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https://issues.apache.org/jira/browse/HDFS-12394?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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SammiChen reassigned HDFS-12394:
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Assignee: Wei Zhou
> Erasure coding policy cell size should not be greater than file block size
> --------------------------------------------------------------------------
>
> Key: HDFS-12394
> URL: https://issues.apache.org/jira/browse/HDFS-12394
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: erasure-coding
> Affects Versions: 3.0.0-alpha4
> Reporter: SammiChen
> Assignee: Wei Zhou
> Labels: hdfs-ec-3.0-nice-to-have
>
> Current the minimum block size is defined by
> "dfs.namenode.fs-limits.min-block-size" with default value 1MB. Default
> block size is defined by "dfs.blocksize" with default value 128MB. Maximum
> erasure coding policy cell size is defined by
> "dfs.namenode.ec.policies.max.cellsize" with default value 4MB. We need to
> make sure the erasure coding policy cell size should not be greater than file
> block size. Otherwise file read/write will fail.
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