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Posted to dev@hbase.apache.org by "Duo Zhang (Jira)" <ji...@apache.org> on 2025/07/04 08:51:00 UTC

[jira] [Resolved] (HBASE-28047) Deadlock when opening mob files

     [ https://issues.apache.org/jira/browse/HBASE-28047?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Duo Zhang resolved HBASE-28047.
-------------------------------
    Hadoop Flags: Reviewed
      Resolution: Fixed

> Deadlock when opening mob files
> -------------------------------
>
>                 Key: HBASE-28047
>                 URL: https://issues.apache.org/jira/browse/HBASE-28047
>             Project: HBase
>          Issue Type: Bug
>          Components: mob
>    Affects Versions: 3.0.0-alpha-4, 2.5.5
>            Reporter: Xiaolin Ha
>            Assignee: Xiaolin Ha
>            Priority: Major
>             Fix For: 3.0.0-beta-1, 2.5.6, 2.4.18, 2.6.0
>
>         Attachments: mobdeadlock.js
>
>
> The hashcode of mob file name is used in MobFileCache to lock the cached mob files, but hashcode may be repeated and the IdLock is not reentrant. Then when opening a not cached file with evicting the opened by LRU, the repeated hashcode files will bring deadlock.
> [^mobdeadlock.js]



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