eBay / eBay/HomeStore

Leader yield if any IO or disk down errors

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#563 0 comments 0 reactions 0 assignees View on GitHub

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Replication
Dominant language
C++
Stars
29
Forks
30
Avg merge
2d 4h
Merged PRs (30d)
6

Description

From @yamingk One issue I see is: when SM experienced disk down, if it happens on leader, HomeStore should yield leadership immediately, the reason is, if we rely on CM to do that, there needs to be some manual ops to kicks in or even if it is automated from CM layer, it also takes some time for CM to detect that. If Homestore can yield leadership it to other member, the other two copies can serve traffic immeidately without any SOPs need to be taken in production.

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Research direction

No source file, test, or entry point is named. Start by locating HomeStore's handling of leader state and SM disk or IO errors, then inspect how CM-triggered leadership changes are represented. Done means a leader yields promptly after the relevant failure so the other copies can serve traffic without manual production operations.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
distributed-systems
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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