integrates two changes: - Makes explicit more metric metadata properties - Adds an endpoint to make all metric metadata externally consumbale ## Explicit Metric Metadata Timeseries metrics had two implicit metadata properties: - Units, which is the unit of data collected (Count, Bytes, or Duration) - AxisLabel, which is the element measured by the metric (i.e. what the Y-axis represents) Because these properties are used to display charts to users and do not change for the lifetime of the metric, they should be defined when the when the metric is created. This ensures end users can consistently and meaningfully interpret data in the way the metric's author intended. ### Testing This PR adds a test to `status_test.go` to ensure that all metrics metadata have a Name, Help, and AxisLabel defined. Because Units have a zero value of "Count", the test doesn't check for it being set. ## Metric Metadata Endpoint This PR adds an endpoint at `<Admin UI>/_admin/metricmetadata` that exposes all metric metadata, including the new Units and AxisLabel properties added in the first commit. While this endpoint doesn't have much intrinsic value, it will be leveraged to generate a catalog of timeseries charts. That commit is ready to go, but is large, so wanted to make more incremental changes by splitting them into two PRs. 26949: ui: properly segregate/aggregate app sql stats r=couchand a=couchand Previously we had been a bit lazy about the apps that statement statistics roll into, but feedback highlighted that the app was an important distinction for users. This adds support for apps to the statements list and details pages. The statements list now has a filter above the list to choose an app: <img width="548" alt="screen shot 2018-06-25 at 1 04 56 pm" src="https://user-images.githubusercontent.com/793969/41864643-aeba45bc-7878-11e8-85ff-60d39d71beb6.png"> The details page now lists all apps a query appears in (when viewing all apps) or just the stats relevant to a single app. <img width="466" alt="screen shot 2018-06-25 at 1 05 05 pm" src="https://user-images.githubusercontent.com/793969/41864691-d196db7c-7878-11e8-89d5-32717753a935.png"> Fixes: #26990 27039: sql: fix panic when renaming a scalar source r=justinj a=justinj Quite an edge case, found with RSG. Release note (bug fix): fixed a panic that could occur when renaming a scalar function used as a data source. 27042: cli: Fix ordering of columns in node status r=RaduBerinde a=neeral The header and data for columns updated_at and started_at were swapped. Example output before: ``` $ cockroach node status --insecure +----+--------------------+------------------------------------------+ | id | address | build | updated_at | started_at | is_live | +----+--------------------+------------------------------------------+ | 1 | neeral-M51AC:26257 | v2.1.0-alpha.20180604-872-g50ae724 | 2018-06-28 00:52:49.925433+00:00 | 2018-06-28 00:52:49.925691+00:00 | true | | 2 | neeral-M51AC:25262 | v2.1.0-alpha.20180604-848-ga22c68d-dirty | 2018-06-27 22:18:44.617039+00:00 | 2018-06-28 00:42:54.651608+00:00 | false | | 3 | neeral-M51AC:25263 | v2.1.0-alpha.20180604-849-g1782ff9-dirty | 2018-06-28 00:19:53.20144+00:00 | 2018-06-28 00:53:07.018604+00:00 | true | | 4 | neeral-M51AC:25264 | v2.1.0-alpha.20180604-849-g1782ff9-dirty | 2018-06-28 00:19:59.773341+00:00 | 2018-06-28 00:52:59.80999+00:00 | true | | 5 | neeral-M51AC:25265 | v2.1.0-alpha.20180604-849-g1782ff9-dirty | 2018-06-28 00:20:01.927442+00:00 | 2018-06-28 00:53:01.962355+00:00 | true | +----+--------------------+------------------------------------------+ ``` 27048: build: assert clean for submodules r=benesch a=tschottdorf I saw failing builds due to a dirty `c-deps/protobuf` directory; this isn't cleaned up by the prior version of the script (and it also does not tell you the diff). This new one will. Also added a second `-f` to `git clean` which does not stop in nested repos (excluding submodules). We don't need that but it seemed right to add it. Release note: None 27053: opt: fix panic in generating tuple IN constraints r=justinj a=justinj Fixes #27016. Previously this code would panic if there were no constrainable columns. I've added an equivalent test case to the one provided, but it will be difficult to run the test provided until #27034 lands. I suspect the problem there was with placeholders (it didn't panic with the old code and the placeholders replaced with constants). We should also consider adding prepared statement support to opt_tester so that we can test situations like that in the future. Release note (bug fix): Fix a panic in the optimizer with IN filters. Co-authored-by: Sean Loiselle <himself@seanloiselle.com> Co-authored-by: Andrew Couch <andrew@cockroachlabs.com> Co-authored-by: Justin Jaffray <justin@cockroachlabs.com> Co-authored-by: neeral <neeral@users.noreply.github.com> Co-authored-by: Tobias Schottdorf <tobias.schottdorf@gmail.com>

ui: statements page charts break on single-execution queries #26990

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