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https://issues.apache.org/jira/browse/HDFS-8481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14562434#comment-14562434
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Walter Su commented on HDFS-8481:
---------------------------------
*A*
decodeAndFillBuffer(..) has multiple functions, and is hard to read.
1. copy {{alignedStripe}} to {{decodeInputs}}
2. decode {{decodeInputs}} to {{outputs}}
3. copy {{outputs}} to {{buf}}
To me, {{decodeInputs}} should be prepared before calling
{{decodeAndFillBuffer}}. How about we let caller do the 1st job? Or make 1st
job an independent function so caller can call it.
*B*
buf[] is given by user. User will reuse it.
We should reuse decodeInputs[][] inside. Memory maybe cheap to client, but is
precious to Datanode. We can improve this in another jira.
> Erasure coding: remove workarounds for codec calculation
> --------------------------------------------------------
>
> Key: HDFS-8481
> URL: https://issues.apache.org/jira/browse/HDFS-8481
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Zhe Zhang
> Assignee: Zhe Zhang
> Attachments: HDFS-8481-HDFS-7285.00.patch,
> HDFS-8481-HDFS-7285.01.patch
>
>
> After HADOOP-11847 and related fixes, we should be able to properly calculate
> decoded contents.
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