Hi, guys, When I using Hive Server 2 (0.12), sometimes I got a Derby exception. Anyone know why the Derby exception showing up in Hive Server 2 log (I am using MySQL as metastore)?
Thanks, Johnny 2014-05-17 02:25:42,344 INFO [main] org.apache.hadoop.hive.ql.exec.FileSinkOperator: 0 finished. closing... 2014-05-17 02:25:42,351 ERROR [main] org.apache.hadoop.hive.ql.stats.jdbc.JDBCStatsPublisher: Error during instantiating JDBC driver org.apache.derby.jdbc.EmbeddedDriver. java.lang.ClassNotFoundException: org.apache.derby.jdbc.EmbeddedDriver at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:423) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:356) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:188) at org.apache.hadoop.hive.ql.stats.jdbc.JDBCStatsPublisher.connect(JDBCStatsPublisher.java:68) at org.apache.hadoop.hive.ql.exec.FileSinkOperator.publishStats(FileSinkOperator.java:976) at org.apache.hadoop.hive.ql.exec.FileSinkOperator.closeOp(FileSinkOperator.java:873) at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:596) at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:613) at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:613) at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:613) at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.close(ExecMapper.java:207) at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:61) at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:429) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341) at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:162) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491) at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:157) 2014-05-17 02:25:42,351 ERROR [main] org.apache.hadoop.hive.ql.exec.FileSinkOperator: StatsPublishing error: cannot connect to database
