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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8744) Erasure Coding: the number of chunks in packet is not updated when writing parity data
Date Fri, 10 Jul 2015 18:09:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8744?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14622683#comment-14622683
] 

Jing Zhao commented on HDFS-8744:
---------------------------------

bq. packet_0 has 504 checksum + 64512 data
bq. packet_1 has 8 checksum + 1024 data

So do you mean we should avoid generating multiple packets for this 64KB data? Then this is
similar with HDFS-8734?

> Erasure Coding: the number of chunks in packet is not updated when writing parity data
> --------------------------------------------------------------------------------------
>
>                 Key: HDFS-8744
>                 URL: https://issues.apache.org/jira/browse/HDFS-8744
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Li Bo
>            Assignee: Li Bo
>         Attachments: HDFS-8744-HDFS-7285-001.patch, HDFS-8744-HDFS-7285-002.patch
>
>
> The member {{numChunks}} in {{DFSPacket}} is always zero if this packet contains parity
data. The calling of {{getNumChunks}} may  cause potential errors.



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