[ 
https://issues.apache.org/jira/browse/DRILL-492?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13963022#comment-13963022
 ] 

haolin commented on DRILL-492:
------------------------------

however, when I run  ./bin/sqlline -u jdbc:drill:schema=parquet-local -n admin 
-p admin, error comes up again.

root@mirage:~/compiled-drill# ./bin/sqlline -u jdbc:drill:schema=parquet-local 
-n admin -p admin
scan complete in 26ms
scan complete in 4608ms
22:15:08.267 [main] ERROR com.netflix.curator.ConnectionState - Connection 
timed out for connection string (localhost:2181) and timeout (5000) / elapsed 
(5037)
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = 
ConnectionLoss
        at 
com.netflix.curator.ConnectionState.getZooKeeper(ConnectionState.java:94) 
~[curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.CuratorZookeeperClient.getZooKeeper(CuratorZookeeperClient.java:106)
 [curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.CuratorFrameworkImpl.getZooKeeper(CuratorFrameworkImpl.java:393)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:184)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:173)
 [curator-framework-1.1.9.jar:na]
        at com.netflix.curator.RetryLoop.callWithRetry(RetryLoop.java:85) 
[curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.pathInForeground(GetChildrenBuilderImpl.java:169)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:161)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:36)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceDiscoveryImpl.getChildrenWatched(ServiceDiscoveryImpl.java:306)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceDiscoveryImpl.queryForInstances(ServiceDiscoveryImpl.java:276)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceCache.refresh(ServiceCache.java:193)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceCache.start(ServiceCache.java:116)
 [curator-x-discovery-1.1.9.jar:na]
        at 
org.apache.drill.exec.coord.ZKClusterCoordinator.start(ZKClusterCoordinator.java:89)
 
[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.exec.client.DrillClient.connect(DrillClient.java:116) 
[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillConnectionImpl.<init>(DrillConnectionImpl.java:85) 
[drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory$DrillJdbc41Connection.<init>(DrillJdbc41Factory.java:87)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory.newDrillConnection(DrillJdbc41Factory.java:56)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory.newDrillConnection(DrillJdbc41Factory.java:43)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillFactory.newConnection(DrillFactory.java:51) 
[drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
net.hydromatic.avatica.UnregisteredDriver.connect(UnregisteredDriver.java:121) 
[optiq-avatica-0.4.18.jar:na]
        at sqlline.SqlLine$DatabaseConnection.connect(SqlLine.java:4732) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$DatabaseConnection.getConnection(SqlLine.java:4786) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$Commands.connect(SqlLine.java:4026) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$Commands.connect(SqlLine.java:3935) 
[sqlline-1.1.6.jar:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
~[na:1.7.0_17]
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
~[na:1.7.0_17]
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 ~[na:1.7.0_17]
        at java.lang.reflect.Method.invoke(Method.java:601) ~[na:1.7.0_17]
        at sqlline.SqlLine$ReflectiveCommandHandler.execute(SqlLine.java:2884) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.dispatch(SqlLine.java:885) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.initArgs(SqlLine.java:693) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.begin(SqlLine.java:745) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.start(SqlLine.java:498) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.main(SqlLine.java:460) [sqlline-1.1.6.jar:na]
22:15:13.770 [main] ERROR com.netflix.curator.ConnectionState - Connection 
timed out for connection string (localhost:2181) and timeout (5000) / elapsed 
(10554)
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = 
ConnectionLoss
        at 
com.netflix.curator.ConnectionState.getZooKeeper(ConnectionState.java:94) 
~[curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.CuratorZookeeperClient.getZooKeeper(CuratorZookeeperClient.java:106)
 [curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.CuratorFrameworkImpl.getZooKeeper(CuratorFrameworkImpl.java:393)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:184)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:173)
 [curator-framework-1.1.9.jar:na]
        at com.netflix.curator.RetryLoop.callWithRetry(RetryLoop.java:85) 
[curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.pathInForeground(GetChildrenBuilderImpl.java:169)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:161)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:36)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceDiscoveryImpl.getChildrenWatched(ServiceDiscoveryImpl.java:306)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceDiscoveryImpl.queryForInstances(ServiceDiscoveryImpl.java:276)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceCache.refresh(ServiceCache.java:193)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceCache.start(ServiceCache.java:116)
 [curator-x-discovery-1.1.9.jar:na]
        at 
org.apache.drill.exec.coord.ZKClusterCoordinator.start(ZKClusterCoordinator.java:89)
 
[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.exec.client.DrillClient.connect(DrillClient.java:116) 
[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillConnectionImpl.<init>(DrillConnectionImpl.java:85) 
[drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory$DrillJdbc41Connection.<init>(DrillJdbc41Factory.java:87)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory.newDrillConnection(DrillJdbc41Factory.java:56)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory.newDrillConnection(DrillJdbc41Factory.java:43)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillFactory.newConnection(DrillFactory.java:51) 
[drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
net.hydromatic.avatica.UnregisteredDriver.connect(UnregisteredDriver.java:121) 
[optiq-avatica-0.4.18.jar:na]
        at sqlline.SqlLine$DatabaseConnection.connect(SqlLine.java:4732) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$DatabaseConnection.getConnection(SqlLine.java:4786) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$Commands.connect(SqlLine.java:4026) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$Commands.connect(SqlLine.java:3935) 
[sqlline-1.1.6.jar:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
~[na:1.7.0_17]
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
~[na:1.7.0_17]
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 ~[na:1.7.0_17]
        at java.lang.reflect.Method.invoke(Method.java:601) ~[na:1.7.0_17]
        at sqlline.SqlLine$ReflectiveCommandHandler.execute(SqlLine.java:2884) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.dispatch(SqlLine.java:885) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.initArgs(SqlLine.java:693) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.begin(SqlLine.java:745) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.start(SqlLine.java:498) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.main(SqlLine.java:460) [sqlline-1.1.6.jar:na]
22:15:19.272 [main] ERROR com.netflix.curator.ConnectionState - Connection 
timed out for connection string (localhost:2181) and timeout (5000) / elapsed 
(16056)
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = 
ConnectionLoss
        at 
com.netflix.curator.ConnectionState.getZooKeeper(ConnectionState.java:94) 
~[curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.CuratorZookeeperClient.getZooKeeper(CuratorZookeeperClient.java:106)
 [curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.CuratorFrameworkImpl.getZooKeeper(CuratorFrameworkImpl.java:393)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:184)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:173)
 [curator-framework-1.1.9.jar:na]
        at com.netflix.curator.RetryLoop.callWithRetry(RetryLoop.java:85) 
[curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.pathInForeground(GetChildrenBuilderImpl.java:169)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:161)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:36)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceDiscoveryImpl.getChildrenWatched(ServiceDiscoveryImpl.java:306)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceDiscoveryImpl.queryForInstances(ServiceDiscoveryImpl.java:276)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceCache.refresh(ServiceCache.java:193)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceCache.start(ServiceCache.java:116)
 [curator-x-discovery-1.1.9.jar:na]
        at 
org.apache.drill.exec.coord.ZKClusterCoordinator.start(ZKClusterCoordinator.java:89)
 
[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.exec.client.DrillClient.connect(DrillClient.java:116) 
[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillConnectionImpl.<init>(DrillConnectionImpl.java:85) 
[drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory$DrillJdbc41Connection.<init>(DrillJdbc41Factory.java:87)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory.newDrillConnection(DrillJdbc41Factory.java:56)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory.newDrillConnection(DrillJdbc41Factory.java:43)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillFactory.newConnection(DrillFactory.java:51) 
[drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
net.hydromatic.avatica.UnregisteredDriver.connect(UnregisteredDriver.java:121) 
[optiq-avatica-0.4.18.jar:na]
        at sqlline.SqlLine$DatabaseConnection.connect(SqlLine.java:4732) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$DatabaseConnection.getConnection(SqlLine.java:4786) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$Commands.connect(SqlLine.java:4026) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$Commands.connect(SqlLine.java:3935) 
[sqlline-1.1.6.jar:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
~[na:1.7.0_17]
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
~[na:1.7.0_17]
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 ~[na:1.7.0_17]
        at java.lang.reflect.Method.invoke(Method.java:601) ~[na:1.7.0_17]
        at sqlline.SqlLine$ReflectiveCommandHandler.execute(SqlLine.java:2884) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.dispatch(SqlLine.java:885) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.initArgs(SqlLine.java:693) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.begin(SqlLine.java:745) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.start(SqlLine.java:498) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.main(SqlLine.java:460) [sqlline-1.1.6.jar:na]
22:15:24.776 [main] ERROR com.netflix.curator.ConnectionState - Connection 
timed out for connection string (localhost:2181) and timeout (5000) / elapsed 
(21560)
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = 
ConnectionLoss
        at 
com.netflix.curator.ConnectionState.getZooKeeper(ConnectionState.java:94) 
~[curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.CuratorZookeeperClient.getZooKeeper(CuratorZookeeperClient.java:106)
 [curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.CuratorFrameworkImpl.getZooKeeper(CuratorFrameworkImpl.java:393)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:184)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:173)
 [curator-framework-1.1.9.jar:na]
        at com.netflix.curator.RetryLoop.callWithRetry(RetryLoop.java:85) 
[curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.pathInForeground(GetChildrenBuilderImpl.java:169)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:161)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:36)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceDiscoveryImpl.getChildrenWatched(ServiceDiscoveryImpl.java:306)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceDiscoveryImpl.queryForInstances(ServiceDiscoveryImpl.java:276)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceCache.refresh(ServiceCache.java:193)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceCache.start(ServiceCache.java:116)
 [curator-x-discovery-1.1.9.jar:na]
        at 
org.apache.drill.exec.coord.ZKClusterCoordinator.start(ZKClusterCoordinator.java:89)
 
[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.exec.client.DrillClient.connect(DrillClient.java:116) 
[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillConnectionImpl.<init>(DrillConnectionImpl.java:85) 
[drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory$DrillJdbc41Connection.<init>(DrillJdbc41Factory.java:87)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory.newDrillConnection(DrillJdbc41Factory.java:56)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory.newDrillConnection(DrillJdbc41Factory.java:43)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillFactory.newConnection(DrillFactory.java:51) 
[drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
net.hydromatic.avatica.UnregisteredDriver.connect(UnregisteredDriver.java:121) 
[optiq-avatica-0.4.18.jar:na]
        at sqlline.SqlLine$DatabaseConnection.connect(SqlLine.java:4732) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$DatabaseConnection.getConnection(SqlLine.java:4786) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$Commands.connect(SqlLine.java:4026) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$Commands.connect(SqlLine.java:3935) 
[sqlline-1.1.6.jar:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
~[na:1.7.0_17]
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
~[na:1.7.0_17]
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 ~[na:1.7.0_17]
        at java.lang.reflect.Method.invoke(Method.java:601) ~[na:1.7.0_17]
        at sqlline.SqlLine$ReflectiveCommandHandler.execute(SqlLine.java:2884) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.dispatch(SqlLine.java:885) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.initArgs(SqlLine.java:693) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.begin(SqlLine.java:745) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.start(SqlLine.java:498) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.main(SqlLine.java:460) [sqlline-1.1.6.jar:na]
22:15:30.278 [main] ERROR com.netflix.curator.ConnectionState - Connection 
timed out for connection string (localhost:2181) and timeout (5000) / elapsed 
(27062)
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = 
ConnectionLoss
        at 
com.netflix.curator.ConnectionState.getZooKeeper(ConnectionState.java:94) 
~[curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.CuratorZookeeperClient.getZooKeeper(CuratorZookeeperClient.java:106)
 [curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.CuratorFrameworkImpl.getZooKeeper(CuratorFrameworkImpl.java:393)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:184)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:173)
 [curator-framework-1.1.9.jar:na]
        at com.netflix.curator.RetryLoop.callWithRetry(RetryLoop.java:85) 
[curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.pathInForeground(GetChildrenBuilderImpl.java:169)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:161)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:36)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceDiscoveryImpl.getChildrenWatched(ServiceDiscoveryImpl.java:306)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceDiscoveryImpl.queryForInstances(ServiceDiscoveryImpl.java:276)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceCache.refresh(ServiceCache.java:193)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceCache.start(ServiceCache.java:116)
 [curator-x-discovery-1.1.9.jar:na]
        at 
org.apache.drill.exec.coord.ZKClusterCoordinator.start(ZKClusterCoordinator.java:89)
 
[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.exec.client.DrillClient.connect(DrillClient.java:116) 
[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillConnectionImpl.<init>(DrillConnectionImpl.java:85) 
[drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory$DrillJdbc41Connection.<init>(DrillJdbc41Factory.java:87)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory.newDrillConnection(DrillJdbc41Factory.java:56)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory.newDrillConnection(DrillJdbc41Factory.java:43)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillFactory.newConnection(DrillFactory.java:51) 
[drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
net.hydromatic.avatica.UnregisteredDriver.connect(UnregisteredDriver.java:121) 
[optiq-avatica-0.4.18.jar:na]
        at sqlline.SqlLine$DatabaseConnection.connect(SqlLine.java:4732) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$DatabaseConnection.getConnection(SqlLine.java:4786) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$Commands.connect(SqlLine.java:4026) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$Commands.connect(SqlLine.java:3935) 
[sqlline-1.1.6.jar:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
~[na:1.7.0_17]
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
~[na:1.7.0_17]
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 ~[na:1.7.0_17]
        at java.lang.reflect.Method.invoke(Method.java:601) ~[na:1.7.0_17]
        at sqlline.SqlLine$ReflectiveCommandHandler.execute(SqlLine.java:2884) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.dispatch(SqlLine.java:885) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.initArgs(SqlLine.java:693) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.begin(SqlLine.java:745) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.start(SqlLine.java:498) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.main(SqlLine.java:460) [sqlline-1.1.6.jar:na]
22:15:35.782 [main] ERROR com.netflix.curator.ConnectionState - Connection 
timed out for connection string (localhost:2181) and timeout (5000) / elapsed 
(32566)
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = 
ConnectionLoss
        at 
com.netflix.curator.ConnectionState.getZooKeeper(ConnectionState.java:94) 
~[curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.CuratorZookeeperClient.getZooKeeper(CuratorZookeeperClient.java:106)
 [curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.CuratorFrameworkImpl.getZooKeeper(CuratorFrameworkImpl.java:393)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:184)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:173)
 [curator-framework-1.1.9.jar:na]
        at com.netflix.curator.RetryLoop.callWithRetry(RetryLoop.java:85) 
[curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.pathInForeground(GetChildrenBuilderImpl.java:169)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:161)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:36)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceDiscoveryImpl.getChildrenWatched(ServiceDiscoveryImpl.java:306)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceDiscoveryImpl.queryForInstances(ServiceDiscoveryImpl.java:276)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceCache.refresh(ServiceCache.java:193)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceCache.start(ServiceCache.java:116)
 [curator-x-discovery-1.1.9.jar:na]
        at 
org.apache.drill.exec.coord.ZKClusterCoordinator.start(ZKClusterCoordinator.java:89)
 
[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.exec.client.DrillClient.connect(DrillClient.java:116) 
[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillConnectionImpl.<init>(DrillConnectionImpl.java:85) 
[drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory$DrillJdbc41Connection.<init>(DrillJdbc41Factory.java:87)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory.newDrillConnection(DrillJdbc41Factory.java:56)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory.newDrillConnection(DrillJdbc41Factory.java:43)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillFactory.newConnection(DrillFactory.java:51) 
[drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
net.hydromatic.avatica.UnregisteredDriver.connect(UnregisteredDriver.java:121) 
[optiq-avatica-0.4.18.jar:na]
        at sqlline.SqlLine$DatabaseConnection.connect(SqlLine.java:4732) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$DatabaseConnection.getConnection(SqlLine.java:4786) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$Commands.connect(SqlLine.java:4026) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$Commands.connect(SqlLine.java:3935) 
[sqlline-1.1.6.jar:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
~[na:1.7.0_17]
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
~[na:1.7.0_17]
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 ~[na:1.7.0_17]
        at java.lang.reflect.Method.invoke(Method.java:601) ~[na:1.7.0_17]
        at sqlline.SqlLine$ReflectiveCommandHandler.execute(SqlLine.java:2884) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.dispatch(SqlLine.java:885) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.initArgs(SqlLine.java:693) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.begin(SqlLine.java:745) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.start(SqlLine.java:498) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.main(SqlLine.java:460) [sqlline-1.1.6.jar:na]
22:15:41.285 [main] ERROR com.netflix.curator.ConnectionState - Connection 
timed out for connection string (localhost:2181) and timeout (5000) / elapsed 
(38068)
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = 
ConnectionLoss
        at 
com.netflix.curator.ConnectionState.getZooKeeper(ConnectionState.java:94) 
~[curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.CuratorZookeeperClient.getZooKeeper(CuratorZookeeperClient.java:106)
 [curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.CuratorFrameworkImpl.getZooKeeper(CuratorFrameworkImpl.java:393)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:184)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:173)
 [curator-framework-1.1.9.jar:na]
        at com.netflix.curator.RetryLoop.callWithRetry(RetryLoop.java:85) 
[curator-client-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.pathInForeground(GetChildrenBuilderImpl.java:169)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:161)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:36)
 [curator-framework-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceDiscoveryImpl.getChildrenWatched(ServiceDiscoveryImpl.java:306)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceDiscoveryImpl.queryForInstances(ServiceDiscoveryImpl.java:276)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceCache.refresh(ServiceCache.java:193)
 [curator-x-discovery-1.1.9.jar:na]
        at 
com.netflix.curator.x.discovery.details.ServiceCache.start(ServiceCache.java:116)
 [curator-x-discovery-1.1.9.jar:na]
        at 
org.apache.drill.exec.coord.ZKClusterCoordinator.start(ZKClusterCoordinator.java:89)
 
[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.exec.client.DrillClient.connect(DrillClient.java:116) 
[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillConnectionImpl.<init>(DrillConnectionImpl.java:85) 
[drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory$DrillJdbc41Connection.<init>(DrillJdbc41Factory.java:87)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory.newDrillConnection(DrillJdbc41Factory.java:56)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillJdbc41Factory.newDrillConnection(DrillJdbc41Factory.java:43)
 [drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
org.apache.drill.jdbc.DrillFactory.newConnection(DrillFactory.java:51) 
[drill-sqlparser-1.0.0-m2-incubating-SNAPSHOT.jar:1.0.0-m2-incubating-SNAPSHOT]
        at 
net.hydromatic.avatica.UnregisteredDriver.connect(UnregisteredDriver.java:121) 
[optiq-avatica-0.4.18.jar:na]
        at sqlline.SqlLine$DatabaseConnection.connect(SqlLine.java:4732) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$DatabaseConnection.getConnection(SqlLine.java:4786) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$Commands.connect(SqlLine.java:4026) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine$Commands.connect(SqlLine.java:3935) 
[sqlline-1.1.6.jar:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
~[na:1.7.0_17]
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
~[na:1.7.0_17]
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 ~[na:1.7.0_17]
        at java.lang.reflect.Method.invoke(Method.java:601) ~[na:1.7.0_17]
        at sqlline.SqlLine$ReflectiveCommandHandler.execute(SqlLine.java:2884) 
[sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.dispatch(SqlLine.java:885) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.initArgs(SqlLine.java:693) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.begin(SqlLine.java:745) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.start(SqlLine.java:498) [sqlline-1.1.6.jar:na]
        at sqlline.SqlLine.main(SqlLine.java:460) [sqlline-1.1.6.jar:na]

> mvn clean install -DskipTests: Failed to execute goal 
> com.googlecode.maven-download-plugin:download-maven-plugin:1.2.0-SNAPSHOT
> -------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DRILL-492
>                 URL: https://issues.apache.org/jira/browse/DRILL-492
>             Project: Apache Drill
>          Issue Type: Bug
>    Affects Versions: 1.0.0-milestone-1
>         Environment: root@mirage:~# cat /proc/version
> Linux version 3.2.0-24-generic (buildd@crested) (gcc version 4.6.3 
> (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #39-Ubuntu SMP Mon May 21 16:52:17 UTC 2012
>            Reporter: haolin
>
> I followed instructions referred to 
> https://cwiki.apache.org/confluence/display/DRILL/Compiling+Drill+from+source
> root@mirage:~# java -version
> java version "1.7.0_17"
> Java(TM) SE Runtime Environment (build 1.7.0_17-b02)
> Java HotSpot(TM) 64-Bit Server VM (build 23.7-b01, mixed mode)
> root@mirage:~# mvn -version
> Apache Maven 3.0.4
> Maven home: /usr/share/maven
> Java version: 1.6.0_27, vendor: Sun Microsystems Inc.
> Java home: /usr/lib/jvm/java-6-openjdk-amd64/jre
> Default locale: zh_CN, platform encoding: UTF-8
> OS name: "linux", version: "3.2.0-24-generic", arch: "amd64", family: "unix"
> root@mirage:/home/mirage/linhao/incubator-drill# mvn clean install 
> -DskipTests -X
> [INFO] 
> ------------------------------------------------------------------------
> [INFO] Reactor Summary:
> [INFO] 
> [INFO] Apache Drill Root POM ............................. SUCCESS [4.068s]
> [INFO] Drill Protocol .................................... FAILURE [0.731s]
> [INFO] Common (Logical Plan, Base expressions) ........... SKIPPED
> [INFO] contrib/Parent Pom ................................ SKIPPED
> [INFO] contrib/data/Parent Pom ........................... SKIPPED
> [INFO] contrib/data/tpch-sample-data ..................... SKIPPED
> [INFO] contrib/storage-hive .............................. SKIPPED
> [INFO] exec/Parent Pom ................................... SKIPPED
> [INFO] exec/Netty Little Endian Buffers .................. SKIPPED
> [INFO] exec/Java Execution Engine ........................ SKIPPED
> [INFO] contrib/hbase-storage-plugin ...................... SKIPPED
> [INFO] SQL Parser ........................................ SKIPPED
> [INFO] contrib/sqlline ................................... SKIPPED
> [INFO] Packaging and Distribution Assembly ............... SKIPPED
> [INFO] 
> ------------------------------------------------------------------------
> [INFO] BUILD FAILURE
> [INFO] 
> ------------------------------------------------------------------------
> [INFO] Total time: 5.504s
> [INFO] Finished at: Tue Apr 08 16:28:51 CST 2014
> [INFO] Final Memory: 23M/964M
> [INFO] 
> ------------------------------------------------------------------------
> [ERROR] Failed to execute goal 
> org.apache.maven.plugins:maven-compiler-plugin:3.0:compile (default-compile) 
> on project drill-protocol: Fatal error compiling: 无效的目标版本: 1.7 -> [Help 1]
> org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute 
> goal org.apache.maven.plugins:maven-compiler-plugin:3.0:compile 
> (default-compile) on project drill-protocol: Fatal error compiling
>       at 
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
>       at 
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
>       at 
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
>       at 
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
>       at 
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
>       at 
> org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
>       at 
> org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
>       at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
>       at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
>       at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
>       at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
>       at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:616)
>       at 
> org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
>       at 
> org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
>       at 
> org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
>       at 
> org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
> Caused by: org.apache.maven.plugin.MojoExecutionException: Fatal error 
> compiling
>       at 
> org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:695)
>       at 
> org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:118)
>       at 
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
>       at 
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
>       ... 19 more
> Caused by: org.codehaus.plexus.compiler.CompilerException: 无效的目标版本: 1.7
>       at 
> org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess(JavaxToolsCompiler.java:191)
>       at 
> org.codehaus.plexus.compiler.javac.JavacCompiler.performCompile(JavacCompiler.java:170)
>       at 
> org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:684)
>       ... 22 more
> Caused by: java.lang.IllegalArgumentException: 无效的目标版本: 1.7
>       at 
> com.sun.tools.javac.main.RecognizedOptions$GrumpyHelper.error(RecognizedOptions.java:88)
>       at 
> com.sun.tools.javac.main.RecognizedOptions$14.process(RecognizedOptions.java:393)
>       at com.sun.tools.javac.api.JavacTool.processOptions(JavacTool.java:259)
>       at com.sun.tools.javac.api.JavacTool.getTask(JavacTool.java:219)
>       at com.sun.tools.javac.api.JavacTool.getTask(JavacTool.java:66)
>       at 
> org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess(JavaxToolsCompiler.java:115)
>       ... 24 more
> [ERROR] 
> [ERROR] 
> [ERROR] For more information about the errors and possible solutions, please 
> read the following articles:
> [ERROR] [Help 1] 
> http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
> [ERROR] 
> [ERROR] After correcting the problems, you can resume the build with the 
> command
> [ERROR]   mvn <goals> -rf :drill-protocol



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