Re: How to write stream data to other Hadoop Cluster by StreamingFileSink

Tue, 08 Oct 2019 23:11:40 -0700 

Hi,Yang :
thank you very much for your reply.


I had add the configurations on my hadoop cluster client , both hdfs-site.xml 
and core-site.xml are configured, the client can read mycluster1 and mycluter2, 
but when I submit the flink job to yarn cluster , the hadoop client 
configurations is invalid, I read the source code ,it will give priority to the 
configuration of the hadoop cluster.

                           
              
                    
 
     
 
     On 10/9/2019 10:57??Yang Wang<danrtsey...@gmail.com&gt; wrote?? 
 
  Hi Jun Zhang,

I think you could add two hdfs cluster configurations in your hdfs-site.xml.
The following config keys need to be added. Then you could use both two hdfs 
clusters in your flink job.
dfs.nameservices: mycluster1,mycluster2


dfs.ha.namenodes.mycluster1: nn1,nn2

dfs.client.failover.proxy.provider.mycluster1: 
org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider

dfs.namenode.rpc-address.mycluster1.nn1: nn1-address

dfs.namenode.rpc-address.mycluster1.nn2: nn1-address



dfs.ha.namenodes.mycluster2: nn1,nn2

dfs.client.failover.proxy.provider.mycluster2: 
org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider

dfs.namenode.rpc-address.mycluster2.nn1: nn1-address

dfs.namenode.rpc-address.mycluster2.nn2: nn1-address





Best,
Yang


Jun Zhang <825875...@qq.com&gt; ??2019??10??5?????? ????1:45??????

           
     

Hi,all:


I have 2 hadoop cluster (hdfs://mycluster1 and hdfs://mycluster2),both of them 
configured the HA,
I have a job ,read from streaming data from kafka, and write it to hdfs by 
StreamingFileSink,now I deployed my job on mycluster1 (flink on yarn),and I 
want to write the data to mycluster2 , how did I add the configure ? If I write 
hdfs://mycluster2/tmp/abc &nbsp; on the path of the StreamingFileSink directly, 
it will report that mycluster2 could not be found.




I look at the source code of 
org.apache.flink.runtime.fs.hdfs.HadoopFsFactory#create. When flink loads 
core-site.xml and hdfs-site.xml, it is first loaded from hadoopConfig, then 
flinkConfig, and finally from classpath. I see flinkConfig does not seem to be 
empty, and the code is loaded by flinkConfig, finally loaded from HADOOP_HOME, 
so the core-site.xml and hdfs-site.xml of mycluster1 cluster will not contain 
the &nbsp;information of mycluster2. Cause mycluster2 not found.




thanks

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