[jira] Updated: (OPENJPA-1953) Copying data from inputStream to OuputStream needs appropriate buffer size

["Michael Dick (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OPENJPA-1953?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Dick updated OPENJPA-1953:
----------------------------------

    Fix Version/s: 2.2.0

Assigning to 2.2.0. 

> Copying data from inputStream to OuputStream needs appropriate buffer size
> --------------------------------------------------------------------------
>
>                 Key: OPENJPA-1953
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-1953
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: lib
>    Affects Versions: 2.1.0
>            Reporter: Xiaoming Shi
>             Fix For: 2.2.0
>
>
> In the file:
> ./apache-openjpa-2.1.0-source/openjpa-lib/src/main/java/org/apache/openjpa/lib/meta/ZipStreamMetaDataIterator.java    line : 119
> The buffer size is fixed as 1024 bytes. With the size of the data varies, the performance can be damaged a lot. 
> We need an appropriate buffer size which depends on the size of the data to be copied. 
> This is the same as the Appache Bug (https://issues.apache.org/bugzilla/show_bug.cgi?id=32546)

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