GitHub user sujith71955 opened a pull request:
https://github.com/apache/spark/pull/21775
[SPARK-24812][SQL] Last Access Time in the table description is not valid
## What changes were proposed in this pull request?
Last Access Time will always displayed wrong date Wed Dec 31 15:59:59 PST
1969 when user run DESC FORMATTED table command
In hive its displayed as "UNKNOWN" which makes more sense than displaying
wrong date. seems to be a limitation as of now even from hive, better we can
follow the hive behavior unless the limitation has been resolved from hive.
## How was this patch tested?
UT has been added which makes sure that the wrong date "Wed Dec 31 15:59:59
PST 1969 "
shall not be added as value for the Last Access property
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/sujith71955/spark master_hive
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21775.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #21775
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commit 502bb924fdfd4a9593154ce72a128ca869c92fbe
Author: s71955 <sujithchacko.2010@...>
Date: 2018-07-16T07:40:53Z
[SPARK-24812][SQL] Last Access Time in the table description is not valid
## What changes were proposed in this pull request?
Last Access Time will always displayed wrong date Wed Dec 31 15:59:59 PST
1969 when user run DESC FORMATTED table command
In hive its displayed as "UNKNOWN" which makes more sense than displaying
wrong date. seems to be a limitation as of now, better we can follow the hive
behavior
unless the limitation has been resolved from hive.
## How was this patch tested?
UT has been added which makes sure that the wrong date "Wed Dec 31 15:59:59
PST 1969 "
shall not be added as value for the Last Access property
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