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Posted to dev@drill.apache.org by "Khurram Faraaz (JIRA)" <ji...@apache.org> on 2015/09/11 00:31:46 UTC
[jira] [Created] (DRILL-3762) NPE : Query nested JSON data
Khurram Faraaz created DRILL-3762:
-------------------------------------
Summary: NPE : Query nested JSON data
Key: DRILL-3762
URL: https://issues.apache.org/jira/browse/DRILL-3762
Project: Apache Drill
Issue Type: Bug
Components: Client - JDBC
Affects Versions: 1.2.0
Environment: 4 node cluster CentOS
Reporter: Khurram Faraaz
Assignee: Daniel Barclay (Drill)
Fix For: 1.2.0
Drill master commit ID : 0686bc23
I am seeing an NPE when I try to query nested data. Interestingly there are no Exceptions written to either drillbit.log or drillbit.out, I had to set verbose mode to ON, on sqlline to see the stack trace.
{code}
0: jdbc:drill:schema=dfs.tmp> select * from `repro_data.json`;
+---------------------------------------------------------------------+
| meta |
+---------------------------------------------------------------------+
| {"view":{"columns":[{"cachedCounts":{"smallest":"hello world"}}]}} |
+---------------------------------------------------------------------+
1 row selected (2.401 seconds)
0: jdbc:drill:schema=dfs.tmp> select t.meta.view.columns from `repro_data.json` t;
+------------------------------------------------+
| EXPR$0 |
+------------------------------------------------+
| [{"cachedCounts":{"smallest":"hello world"}}] |
+------------------------------------------------+
1 row selected (0.347 seconds)
0: jdbc:drill:schema=dfs.tmp> select t.meta.view.columns[1] from `repro_data.json` t;
Error: Unexpected RuntimeException: java.lang.NullPointerException (state=,code=0)
0: jdbc:drill:schema=dfs.tmp> !verbose true
verbose: on
0: jdbc:drill:schema=dfs.tmp> select t.meta.view.columns[1] from `repro_data.json` t;
Error: Unexpected RuntimeException: java.lang.NullPointerException (state=,code=0)
java.sql.SQLException: Unexpected RuntimeException: java.lang.NullPointerException
at org.apache.drill.jdbc.impl.DrillCursor.nextRowInternally(DrillCursor.java:261)
at org.apache.drill.jdbc.impl.DrillCursor.loadInitialSchema(DrillCursor.java:290)
at org.apache.drill.jdbc.impl.DrillResultSetImpl.execute(DrillResultSetImpl.java:1359)
at org.apache.drill.jdbc.impl.DrillResultSetImpl.execute(DrillResultSetImpl.java:74)
at net.hydromatic.avatica.AvaticaConnection.executeQueryInternal(AvaticaConnection.java:404)
at net.hydromatic.avatica.AvaticaStatement.executeQueryInternal(AvaticaStatement.java:351)
at net.hydromatic.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:338)
at net.hydromatic.avatica.AvaticaStatement.execute(AvaticaStatement.java:69)
at org.apache.drill.jdbc.impl.DrillStatementImpl.execute(DrillStatementImpl.java:86)
at sqlline.Commands.execute(Commands.java:841)
at sqlline.Commands.sql(Commands.java:751)
at sqlline.SqlLine.dispatch(SqlLine.java:738)
at sqlline.SqlLine.begin(SqlLine.java:612)
at sqlline.SqlLine.start(SqlLine.java:366)
at sqlline.SqlLine.main(SqlLine.java:259)
Caused by: java.lang.NullPointerException
at org.apache.drill.exec.record.RecordBatchLoader.load(RecordBatchLoader.java:99)
at org.apache.drill.jdbc.impl.DrillCursor.nextRowInternally(DrillCursor.java:223)
... 14 more
{code}
Data used in the test, repo_data.json
{code}
{
"meta":{
"view":{
"columns":[{"cachedCounts":{ "smallest":"hello world"}}]
}
}
}
{code}
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