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  1. IMPALA
  2. IMPALA-6194

Ensure all fragment instances notice cancellation

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Details

    • Improvement
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • None
    • Backend

    Description

      Currently queries can get stuck in an uncancellable state, e.g. when blocking on function calls or condition variables without periodically checking for cancellation. We should eliminate all those calls and make sure we don't re-introduce such issues. One option would be a watchdog to check that each fragment instance regularly calls RETURN_IF_CANCEL.

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          is related to

          Improvement - An improvement or enhancement to an existing feature or task. IMPALA-7738 Implement timeouts for hdfsOpenFile() calls

          • Critical - Crashes, loss of data, severe memory leak.
          • Resolved
          relates to

          New Feature - A new feature of the product, which has yet to be developed. IMPALA-9124 Transparently retry queries that fail due to cluster membership changes

          • Critical - Crashes, loss of data, severe memory leak.
          • In Progress

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              Unassigned Unassigned
              lv Lars Volker
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              Dates

                Created:
                Updated: