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Date: Sat, 1 Aug 2009 13:28:14 -0700 (PDT)
From: "Aleksey Shipilev (JIRA)" <jira@apache.org>
To: issues@commons.apache.org
Subject: [jira] Closed: (COMPRESS-83) GzipCompressorOutputStream should
 forward write(byte[] buf) and write(byte[] buf, int off, int len) to
 underlying stream
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     [ https://issues.apache.org/jira/browse/COMPRESS-83?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Aleksey Shipilev closed COMPRESS-83.
------------------------------------


Agree with the commit, closing the issue.

> GzipCompressorOutputStream should forward write(byte[] buf) and write(byte[] buf, int off, int len) to underlying stream
> ------------------------------------------------------------------------------------------------------------------------
>
>                 Key: COMPRESS-83
>                 URL: https://issues.apache.org/jira/browse/COMPRESS-83
>             Project: Commons Compress
>          Issue Type: Improvement
>    Affects Versions: 1.0
>         Environment: Linux
>            Reporter: Aleksey Shipilev
>             Fix For: 1.1
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> Current version of GzipCompressorOutputStream decorates only write(int b) method for underlying java.zip.util.GZipOutputStream.
> In common scenario of:
> OutputStream os = ...;
> GzipCompressorOutputStream gcos = new GzipCompressorOutputStream(os);
> [do extensive write(byte[] buf]
> this results in very slow _unbuffered_ write. This is particularly evident if the code changes to:
> OutputStream os = ...;
> GZIPOutputStream gos = new GZIPOutputStream(os);
> [do extensive write(byte[] buf]
> ...which is blazingly faster.
> In my environment, packing 100 Mb stream with Commons wrapper takes about 120 seconds, while using java.util.zip directly takes less than 1 second. 
> This performance hit is way too bad for simple wrapper.

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