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From "Jun Zhang" <825875...@qq.com>
Subject Re: How to write stream data to other Hadoop Cluster by StreamingFileSink
Date Wed, 09 Oct 2019 05:56:55 GMT
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.wy@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


Jun Zhang <825875991@qq.com&gt; 于2019年10月5日周六 下午1:45写道:



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.

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