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  1. ROOT
  2. ROOT-9770

[DF] Race condition in Snapshot

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Blocker
    • Resolution: Fixed
    • Affects Version/s: 6.16/00, 6.14/08
    • Fix Version/s: None
    • Component/s: I/O
    • Labels:
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    • Environment:

      any

      Description

      Symptom: under certain conditions (to be determined, but our tests do not trigger the problem) the output file of a Snapshot is missing some entries.

      The problem was first reported on the forum here. I can reproduce it locally, with a debug build of master as well as an optimized build of v6.14.04.

      A first investigation points to lifetime issues of the thread-local TBufferMergerFiles that tasks write their task-local output TTrees to. Work in progress.

       

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            • Assignee:
              dpiparo Danilo Piparo
              Reporter:
              eguiraud Enrico Guiraud
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