[jira] [Commented] (SPARK-21283) FileOutputStream should be created as append mode

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-21283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16071896#comment-16071896 ] 

Apache Spark commented on SPARK-21283:
--------------------------------------

User '10110346' has created a pull request for this issue:
https://github.com/apache/spark/pull/18507

> FileOutputStream should be created as append mode
> -------------------------------------------------
>
>                 Key: SPARK-21283
>                 URL: https://issues.apache.org/jira/browse/SPARK-21283
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>    Affects Versions: 2.3.0
>            Reporter: liuxian
>            Priority: Minor
>
> `FileAppender` is used to write `stderr` and `stdout` files  in `ExecutorRunner`.
>  But before writing `ErrorStream` into the the `stderr` file, the header information has been written into ,if  FileOutputStream is  not created as append mode, the  header information will be lost



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