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From Flavio Pompermaier <pomperma...@okkam.it>
Subject Re: writeAsCsv on HDFS
Date Thu, 25 Jun 2015 13:17:03 GMT
Do I have to put the hadoop conf file on each task manager or just on the
job-manager?

On Thu, Jun 25, 2015 at 3:12 PM, Chiwan Park <chiwanpark@apache.org> wrote:

> It represents the folder containing the hadoop config files. :)
>
> Regards,
> Chiwan Park
>
>
> > On Jun 25, 2015, at 10:07 PM, Flavio Pompermaier <pompermaier@okkam.it>
> wrote:
> >
> > fs.hdfs.hadoopconf represents the folder containing the hadoop config
> files (*-site.xml) or just one specific hadoop config file (e.g.
> core-site.xml or the hdfs-site.xml)?
> >
> > On Thu, Jun 25, 2015 at 3:04 PM, Robert Metzger <rmetzger@apache.org>
> wrote:
> > Hi Flavio,
> >
> > there is a file called "conf/flink-conf.yaml"
> > Add a new line in the file with the following contents:
> >
> > fs.hdfs.hadoopconf: /path/to/your/hadoop/config
> >
> > This should fix the problem.
> > Flink can not load the configuration file from the jar containing the
> user code, because the file system is initialized independent of the the
> job. So there is (currently) no way of initializing the file system using
> the user code classloader.
> >
> > What you can do is making the configuration file available to Flink's
> system classloader. For example by putting your user jar into the lib/
> folder of Flink. You can also add the path to the Hadoop configuration
> files into the CLASSPATH of Flink (but you need to do that on all machines).
> >
> > I think the easiest approach is using Flink's configuration file.
> >
> >
> > On Thu, Jun 25, 2015 at 2:59 PM, Flavio Pompermaier <
> pompermaier@okkam.it> wrote:
> > Could you describe it better with an example please? Why Flink doesn't
> load automatically the properties of the hadoop conf files within the jar?
> >
> > On Thu, Jun 25, 2015 at 2:55 PM, Robert Metzger <rmetzger@apache.org>
> wrote:
> > Hi,
> >
> > Flink is not loading the Hadoop configuration from the classloader. You
> have to specify the path to the Hadoop configuration in the flink
> configuration "fs.hdfs.hadoopconf"
> >
> > On Thu, Jun 25, 2015 at 2:50 PM, Flavio Pompermaier <
> pompermaier@okkam.it> wrote:
> > Hi to all,
> > I'm experiencing some problem in writing a file as csv on HDFS with
> flink 0.9.0.
> > The code I use is
> >   myDataset.writeAsCsv(new Path("hdfs:///tmp", "myFile.csv").toString());
> >
> > If I run the job from Eclipse everything works fine but when I deploy
> the job on the cluster (cloudera 5.1.3) I obtain the following exception:
> >
> > Caused by: java.io.IOException: The given HDFS file URI
> (hdfs:///tmp/myFile.csv) did not describe the HDFS NameNode. The attempt to
> use a default HDFS configuration, as specified in the 'fs.hdfs.hdfsdefault'
> or 'fs.hdfs.hdfssite' config parameter failed due to the following problem:
> Either no default file system was registered, or the provided configuration
> contains no valid authority component (fs.default.name or fs.defaultFS)
> describing the (hdfs namenode) host and port.
> >       at
> org.apache.flink.runtime.fs.hdfs.HadoopFileSystem.initialize(HadoopFileSystem.java:291)
> >       at org.apache.flink.core.fs.FileSystem.get(FileSystem.java:258)
> >       at org.apache.flink.core.fs.Path.getFileSystem(Path.java:309)
> >       at
> org.apache.flink.api.common.io.FileOutputFormat.initializeGlobal(FileOutputFormat.java:273)
> >       at
> org.apache.flink.runtime.jobgraph.OutputFormatVertex.initializeOnMaster(OutputFormatVertex.java:84)
> >       at
> org.apache.flink.runtime.jobmanager.JobManager$$anonfun$org$apache$flink$runtime$jobmanager$JobManager$$submitJob$4.apply(JobManager.scala:520)
> >       ... 25 more
> >
> > The core-site.xml is present in the fat jar and contains the property
> >
> > <property>
> >     <name>fs.defaultFS</name>
> >     <value>hdfs://myServerX:8020</value>
> >   </property>
> >
> > I compiled flink with the following command:
> >
> >  mvn clean  install -Dhadoop.version=2.3.0-cdh5.1.3
> -Dhbase.version=0.98.1-cdh5.1.3 -Dhadoop.core.version=2.3.0-mr1-cdh5.1.3
> -DskipTests -Pvendor-repos
> >
> > How can I fix that?
> >
> > Best,
> > Flavio
> >
>
>

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