[jira] [Created] (HDFS-10022) CLONE - Client gets and uses EC schema when reads and writes a stripping file

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

dragon created HDFS-10022:
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             Summary: CLONE - Client gets and uses EC schema when reads and writes a stripping file
                 Key: HDFS-10022
                 URL: https://issues.apache.org/jira/browse/HDFS-10022
             Project: Hadoop HDFS
          Issue Type: Sub-task
    Affects Versions: HDFS-7285
            Reporter: dragon
            Assignee: Kai Sasaki
             Fix For: HDFS-7285


Discussed with [~umamaheswararao] and [~vinayrpet], in client when reading and writing a stripping file, it can invoke a separate call to NameNode to request the EC schema associated with the EC zone where the file is in. Then the schema can be used to guide the reading and writing. Currently it uses hard-coded values.

Optionally, as an optimization consideration, client may cache schema info per file or per zone or per schema name. We could add schema name in {{HdfsFileStatus}} for that.



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