Commits on Jan 25, 2019

1. Upgraded Prometheus and TSDB deps. …

   This PR does not add anything, however by upgrading Prometheus from 2.3.2 to master tip and same for TSDB it may affects few things.
   Bigger packages we use and changes I found manually:
   * prometheus/prometheus/discovery/file
     * [ENHANCEMENT] Discovery: Improve performance of previously slow updates of changes of targets. #4526 ?? cc @ivan-valkov
     * [BUGFIX] Wait for service discovery to stop before exiting #4508 ??
   * prometheus/prometheus/promql:
     * [BUGFIX] PromQL: Fix a goroutine leak in the lexer/parser. #4858
     * [BUGFIX] Change max/min over_time to handle NaNs properly. #438
     * [BUGFIX] Check label name for `count_values` PromQL function. #4585
     * [BUGFIX] Ensure that vectors and matrices do not contain identical label-sets. #4589
     * [ENHANCEMENT] Optimize PromQL aggregations #4248
     * [BUGFIX] Only add LookbackDelta to vector selectors #4399
     * [BUGFIX] Reduce floating point errors in stddev and related functions #4533
   
   * prometheus/prometheus/rules:
     * New metrics exposed! (prometheus evaluation!)
     * [ENHANCEMENT] Rules: Error out at load time for invalid templates, rather than at evaluation time. #4537
   
   * prometheus/tsdb/index: Index reader optimizations.
   
   There are things/fixes we may reuse in next PRs (TODO create gh issues for those):
   * api changes (warnings support on Prometheus UI and Query API)
   * UI fixes:
     * [ENHANCEMENT] Web UI: Support console queries at specific times. #4764
     * [ENHANCEMENT] Web UI: Avoid browser spell-checking in expression field. #472
   * Use notifier package once prometheus/prometheus#5025 is merged.
   * Ruler UI fixes:
    * [ENHANCEMENT] Show rule evaluation errors in UI #4457
   
   Follopw up issues we can fix in further PRs:
   * QueryAPI has now api/v1/labels that Thanos does not yet support. Created issue with details: #702
   * #703
   
   Signed-off-by: Bartek Plotka <bwplotka@gmail.com>

   

   bwplotka committed Jan 25, 2019
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