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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-6456) Infinite loop in NetworkServerControlImpl when reply >= 32k
Date Tue, 21 Jan 2014 08:58:19 GMT

    [ https://issues.apache.org/jira/browse/DERBY-6456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13877340#comment-13877340
] 

ASF subversion and git services commented on DERBY-6456:
--------------------------------------------------------

Commit 1559943 from [~knutanders] in branch 'code/trunk'
[ https://svn.apache.org/r1559943 ]

DERBY-6456: Infinite loop in NetworkServerControlImpl when reply >= 32k

Make sure the reply buffer in NetworkServerControlImpl is able to hold
the longest possible reply that it could see.

> Infinite loop in NetworkServerControlImpl when reply >= 32k
> -----------------------------------------------------------
>
>                 Key: DERBY-6456
>                 URL: https://issues.apache.org/jira/browse/DERBY-6456
>             Project: Derby
>          Issue Type: Bug
>          Components: Network Server
>    Affects Versions: 10.10.1.1
>            Reporter: Martin JANDA
>            Assignee: Knut Anders Hatlen
>         Attachments: d6456-1a.diff
>
>
> When size of reply in NetworkServerControlImpl  equals to 32k (max size for short) ensureDataInBuffer
is in infinite loop. clientIs.read(..., replyBuffer.length - replyBufferCount) return 0 because
'replyBuffer.length - replyBufferCount' is 0 (bytes to read).
> Steps to reproduce:
> Open many connections (for me 34) with at least 1 SELECT query. and call getRuntimeInfo().
Runtime info string.length > 32kB. Leading to infinite loop.



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