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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 updated HDFS-12394:
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Description:
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, file read/write will fail.
was:
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, file read/write will fail.
> 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
> 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, file read/write will fail.
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