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https://issues.apache.org/jira/browse/HDFS-7345?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhe Zhang updated HDFS-7345:
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Parent Issue: HDFS-8031 (was: HDFS-7285)
> Local Repairable Codes (LRC)
> ----------------------------
>
> Key: HDFS-7345
> URL: https://issues.apache.org/jira/browse/HDFS-7345
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Kai Zheng
> Assignee: Kai Zheng
> Attachments: LRC-compare.pdf
>
>
> HDFS-7285 proposes to support Erasure Coding inside HDFS, supports multiple
> Erasure Coding codecs via pluggable codec framework (HDFS-7337) and
> implements Reed Solomon code by default. This is to support a more advanced
> coding mechanism, Local Repairable Codes (LRC). As discussed in [Xorbas
> Hadoop Project Page|http://smahesh.com/HadoopUSC/] and the paper attached
> there, LRC can reduce the number of erasure coding chunks that need to be
> read when recovering missing data chunks, while still keeping the storage
> overhead low.
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