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From "Konstantin Boudnik (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HDFS-608) BlockReceiver:receivePacket(): packet's header parsing logic is complicated. Refactoring will help w/ testing efforts
Date Sat, 22 May 2010 00:52:17 GMT

     [ https://issues.apache.org/jira/browse/HDFS-608?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Konstantin Boudnik resolved HDFS-608.
-------------------------------------

    Resolution: Duplicate

This is DUP of HDFS-881

> BlockReceiver:receivePacket(): packet's header parsing logic is complicated. Refactoring
will help w/ testing efforts
> ---------------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-608
>                 URL: https://issues.apache.org/jira/browse/HDFS-608
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Konstantin Boudnik
>            Assignee: Konstantin Boudnik
>         Attachments: HDFS-608.patch
>
>
> Current logic of getting an information from a packet header is kinda complicated with
all shifting along the internal data buffer back and forth. 
> Besides, an absence of clear API to access a packet header's information makes pipeline
testing effort (even with aspects' application) to be a very complicated or even impossible.

> It'd be very nice to have a separate data container which will keep all the information
about a packet header within and will initialized once when a new packet is acquired. 
> In order to speed-up pipeline testing needed for append (HDFS-265) this modification
might implemented in three different states:
> - introduce new header structure and refactor receivePacket()
> - refactor readNextPacket so it it will acquire next packet in initialize its header
> - refactor the sender side to use the packet's header structure as the receiver does.

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