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[STORM-3144] Extend metrics on Nimbus - Storm - [issue]
...Metrics include: File upload time Nimbus restart count Nimbus loss of leadership: meter marking when a nimbus node gains or loses leadership Excessive scheduling time (both duration distribu...    Author: Zhengdai Hu , 2018-09-21, 17:38
[STORM-3101] Fix unexpected metrics registration in StormMetricsRegistry - Storm - [issue]
...Metrics that are registered using StormMetricRegistry all added through static method from the registry class, and attached to a singleton MetricRegistry object per process. Currently most m...    Author: Zhengdai Hu , 2018-09-21, 17:27
[STORM-3104] Delayed worker launch due to accidental transitioning in state machine - Storm - [issue]
...In, there is a comparison in handleWaitingForBlobUpdate() between dynamic state's current assignment and new assignment, which accidentally route back state machine just trans...    Author: Zhengdai Hu , 2018-09-21, 17:27
[STORM-3173] flush metrics to ScheduledReporter on shutdown - Storm - [issue]
...We lose shutdown related metrics that we should alert on at shutdown. We should flush metrics on a shutdown.    Author: Zhengdai Hu , 2018-09-21, 17:25
[STORM-3147] Port ClusterSummary as Metrics to StormMetricsRegistry - Storm - [issue]    Author: Zhengdai Hu , 2018-09-19, 18:22
[STORM-3162] Race condition at updateHeartbeatCache - Storm - [issue]
...This is discovered during testing for STORM-3133. Travis-CI log can be found here.Specifically, updateHeartbeatCache can be invoked both by Nimbus (at `Nimbus#updateHeartBeats`) and by Super...    Author: Zhengdai Hu , 2018-09-17, 20:31
[STORM-3193] Improve LogviewerLogSearchHandler - Storm - [issue]
...One thing that is worthy of noticing: Storm UI currently interweaves different search API regarding searching functionalities and it's kind of confusing.Specifically:For the search button at...    Author: Zhengdai Hu , 2018-08-10, 21:16
[STORM-3133] Extend metrics on Nimbus and LogViewer - Storm - [issue]
...Include but not limited toLogviewer1. Clean-up time 2. Time to complete one clean up loop Time.  3. Disk usage by logs before cleanup and After cleanup loop. ( Just like GC.?) ...    Author: Zhengdai Hu , 2018-08-10, 17:13
[STORM-3191] Migrate more items from ClusterSummary to metrics - Storm - [issue]
...The following summary items haven't been ported as nimbus metrics yet.//Declared in StormConf. I don't see the value in reporting so.SUPERVISOR_TOTAL_RESOURCE,//May be able to aggregate base...    Author: Zhengdai Hu , 2018-08-10, 16:11
[STORM-3189] Remove unused data file LogViewer api - Storm - [issue]
...Discovered in STORM-3133.`findNMatches` in LogviewerLogSearchHandler returns a `Matched` object which contains a field `fileOffset`. However, in current implementation, `fileOffset` behaves ...    Author: Zhengdai Hu , 2018-08-09, 18:18