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Posted to issues@drill.apache.org by "Abhishek Girish (JIRA)" <ji...@apache.org> on 2015/01/09 02:44:34 UTC
[jira] [Created] (DRILL-1969) Error message thrown while querying
Hive Views from Drill must be improved
Abhishek Girish created DRILL-1969:
--------------------------------------
Summary: Error message thrown while querying Hive Views from Drill must be improved
Key: DRILL-1969
URL: https://issues.apache.org/jira/browse/DRILL-1969
Project: Apache Drill
Issue Type: Improvement
Components: Storage - Hive
Reporter: Abhishek Girish
Assignee: Venki Korukanti
Currently querying Hive views is not supported via Drill. This may however not be clear to an end user as both hive tables and hive views can be listed via Drill.
> use hive;
+------------+------------+
| ok | summary |
+------------+------------+
| true | Default schema changed to 'hive' |
+------------+------------+
> show tables;
+--------------+------------+
| TABLE_SCHEMA | TABLE_NAME |
+--------------+------------+
| hive.default | tab1_view |
| hive.default | tab1 |
+--------------+------------+
Querying a hive table is successful. However querying a hive view fails with an error which isn't informative.
> select * from tab1;
+------------+------------+
| a1 | a2 |
+------------+------------+
| 1 | ABC |
+------------+------------+
> select * from tab1_view;
Query failed: Query failed: Unexpected exception during fragment initialization: Internal error: Error while applying rule DrillPushProjIntoScan, args [rel#5828:ProjectRel.NONE.ANY([]).[](child=rel#5827:Subset#0.ENUMERABLE.ANY([]).[],a1=$0,a2=$1), rel#5822:EnumerableTableAccessRel.ENUMERABLE.ANY([]).[](table=[hive, tab1_view])]
Error: exception while executing query: Failure while executing query. (state=,code=0)
The error message thrown at the console must be improved such as to indicate that at present querying Hive Views is not supported.
LOG:
2015-01-08 17:38:41,009 [2b50cede-b757-f6c3-6c5f-56f524796772:foreman] ERROR o.a.drill.exec.work.foreman.Foreman - Error 3efe02b8-19cd-4e42-a89c-190488762993: Query failed: Unexpected exception during fragment initialization: Internal error: Error while applying rule DrillPushProjIntoScan, args [rel#5828:ProjectRel.NONE.ANY([]).[](child=rel#5827:Subset#0.ENUMERABLE.ANY([]).[],a1=$0,a2=$1), rel#5822:EnumerableTableAccessRel.ENUMERABLE.ANY([]).[](table=[hive, tab1_view])]
org.apache.drill.exec.work.foreman.ForemanException: Unexpected exception during fragment initialization: Internal error: Error while applying rule DrillPushProjIntoScan, args [rel#5828:ProjectRel.NONE.ANY([]).[](child=rel#5827:Subset#0.ENUMERABLE.ANY([]).[],a1=$0,a2=$1), rel#5822:EnumerableTableAccessRel.ENUMERABLE.ANY([]).[](table=[hive, tab1_view])]
at org.apache.drill.exec.work.foreman.Foreman.run(Foreman.java:194) [drill-java-exec-0.7.0-r2-SNAPSHOT-rebuffed.jar:0.7.0-r2-SNAPSHOT]
at org.apache.drill.exec.work.WorkManager$RunnableWrapper.run(WorkManager.java:254) [drill-java-exec-0.7.0-r2-SNAPSHOT-rebuffed.jar:0.7.0-r2-SNAPSHOT]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_65]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_65]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_65]
Caused by: java.lang.AssertionError: Internal error: Error while applying rule DrillPushProjIntoScan, args [rel#5828:ProjectRel.NONE.ANY([]).[](child=rel#5827:Subset#0.ENUMERABLE.ANY([]).[],a1=$0,a2=$1), rel#5822:EnumerableTableAccessRel.ENUMERABLE.ANY([]).[](table=[hive, tab1_view])]
at org.eigenbase.util.Util.newInternal(Util.java:750) ~[optiq-core-0.9-drill-r12.jar:na]
at org.eigenbase.relopt.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:246) ~[optiq-core-0.9-drill-r12.jar:na]
at org.eigenbase.relopt.volcano.VolcanoPlanner.findBestExp(VolcanoPlanner.java:661) ~[optiq-core-0.9-drill-r12.jar:na]
at net.hydromatic.optiq.tools.Programs$RuleSetProgram.run(Programs.java:165) ~[optiq-core-0.9-drill-r12.jar:na]
at net.hydromatic.optiq.prepare.PlannerImpl.transform(PlannerImpl.java:276) ~[optiq-core-0.9-drill-r12.jar:na]
at org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.convertToDrel(DefaultSqlHandler.java:155) ~[drill-java-exec-0.7.0-r2-SNAPSHOT-rebuffed.jar:0.7.0-r2-SNAPSHOT]
at org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.getPlan(DefaultSqlHandler.java:134) ~[drill-java-exec-0.7.0-r2-SNAPSHOT-rebuffed.jar:0.7.0-r2-SNAPSHOT]
at org.apache.drill.exec.planner.sql.DrillSqlWorker.getPlan(DrillSqlWorker.java:145) ~[drill-java-exec-0.7.0-r2-SNAPSHOT-rebuffed.jar:0.7.0-r2-SNAPSHOT]
at org.apache.drill.exec.work.foreman.Foreman.runSQL(Foreman.java:507) [drill-java-exec-0.7.0-r2-SNAPSHOT-rebuffed.jar:0.7.0-r2-SNAPSHOT]
at org.apache.drill.exec.work.foreman.Foreman.run(Foreman.java:185) [drill-java-exec-0.7.0-r2-SNAPSHOT-rebuffed.jar:0.7.0-r2-SNAPSHOT]
... 4 common frames omitted
Caused by: java.lang.UnsupportedOperationException: Querying Hive views from Drill is not supported in current version.
at org.apache.drill.exec.store.hive.HiveStoragePlugin.getPhysicalScan(HiveStoragePlugin.java:74) ~[drill-storage-hive-core-0.7.0-r2-SNAPSHOT.jar:0.7.0-r2-SNAPSHOT]
at org.apache.drill.exec.store.hive.HiveStoragePlugin.getPhysicalScan(HiveStoragePlugin.java:41) ~[drill-storage-hive-core-0.7.0-r2-SNAPSHOT.jar:0.7.0-r2-SNAPSHOT]
at org.apache.drill.exec.store.AbstractStoragePlugin.getPhysicalScan(AbstractStoragePlugin.java:53) ~[drill-java-exec-0.7.0-r2-SNAPSHOT-rebuffed.jar:0.7.0-r2-SNAPSHOT]
at org.apache.drill.exec.planner.logical.DrillTable.getGroupScan(DrillTable.java:53) ~[drill-java-exec-0.7.0-r2-SNAPSHOT-rebuffed.jar:0.7.0-r2-SNAPSHOT]
at org.apache.drill.exec.planner.logical.DrillPushProjIntoScan.onMatch(DrillPushProjIntoScan.java:56) ~[drill-java-exec-0.7.0-r2-SNAPSHOT-rebuffed.jar:0.7.0-r2-SNAPSHOT]
at org.eigenbase.relopt.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:223) ~[optiq-core-0.9-drill-r12.jar:na]
... 12 common frames omitted
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