[ https://issues.apache.org/jira/browse/DRILL-4185?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vitalii Diravka reassigned DRILL-4185: -------------------------------------- Assignee: Vitalii Diravka > UNION ALL involving empty directory on any side of union all results in > Failed query > ------------------------------------------------------------------------------------ > > Key: DRILL-4185 > URL: https://issues.apache.org/jira/browse/DRILL-4185 > Project: Apache Drill > Issue Type: Bug > Components: Execution - Relational Operators > Affects Versions: 1.4.0 > Reporter: Khurram Faraaz > Assignee: Vitalii Diravka > > UNION ALL query that involves an empty directory on either side of UNION ALL > operator results in FAILED query. We should return the results for the > non-empty side (input) of UNION ALL. > Note that empty_DIR is an empty directory, the directory exists, but it has > no files in it. > Drill 1.4 git.commit.id=b9068117 > 4 node cluster on CentOS > {code} > 0: jdbc:drill:schema=dfs.tmp> select columns[0] from empty_DIR UNION ALL > select cast(columns[0] as int) c1 from `testWindow.csv`; > Error: VALIDATION ERROR: From line 1, column 24 to line 1, column 32: Table > 'empty_DIR' not found > [Error Id: 5c024786-6703-4107-8a4a-16c96097be08 on centos-01.qa.lab:31010] > (state=,code=0) > 0: jdbc:drill:schema=dfs.tmp> select cast(columns[0] as int) c1 from > `testWindow.csv` UNION ALL select columns[0] from empty_DIR; > Error: VALIDATION ERROR: From line 1, column 90 to line 1, column 98: Table > 'empty_DIR' not found > [Error Id: 58c98bc4-99df-425c-aa07-c8c5faec4748 on centos-01.qa.lab:31010] > (state=,code=0) > {code} -- This message was sent by Atlassian JIRA (v6.4.14#64029)