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https://issues.apache.org/jira/browse/IMPALA-9487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17647725#comment-17647725
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ASF subversion and git services commented on IMPALA-9487:
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Commit 8b83726b8e5577ffc6d423caf3a092ce37dd5778 in impala's branch
refs/heads/master from Michael Smith
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=8b83726b8 ]
IMPALA-9487: Add erasure coding policy to SHOW, DESCRIBE
Adds erasure coding policy to introspection commands SHOW FILES, SHOW
PARTITIONS, SHOW TABLE STATS, and DESCRIBE EXTENDED.
Remove `throws IOException` for methods that don't throw. Removes null
check for getSd because getStorageDescriptorInfo - which is called right
after getTableMetaDataInformation - uses it without checking for null.
Adds '$ERASURECODE_POLICY' for runtime test substitution. The test suite
replaces this with the current erasure code policy - from
HDFS_ERASURECODE_POLICY - or NONE to match expected output.
Testing:
- ran backend, end-to-end, and custom cluster tests with erasure coding
- ran backend, end-to-end, and custom cluster tests with exhaustive
strategy
Change-Id: Idd95f2d18b3980581788c92993b6d2f53504b5e0
Reviewed-on: http://gerrit.cloudera.org:8080/19268
Reviewed-by: Michael Smith <[email protected]>
Tested-by: Michael Smith <[email protected]>
> 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
> Fix For: Impala 4.3.0
>
>
> 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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