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From "Khurram Faraaz (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-1313) Create new "all text mode" for JSON
Date Tue, 15 Sep 2015 00:42:45 GMT

    [ https://issues.apache.org/jira/browse/DRILL-1313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14744583#comment-14744583
] 

Khurram Faraaz commented on DRILL-1313:
---------------------------------------

Verified on master commit ID: b525692e

{code}
0: jdbc:drill:schema=dfs.tmp> alter session set `store.json.all_text_mode`=true;
+-------+------------------------------------+
|  ok   |              summary               |
+-------+------------------------------------+
| true  | store.json.all_text_mode updated.  |
+-------+------------------------------------+
1 row selected (0.128 seconds)
{code}

> Create new "all text mode" for JSON
> -----------------------------------
>
>                 Key: DRILL-1313
>                 URL: https://issues.apache.org/jira/browse/DRILL-1313
>             Project: Apache Drill
>          Issue Type: New Feature
>            Reporter: Jason Altekruse
>            Assignee: DrillCommitter
>             Fix For: 0.5.0
>
>         Attachments: 0001-DRILL-1313-All-text-mode-for-json-reader.patch, 0001-DRILL-1313-All-text-mode-for-json-reader.patch
>
>
> Currently Drill fails on schema changes in JSON. Some of these are due to fundamental
limitations of the Drill record representation. Others are due to Drills lack of full support
for mutating schema. This can be solved temporarily by reading in all data as strings and
allowing users to use some combination of case statements and UDFs to appropriately handle
their own schema mutations.



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