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

["David Li (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-15958?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Li resolved ARROW-15958.
------------------------------
    Fix Version/s: 9.0.0
       Resolution: Fixed

Issue resolved by pull request 12656
[https://github.com/apache/arrow/pull/12656]

> [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
>            Assignee: David Li
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 9.0.0
>
>          Time Spent: 1h 40m
>  Remaining Estimate: 0h
>
> {{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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