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Posted to dev@drill.apache.org by "Khurram Faraaz (JIRA)" <ji...@apache.org> on 2015/09/16 10:00:52 UTC
[jira] [Created] (DRILL-3789) Statement.cancel() does NOT CANCEL
query.
Khurram Faraaz created DRILL-3789:
-------------------------------------
Summary: Statement.cancel() does NOT CANCEL query.
Key: DRILL-3789
URL: https://issues.apache.org/jira/browse/DRILL-3789
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)
Statement.cancel() does not leave the canceled query in CANCELED state in the query profile on the Web UI, instead the query is marked as COMPLETED.
Another observation is that the statement in not closed after it is canceled.
{code}
public class TestCancelStmt {
public static void main(String s[]) {
try {
final String URL_STRING = "jdbc:drill:schema=dfs.tmp;drillbit=10.10.101.301";
Class.forName("org.apache.drill.jdbc.Driver").newInstance();
Connection conn = DriverManager.getConnection(URL_STRING,"","");
Statement stmt = conn.createStatement();
String query = "select * from FEWRWSPQQ_101";
ResultSet rs = stmt.executeQuery(query);
ResultSetMetaData rsmd = rs.getMetaData();
while (rs.next()) {
System.out.println(rs.getTimestamp("col5"));
stmt.cancel();
System.out.println("Statement.isClosed() : "+stmt.isClosed());
}
if (rs != null)
rs.close();
stmt.close();
conn.close();
} catch ( Exception e ) {
System.out.println(e.getMessage());
e.printStackTrace();
}
}
}
{code}
>From the log on the prompt, note that the query is marked as COMPLETED and the statement is not closed, see isClosed() : false
{code}
07:50:17.346 [Client-1] DEBUG o.a.d.e.rpc.user.QueryResultHandler - resultArrived: queryState: COMPLETED, queryId = part1: 3028354939821241671
part2: -4367740895230470400
07:50:17.346 [Client-1] DEBUG o.a.d.j.i.DrillResultSetImpl$ResultsListener - [#1] Received query completion: COMPLETED.
07:50:17.347 [Client-1] DEBUG o.a.drill.exec.rpc.user.UserClient - Sending response with Sender 475271556
2014-03-02 00:28:02.338
07:50:17.528 [main] DEBUG o.a.d.j.i.DrillResultSetImpl$ResultsListener - [#1] Query listener closing.
07:50:17.529 [main] DEBUG o.a.d.j.i.DrillResultSetImpl$ResultsListener - [#1] Query listener closing.
Statement.isClosed() : false
SQL statement execution canceled; ResultSet now closed.
org.apache.drill.jdbc.ExecutionCanceledSqlException: SQL statement execution canceled; ResultSet now closed.
at org.apache.drill.jdbc.impl.DrillResultSetImpl.checkNotClosed(DrillResultSetImpl.java:118)
at org.apache.drill.jdbc.impl.DrillResultSetImpl.next(DrillResultSetImpl.java:148)
at TestCancelStmt.main(TestCancelStmt.java:26)
{code}
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