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https://issues.apache.org/jira/browse/DRILL-3815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14904914#comment-14904914
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Jacques Nadeau commented on DRILL-3815:
---------------------------------------
Can you also confirm that you have no default input format set?
> unknown suffixes .not_json and .json_not treated differently (multi-file case)
> ------------------------------------------------------------------------------
>
> Key: DRILL-3815
> URL: https://issues.apache.org/jira/browse/DRILL-3815
> Project: Apache Drill
> Issue Type: Bug
> Components: Storage - Other
> Reporter: Daniel Barclay (Drill)
> Assignee: Jacques Nadeau
>
> In scanning a directory subtree used as a table, unknown filename extensions
> seem to be treated differently depending on whether they're similar to known
> file extensions. The behavior suggests that Drill checks whether a file name
> _contains_ an extension's string rather than _ending_ with it.
> For example, given these subtrees with almost identical leaf file names:
> {noformat}
> $ find /tmp/testext_xx_json/
> /tmp/testext_xx_json/
> /tmp/testext_xx_json/voter2.not_json
> /tmp/testext_xx_json/voter1.json
> $ find /tmp/testext_json_xx/
> /tmp/testext_json_xx/
> /tmp/testext_json_xx/voter1.json
> /tmp/testext_json_xx/voter2.json_not
> $
> {noformat}
> the results of trying to use them as tables differs:
> {noformat}
> 0: jdbc:drill:zk=local> SELECT * FROM `dfs.tmp`.`testext_xx_json`;
> Sep 21, 2015 11:41:50 AM
> org.apache.calcite.sql.validate.SqlValidatorException <init>
> ...
> Error: VALIDATION ERROR: From line 1, column 17 to line 1, column 25: Table
> 'dfs.tmp.testext_xx_json' not found
> [Error Id: 6fe41deb-0e39-43f6-beca-de27b39d276b on dev-linux2:31010]
> (state=,code=0)
> 0: jdbc:drill:zk=local> SELECT * FROM `dfs.tmp`.`testext_json_xx`;
> +-----------------------+
> | onecf |
> +-----------------------+
> | {"name":"someName1"} |
> | {"name":"someName2"} |
> +-----------------------+
> 2 rows selected (0.149 seconds)
> {noformat}
> (Other probing seems to indicate that there is also some sensitivity to
> whether the extension contains an underscore character.)
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