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https://issues.apache.org/jira/browse/HDFS-7679?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kai Zheng updated HDFS-7679:
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Description: Based on the work done, we will have similar constructs like
ECEncoder/Decoder, local/remote block reader/writer in both client and DataNode
side, so it's possible to refactor the codes further and unify these constructs
to eliminate possible duplicate codes. (was: EC tasks such as client striping
write, encode replicated file to EC style, transform block layout from
contiguous to striping, reconstruct some corrupt blocks, etc, have similar
behavior. They all read data from client/BlockGroup, encode/decode them, and
write the results to some datanodes. So we can use a unified framework to
handle all these tasks. We can use different BlockGroupReader,
Coder(ECEncoder/ECDecoder) and BlockWriter to handle different EC tasks.)
> Unifying erasure coder work, block reader and block writer across client and
> DataNode
> -------------------------------------------------------------------------------------
>
> Key: HDFS-7679
> URL: https://issues.apache.org/jira/browse/HDFS-7679
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Li Bo
> Assignee: Li Bo
> Attachments: ECEncodeDecodeFramework.patch
>
>
> Based on the work done, we will have similar constructs like
> ECEncoder/Decoder, local/remote block reader/writer in both client and
> DataNode side, so it's possible to refactor the codes further and unify these
> constructs to eliminate possible duplicate codes.
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