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https://issues.apache.org/jira/browse/HADOOP-11840?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14507902#comment-14507902
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Kai Zheng commented on HADOOP-11840:
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This will follow on HDFS-8156 when supporting multiple schemas.
Copied some discussion from HDFS-8156 with [~szetszwo]:
{quote}
> Could two schemas having the same name but different set of logical
parameters?
We should avoid such schemas in a system. Will update the document
reflecting this thought.
> Should two schemas having the same set of logical parameters but
different names be considered the same?
We should also avoid such schemas. Will update the document reflecting this
thought.
{quote}
> ECSchema are considered as not equal even if they are logically equal
> ---------------------------------------------------------------------
>
> Key: HADOOP-11840
> URL: https://issues.apache.org/jira/browse/HADOOP-11840
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: io
> Reporter: Tsz Wo Nicholas Sze
> Assignee: Kai Zheng
>
> For example, a schema could have an empty options and another schema has all
> the fields are the same except that options has NUM_DATA_UNITS_KEY =>
> numDataUnits. Then, these two schemas are considered as not equal.
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