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https://issues.apache.org/jira/browse/IGNITE-13366?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17213155#comment-17213155
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Sergey Chugunov commented on IGNITE-13366:
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[~akalashnikov],
Agree with you on first three points. I suggest to address only the point about
using task name instead of UUID as it affects public API.
Other two points are related to internal implementation, we could improve them
later in related task about defragmentation. Does it sound good to you?
I also thought about versioning but only separate Maintenance Tasks, not whole
file. It may be handy but firstly we should consider use cases for it. I feel
this also affects only internal implementation so we can discuss it separately
and implement later.
> Special mode for maintenance of Ignite node. Employing Maintenance Mode for
> clearing corrupted PDS files.
> ---------------------------------------------------------------------------------------------------------
>
> Key: IGNITE-13366
> URL: https://issues.apache.org/jira/browse/IGNITE-13366
> Project: Ignite
> Issue Type: New Feature
> Components: persistence
> Affects Versions: 2.8.1
> Reporter: Sergey Chugunov
> Assignee: Sergey Chugunov
> Priority: Critical
> Labels: IEP-53
> Fix For: 2.10
>
> Original Estimate: 168h
> Time Spent: 1h 40m
> Remaining Estimate: 166h 20m
>
> If node with persistence is stopped when WAL was disabled for a cache (no
> matters because of rebalancing in progress or by explicit user request) on
> next node start all data files of that cache are removed automatically and
> unconditionally.
> This behavior may be unexpected for users as they may not understand all
> consequences of disabling WAL locally (for rebalancing) or globally (via
> IgniteCluster API call). Also it is not smart enough as there is no point in
> deleting consistent data files.
> We should change this behavior to the following list: no automatic deletions
> whatsoever. If data files are consistent (equivalent to: no checkpoint was
> running when node was stopped) start up normally. If data files are
> corrupted, don't let the node start.
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