导数据中的网络引起的异常

最近由hive想应用数据库mysql和hbase导数据的时候，莫名的出现很多连接异常或者中断的情况，初步怀疑是开启并发过多占满网络带宽导致

导入mysql数据库

Lost connection to MySQL server at 'reading authorization packet', system error: 0

导入Hbase数据库时ssh连接中断

java.lang.NullPointerException
	at com.test.dpa.utils.ShellRunner.callRemoteShell(ShellRunner.java:77)
	at com.test.dpa.ShellTool.main(ShellTool.java:17)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.apache.oozie.action.hadoop.JavaMain.run(JavaMain.java:56)
	at org.apache.oozie.action.hadoop.LauncherMain.run(LauncherMain.java:47)
	at org.apache.oozie.action.hadoop.JavaMain.main(JavaMain.java:35)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.apache.oozie.action.hadoop.LauncherMapper.map(LauncherMapper.java:241)
	at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:54)
	at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:453)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343)
	at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:422)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
	at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:162)

ChannelCondition.EOF, current_cond=16 ,stdoutAvail=0, stderrAvail=0
ChannelCondition.STATE_CLOSED, current_cond=16
Channel Closed: The connection is being shutdown
The channel is closed.
Intercepting System.exit(1)