I think Jingsong is right. You miss a slash in your HDFS path.
Usually a HDFS path is like this "hdfs://nameservice/path/of/your/file".
And the nameservice could be omitted if you want to use the defaultFS
configured in the core-site.xml.
Best,
Yang
Jingsong Li <jingsongl...@gmail.com> 于2020年3月20日周五 上午10:09写道：
> Hi Nick,
>
> You can try "new Path("hdfs:///tmp/auditlog/")". There is one additional /
> after hdfs://, which is a protocol name.
>
> Best,
> Jingsong Lee
>
> On Fri, Mar 20, 2020 at 3:13 AM Nick Bendtner <buggi...@gmail.com> wrote:
>
>> Hi guys,
>> I am using flink version 1.7.2.
>> I am trying to write to hdfs sink from my flink job. I setup HADOOP_HOME.
>> Here is the debug log for this :
>>
>> 2020-03-19 18:59:34,316 DEBUG org.apache.flink.runtime.util.HadoopUtils
>> - Cannot find hdfs-default configuration-file path in Flink
>> config.
>> 2020-03-19 18:59:34,317 DEBUG org.apache.flink.runtime.util.HadoopUtils
>> - Cannot find hdfs-site configuration-file path in Flink
>> config.
>> 2020-03-19 18:59:34,317 DEBUG org.apache.flink.runtime.util.HadoopUtils
>> - Adding /home/was/HDFSConf/conf/core-site.xml to hadoop
>> configuration
>> 2020-03-19 18:59:34,317 DEBUG org.apache.flink.runtime.util.HadoopUtils
>> - Adding /home/was/HDFSConf/conf/hdfs-site.xml to hadoop
>> configuration
>> 2020-03-19 18:59:34,344 INFO
>> org.apache.flink.runtime.security.modules.HadoopModule - Hadoop user
>> set to kafka (auth:KERBEROS)
>>
>>
>> This is what my streaming file sink code looks like.
>>
>>
>> val sink: StreamingFileSink[String] = StreamingFileSink
>> .forRowFormat(new Path("hdfs://tmp/auditlog/"), new
>> SimpleStringEncoder[String]("UTF-8"))
>> .withRollingPolicy(DefaultRollingPolicy.create()
>> .withRolloverInterval(TimeUnit.MINUTES.toMillis(15))
>> .withInactivityInterval(TimeUnit.MINUTES.toMillis(5))
>> .withMaxPartSize(1024
>> * 1024 * 1024)
>> .build())
>> .build()
>>
>> result.addSink(sink).name("HDFSSink")
>>
>>
>> When I run the job I get this error stack trace :
>>
>> INFO org.apache.flink.runtime.executiongraph.ExecutionGraph - Sink:
>> HDFSSink (1/1) (27b62d6294da47491041d750daf421a0) switched from RUNNING to
>> FAILED.
>> java.io.IOException: Cannot instantiate file system for URI:
>> hdfs://tmp/auditlog
>> at
>> org.apache.flink.runtime.fs.hdfs.HadoopFsFactory.create(HadoopFsFactory.java:187)
>> at
>> org.apache.flink.core.fs.FileSystem.getUnguardedFileSystem(FileSystem.java:399)
>> at org.apache.flink.core.fs.FileSystem.get(FileSystem.java:318)
>> at
>> org.apache.flink.streaming.api.functions.sink.filesystem.Buckets.<init>(Buckets.java:112)
>> at
>> org.apache.flink.streaming.api.functions.sink.filesystem.StreamingFileSink$RowFormatBuilder.createBuckets(StreamingFileSink.java:242)
>> at
>> org.apache.flink.streaming.api.functions.sink.filesystem.StreamingFileSink.initializeState(StreamingFileSink.java:327)
>> at
>> org.apache.flink.streaming.util.functions.StreamingFunctionUtils.tryRestoreFunction(StreamingFunctionUtils.java:178)
>> at
>> org.apache.flink.streaming.util.functions.StreamingFunctionUtils.restoreFunctionState(StreamingFunctionUtils.java:160)
>> at
>> org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.initializeState(AbstractUdfStreamOperator.java:96)
>> at
>> org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:278)
>> at
>> org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:738)
>> at
>> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:289)
>> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:704)
>> at java.lang.Thread.run(Thread.java:748)
>> Caused by: java.lang.IllegalArgumentException:
>> java.net.UnknownHostException: tmp
>> at
>> org.apache.hadoop.security.SecurityUtil.buildTokenService(SecurityUtil.java:378)
>> at
>> org.apache.hadoop.hdfs.NameNodeProxies.createNonHAProxy(NameNodeProxies.java:320)
>> at
>> org.apache.hadoop.hdfs.NameNodeProxies.createProxy(NameNodeProxies.java:176)
>> at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:687)
>> at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:628)
>> at
>> org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:149)
>>
>>
>> Why is it trying to connect to /tmp ? Is it not supposed to get the
>> namenodes from the core-site.xml and hdfs-site.xml ?
>>
>> Can you please help with the correct way to configure hdfs sink.
>>
>>
>> Best,
>>
>> Nick.
>>
>>
>>
>>
>
> --
> Best, Jingsong Lee
>
