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https://issues.apache.org/jira/browse/HDFS-8813?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jing Zhao updated HDFS-8813:
----------------------------
Resolution: Fixed
Hadoop Flags: Reviewed
Fix Version/s: HDFS-7285
Status: Resolved (was: Patch Available)
+1. I've committed this. Thanks for the contribution, [~walter.k.su]!
> Erasure Coding: Client no need to decode missing parity blocks
> --------------------------------------------------------------
>
> Key: HDFS-8813
> URL: https://issues.apache.org/jira/browse/HDFS-8813
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Walter Su
> Assignee: Walter Su
> Priority: Minor
> Fix For: HDFS-7285
>
> Attachments: HDFS-8813-HDFS-7285.01.patch
>
>
> Assume 6+3 schema.
> Assume data block #2 is missing, then InputStream tries to read parity block
> #6.
> Assume parity block #6 is missing too. And InputStream successfully reads
> parity block #7.
> Then begin to decode.
> Currently InputStream will decode #2 and #6. But client(user) only need #2.
> The parity block #6 will be disposed.
> The improvement is we only decode #2.
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