SammiChen created HDFS-12394:
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Summary: 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
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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