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java.net.ConnectException: Connection refused	at java.net.PlainSocketImpl.socketConnect(Native Method)	at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)	at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213)	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)	at java.net.Socket.connect(Socket.java:529)	at org.apache.thrift.transport.TSocket.open(TSocket.java:180)	at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.open(HiveMetaStoreClient.java:277)	at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.(HiveMetaStoreClient.java:163)	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(NativeMethod)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)	at org.apache.hadoop.hive.metastore.MetaStoreUtils.newInstance(MetaStoreUtils.java:1082)	at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.(RetryingMetaStoreClient.java:51)	at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:61)	at org.apache.hadoop.hive.ql.metadata.Hive.createMetaStoreClient(Hive.java:2140)	at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:2151)	at org.apache.hadoop.hive.ql.metadata.Hive.getDatabase(Hive.java:1114)	at org.apache.hadoop.hive.ql.metadata.Hive.databaseExists(Hive.java:1103)	at org.apache.hadoop.hive.ql.exec.DDLTask.showTables(DDLTask.java:2206)	at org.apache.hadoop.hive.ql.exec.DDLTask.execute(DDLTask.java:334)	at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:138)	at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:57)	at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1352)	at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1138)	at org.apache.hadoop.hive.ql.Driver.run(Driver.java:951)	at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:259)	at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:216)	at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:412)	at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:755)	at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:613)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.apache.hadoop.util.RunJar.main(RunJar.java:208)