[jira] [Created] (IGNITE-13366) Prohibit unconditional automatic deletion of data files if WAL was disabled prior to node's shutdown

["Sergey Chugunov (Jira)" <ji...@apache.org>]

Sergey Chugunov created IGNITE-13366:
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             Summary: Prohibit unconditional automatic deletion of data files if WAL was disabled prior to node's shutdown
                 Key: IGNITE-13366
                 URL: https://issues.apache.org/jira/browse/IGNITE-13366
             Project: Ignite
          Issue Type: Task
          Components: persistence
    Affects Versions: 2.8.1
            Reporter: Sergey Chugunov
            Assignee: Sergey Chugunov
             Fix For: 2.10


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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