[jira] [Commented] (HDFS-8494) Remove hard-coded chunk size in favor of ECZone

["Kai Zheng (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDFS-8494?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14566818#comment-14566818 ] 

Kai Zheng commented on HDFS-8494:
---------------------------------

bq. BlockInfoStriped needs cellSize to calculate consumed space.
Did HDFS-8375 miss the change required here? What's the value that's used in existing codes?
bq. Is it necessary to pass ErasureCodingZone to BlockInfoStriped?
Please don't. If necessary please just pass {{cellSize}} along with schema as did in HDFS-8375.

[~vinayrpet], do we have anything to add here regarding the chunkSize/cellSize stuff here? 
I thought we could change {{HdfsConstants.BLOCK_STRIPED_CELL_SIZE}} to {{DEFAULT_BLOCK_STRIPED_CELL_SIZE}} and ensure it's only used when really necessary.

> Remove hard-coded chunk size in favor of ECZone
> -----------------------------------------------
>
>                 Key: HDFS-8494
>                 URL: https://issues.apache.org/jira/browse/HDFS-8494
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>    Affects Versions: HDFS-7285
>            Reporter: Kai Sasaki
>            Assignee: Kai Sasaki
>             Fix For: HDFS-7285
>
>
> It is necessary to remove hard-coded values inside NameNode configured in {{HdfsConstants}}. In this JIRA, we can remove {{chunkSize}} gracefully in favor of HDFS-8375.
> Because {{cellSize}} is now originally stored only in {{ErasureCodingZone}}, {{BlockInfoStriped}} can receive {{ErasureCodingZone}} instead of {{ECSchema}} when its initialization.



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