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Posted to jira@arrow.apache.org by "David Li (Jira)" <ji...@apache.org> on 2022/03/17 12:36:00 UTC

[jira] [Created] (ARROW-15958) [Java][Docs] Document HistoricalLog for debugging

David Li created ARROW-15958:
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             Summary: [Java][Docs] Document HistoricalLog for debugging
                 Key: ARROW-15958
                 URL: https://issues.apache.org/jira/browse/ARROW-15958
             Project: Apache Arrow
          Issue Type: Improvement
          Components: Documentation, Java
            Reporter: David Li


{{BufferLedger}} has a {{HistoricalLog}} which records stack traces at various events in the buffer's life, such as when it was first allocated and upon incrementing/decrementing reference counts. While somewhat of an implementation detail, this information is useful for debugging, especially for tracking down memory leaks. We could document it (with a suitable warning).

However, the stack trace is less useful than it first appears because it accidentally truncates the log. We should fix that too.



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