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https://issues.apache.org/jira/browse/DRILL-1773?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14731621#comment-14731621
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Daniel Barclay (Drill) commented on DRILL-1773:
-----------------------------------------------
The logging part of DRILL-1773 should be superseded by DRILL-3741 (documenting
how to configure logging).
> Issues when using JAVA code through Drill JDBC driver
> -----------------------------------------------------
>
> Key: DRILL-1773
> URL: https://issues.apache.org/jira/browse/DRILL-1773
> Project: Apache Drill
> Issue Type: Bug
> Components: Client - JDBC
> Affects Versions: 0.6.0, 0.7.0
> Environment: Tested on 0.6R3
> Reporter: Hao Zhu
> Assignee: Daniel Barclay (Drill)
> Fix For: 1.2.0
>
> Attachments: DrillHandler.patch, DrillJdbcExample.java
>
>
> When executing attached simple JAVA code through Drill JDBC driver(0..6 R3),
> the query got executed and returned the correct result, however there are 2
> issues:
> 1. It keeps printing DEBUG information.
> Is it default behavior or is there any way to disable DEBUG?
> eg:
> {code}
> 13:30:44.702 [Client-1] DEBUG i.n.u.i.JavassistTypeParameterMatcherGenerator
> - Generated:
> io.netty.util.internal.__matchers__.io.netty.buffer.ByteBufMatcher
> 13:30:44.706 [Client-1] DEBUG i.n.u.i.JavassistTypeParameterMatcherGenerator
> - Generated:
> io.netty.util.internal.__matchers__.org.apache.drill.exec.rpc.OutboundRpcMessageMatcher
> 13:30:44.708 [Client-1] DEBUG i.n.u.i.JavassistTypeParameterMatcherGenerator
> - Generated:
> io.netty.util.internal.__matchers__.org.apache.drill.exec.rpc.InboundRpcMessageMatcher
> 13:30:44.717 [Client-1] DEBUG io.netty.util.Recycler -
> -Dio.netty.recycler.maxCapacity.default: 262144
> {code}
> 2. After the query finished, it seems not close the connection and did not
> return to shell prompt.
> I have to manually issue "ctrl-C" to stop it.
> {code}
> 13:31:11.239 [main-SendThread(xx.xx.xx.xx:5181)] DEBUG
> org.apache.zookeeper.ClientCnxn - Got ping response for sessionid:
> 0x1497d1d0d040839 after 0ms
> 13:31:24.573 [main-SendThread(xx.xx.xx.xx:5181)] DEBUG
> org.apache.zookeeper.ClientCnxn - Got ping response for sessionid:
> 0x1497d1d0d040839 after 1ms
> 13:31:37.906 [main-SendThread(xx.xx.xx.xx:5181)] DEBUG
> org.apache.zookeeper.ClientCnxn - Got ping response for sessionid:
> 0x1497d1d0d040839 after 0ms
> ^CAdministrators-MacBook-Pro-40:xxx$
> {code}
> ========
> The DrillJdbcExample.java is attached.
> Command to run:
> {code}
> javac DrillJdbcExample.java
> java DrillJdbcExample
> {code}
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