You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@drill.apache.org by "Bohdan Kazydub (JIRA)" <ji...@apache.org> on 2019/02/07 08:31:00 UTC
[jira] [Assigned] (DRILL-6976) SchemaChangeException happens when
using split function in subquery if it returns empty result.
[ https://issues.apache.org/jira/browse/DRILL-6976?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Bohdan Kazydub reassigned DRILL-6976:
-------------------------------------
Assignee: Anton Gozhiy (was: Bohdan Kazydub)
> SchemaChangeException happens when using split function in subquery if it returns empty result.
> -----------------------------------------------------------------------------------------------
>
> Key: DRILL-6976
> URL: https://issues.apache.org/jira/browse/DRILL-6976
> Project: Apache Drill
> Issue Type: Bug
> Affects Versions: 1.15.0
> Reporter: Anton Gozhiy
> Assignee: Anton Gozhiy
> Priority: Major
> Fix For: 1.16.0
>
>
> *Query:*
> {code:sql}
> select substr(col, 2, 3)
> from (select split(n_comment, ' ') [3] col
> from cp.`tpch/nation.parquet`
> where n_nationkey = -1
> group by n_comment
> order by n_comment
> limit 5);
> {code}
> *Expected result:*
> {noformat}
> +---------+
> | EXPR$0 |
> +---------+
> +---------+
> {noformat}
> *Actual result:*
> {noformat}
> Error: SYSTEM ERROR: SchemaChangeException: Failure while trying to materialize incoming schema. Errors:
>
> Error in expression at index -1. Error: Missing function implementation: [castVARCHAR(NULL-OPTIONAL, BIGINT-REQUIRED)]. Full expression: --UNKNOWN EXPRESSION--..
> Fragment 0:0
> Please, refer to logs for more information.
> [Error Id: 86515d74-7b9c-4949-8ece-c9c17e00afc3 on userf87d-pc:31010]
> (org.apache.drill.exec.exception.SchemaChangeException) Failure while trying to materialize incoming schema. Errors:
>
> Error in expression at index -1. Error: Missing function implementation: [castVARCHAR(NULL-OPTIONAL, BIGINT-REQUIRED)]. Full expression: --UNKNOWN EXPRESSION--..
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.setupNewSchemaFromInput():498
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.setupNewSchema():583
> org.apache.drill.exec.record.AbstractUnaryRecordBatch.innerNext():101
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext():143
> org.apache.drill.exec.record.AbstractRecordBatch.next():186
> org.apache.drill.exec.physical.impl.BaseRootExec.next():104
> org.apache.drill.exec.physical.impl.ScreenCreator$ScreenRoot.innerNext():83
> org.apache.drill.exec.physical.impl.BaseRootExec.next():94
> org.apache.drill.exec.work.fragment.FragmentExecutor$1.run():297
> org.apache.drill.exec.work.fragment.FragmentExecutor$1.run():284
> java.security.AccessController.doPrivileged():-2
> javax.security.auth.Subject.doAs():422
> org.apache.hadoop.security.UserGroupInformation.doAs():1746
> org.apache.drill.exec.work.fragment.FragmentExecutor.run():284
> org.apache.drill.common.SelfCleaningRunnable.run():38
> java.util.concurrent.ThreadPoolExecutor.runWorker():1149
> java.util.concurrent.ThreadPoolExecutor$Worker.run():624
> java.lang.Thread.run():748 (state=,code=0)
> {noformat}
> *Note:* Filter "where n_nationkey = -1" doesn't return any rows. In case of " = 1", for example, the query will return result without error.
> *Workaround:* Use cast on the split function, like
> {code:sql}
> cast(split(n_comment, ' ') [3] as varchar)
> {code}
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)