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Werk #10739: send notifications chronologically

Component Notifications
Title send notifications chronologically
Date Jan 24, 2020
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.0.0i1 Checkmk Pro, Checkmk Ultimate MT
1.6.0p9 Checkmk Pro, Checkmk Ultimate MT
1.5.0p25 Checkmk Pro, Checkmk Ultimate MT

Due to a bug in the notification spooler new spoolfiles were processed before old spoolfiles. This may lead to suprising results. If e.g. a host goes DOWN and UP in a short time interval the UP notification may arrive before the DOWN notification.

Now the notification spooler processes the notifications in the order of occurance, i.e. the DOWN notification will be sent before the UP notification.

SUP-1708

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