Hadoop 备用NN RPC延迟问题_Hadoop_Hadoop2

Hadoop 备用NN RPC延迟问题

hadoop

Hadoop 备用NN RPC延迟问题,hadoop,hadoop2,Hadoop,Hadoop2,我目前面临的一个问题是，在我的secondary NameNode上不时会出现RPC延迟问题。该实例上的日志事件如下所示： The health test result for NAME_NODE_RPC_LATENCY has become bad: The moving average of the RPC latency is 6 second(s) over the previous 5 minute(s). The moving average of the queue time is

我目前面临的一个问题是，在我的secondary NameNode上不时会出现RPC延迟问题。该实例上的日志事件如下所示：

The health test result for NAME_NODE_RPC_LATENCY has become bad: The moving average of the RPC latency is 6 second(s) over the previous 5 minute(s). The moving average of the queue time is 0 second(s). The moving average of the processing time is 6 second(s). Critical threshold: 5 second(s). 
Time: Sep 25, 2015 5:52:02 AM

我们不时会看到这些RPC错误。我看了日志，没有发现任何不同

我检查了问题发生时的日志，没有发现任何异常

Call#0 Retry#0: org.apache.hadoop.ipc.StandbyException: Operation category READ is not supported in state standby

这通常是因为客户端不知道连接到何处，并且由于该节点处于备用状态，它会无缝连接到活动NN

我检查了RPC平均队列时间和处理时间，有一次我看到连接中出现突发，我们收到了警报，但另一次情况不好时，请求中没有突发

有什么建议吗？还有什么我可以检查的吗？

Call#0重试#0:org.apache.hadoop.ipc.StandbyException:由于存在错误，待机状态下不支持读取操作类别。
Call#0 Retry#0: org.apache.hadoop.ipc.StandbyException: Operation category READ is not supported in state standby is due to a BUG.

https://issues.apache.org/jira/browse/AMBARI-13373
on similar lines. 
If you have HA enabled:
Datanodes are trying to connect to standby namenode because you might have the standby namenode in your dfs.namenode.rpc-address check hdfs-site.xml.

Workaround: Remove this property because dfs.namenode.rpc-address.DEMOMASTER.nn1 and dfs.namenode.rpc-address.DEMOMASTER.nn1 will serve the purpose of dfs.namenode.rpc-address 

How to remove?

Use the  configs.sh utility on the Ambari Server to delete the extra property.

/var/lib/ambari-server/resources/scripts/configs.sh -u
<admin.user> -p
<admin.password> delete
<ambari.server>
<cluster.name> hdfs-site “dfs.namenode.rpc-address”

Where
admin.user and
admin.password are credentials for an Ambari Administrator,
ambari.server is the Ambari Server host and
cluster.name is the name of your cluster.

https://issues.apache.org/jira/browse/AMBARI-13373
在类似的线路上。
如果已启用HA：
Datanodes正在尝试连接到备用namenode，因为您的dfs.namenode.rpc-address检查hdfs-site.xml中可能有备用namenode。
解决方法：删除此属性，因为dfs.namenode.rpc-address.DEMOMASTER.nn1和dfs.namenode.rpc-address.DEMOMASTER.nn1将用于dfs.namenode.rpc-address
如何删除？
使用Ambari服务器上的configs.sh实用程序删除额外属性。
/var/lib/ambari服务器/resources/scripts/configs.sh-u
-p
删除
hdfs站点“dfs.namenode.rpc地址”
哪里
管理员和用户
admin.password是Ambari管理员的凭据，
ambari.server是ambari服务器主机和
cluster.name是群集的名称。