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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-12387) Improve S3AFastOutputStream memory management
Date Wed, 29 Jun 2016 11:12:37 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-12387?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Steve Loughran updated HADOOP-12387:
------------------------------------
    Parent Issue: HADOOP-13204  (was: HADOOP-11694)

> Improve S3AFastOutputStream memory management
> ---------------------------------------------
>
>                 Key: HADOOP-12387
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12387
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>            Reporter: Thomas Demoor
>            Assignee: Thomas Demoor
>
> The use of ByteArrayOutputStream causes unexpected memory copies that causes unintuitive
memory usage for certain combinations of the configuration parameters. Replacing it by more
fine grained memory buffer management would fix this, reduce memory usage and eliminate a
memory copy.



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