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From Nick Bendtner <buggi...@gmail.com>
Subject Re: Help with flink hdfs sink
Date Wed, 25 Mar 2020 22:54:43 GMT
Thank you so much guys, I used "hdfs://nameservice/path/of/your/file",
works fine for me now.

Best,
Nick

On Fri, Mar 20, 2020 at 3:48 AM Yang Wang <danrtsey.wy@gmail.com> wrote:

> 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 <jingsonglee0@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 <buggie89@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
>>
>

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