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https://issues.apache.org/jira/browse/IMPALA-9487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17635025#comment-17635025
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Michael Smith commented on IMPALA-9487:
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Update based on feedback: always show the columns. For entries that aren't
erasure coded, display {{replication}} (based on
[ErasureCodeConstants.java|https://github.com/apache/hadoop/blob/03cfc852791c14fad39db4e5b14104a276c08e59/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/ErasureCodeConstants.java#L33])
instead.
> SHOW and DESCRIBE statements should display EC policies
> -------------------------------------------------------
>
> Key: IMPALA-9487
> URL: https://issues.apache.org/jira/browse/IMPALA-9487
> Project: IMPALA
> Issue Type: Sub-task
> Components: Frontend
> Reporter: Sahil Takiar
> Assignee: Michael Smith
> Priority: Major
> Labels: observability
>
> Since EC policies can be set per-file, the {{show files}} command should
> display if a file is an EC file, and what the EC policy is.
> EC policies can be set on a table level directory, so it would be useful if
> 'describe extended [table-name]' indicated if the table had an EC policy set
> or not.
> For partitioned tables, {{show partitions}} should list out the EC policy of
> each partition directory (we already do something similar for HDFS cacheing).
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