Fix unnecessary and incorrect reallocation #1041
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…lemetry#1041) * Resolve bug where TA doesn't allocate all targets * Cleanup cleanup * Changed how targets and collectors are allocated * Comments * added a test * Fix comment spacing * Updated based on feedback * Metrics fix, comment * updated from feedback * Change where metric is recorded
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Closes #1038, solves an issue where the allocator re-assigns collectors unnecessarily. This is accomplished by removing the unnecessary logic around allocating targets and collectors as they come in. Previously, the collectors were entirely cleared whenever the
SetCollectors()method was called. A similar amount of confusion happened with discovered targets where thetargetsWaitingmap which was used for decisions in allocation would be cleared, allowing for a scenario where one target could be assigned to multiple collectors.The new logic combines the
SetWaitingTargetsandprocessWaitingTargetsmethods in to one to help clarify the logic. Logic is also simplified forSetCollectorswhich simply reassigns all targets discovered after the changed collector list is processed.Before this change:
After this change: