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Posted to derby-dev@db.apache.org by "Martin JANDA (JIRA)" <ji...@apache.org> on 2014/01/13 18:02:52 UTC

[jira] [Created] (DERBY-6456) Infinite loop in NetworkServerControlImpl when reply >= 32k

Martin JANDA created DERBY-6456:
-----------------------------------

             Summary: 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


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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