[BEAM-2995] can't read/write hdfs in Flink CLUSTER(Standalone)

• Type: Bug
• Status: Open
• Priority: P3
• Resolution: Unresolved
• Affects Version/s: 2.2.0
• Component/s: runner-flink
• Assignee: Unassigned
• Reporter: huangjianhuang
• Created: 27/Sep/17 13:44
• Updated: 03/Jun/22 19:17

Description

i just write a simple demo like:

        Configuration conf = new Configuration();
        conf.set("fs.default.name", "hdfs://localhost:9000");
//other codes
        p.apply("ReadLines", TextIO.read().from("hdfs://localhost:9000/tmp/words"))
                .apply(TextIO.write().to("hdfs://localhost:9000/tmp/hdfsout"));

it works in flink local model with cmd:

mvn exec:java -Dexec.mainClass=com.joe.FlinkWithHDFS     -Pflink-runner     -Dexec.args="--runner=FlinkRunner --filesToStage=target/flinkBeam-2.2.0-SNAPSHOT-shaded.jar"

but not works in CLUSTER mode:

mvn exec:java -Dexec.mainClass=com.joe.FlinkWithHDFS     -Pflink-runner     -Dexec.args="--runner=FlinkRunner --filesToStage=target/flinkBeam-2.2.0-SNAPSHOT-shaded.jar --flinkMaster=localhost:6123 "

it seems the flink cluster regard the hdfs as local file system.
The input log from flink-jobmanger.log is:

2017-09-27 20:17:37,962 INFO  org.apache.flink.runtime.jobmanager.JobManager                - Successfully ran initialization on master in 136 ms.
2017-09-27 20:17:37,968 INFO  org.apache.beam.sdk.io.FileBasedSource                        - {color:red}Filepattern hdfs://localhost:9000/tmp/words2 matched 0 files with total size 0{color}
2017-09-27 20:17:37,968 INFO  org.apache.beam.sdk.io.FileBasedSource                        - Splitting filepattern hdfs://localhost:9000/tmp/words2 into bundles of size 0 took 0 ms and produced 0 files a
nd 0 bundles

The output error message is :

Caused by: java.lang.ClassCastException: {color:red}org.apache.beam.sdk.io.hdfs.HadoopResourceId cannot be cast to org.apache.beam.sdk.io.LocalResourceId{color}
        at org.apache.beam.sdk.io.LocalFileSystem.create(LocalFileSystem.java:77)
        at org.apache.beam.sdk.io.FileSystems.create(FileSystems.java:256)
        at org.apache.beam.sdk.io.FileSystems.create(FileSystems.java:243)
        at org.apache.beam.sdk.io.FileBasedSink$Writer.open(FileBasedSink.java:922)
        at org.apache.beam.sdk.io.FileBasedSink$Writer.openUnwindowed(FileBasedSink.java:884)
        at org.apache.beam.sdk.io.WriteFiles.finalizeForDestinationFillEmptyShards(WriteFiles.java:909)
        at org.apache.beam.sdk.io.WriteFiles.access$900(WriteFiles.java:110)
        at org.apache.beam.sdk.io.WriteFiles$2.processElement(WriteFiles.java:858)

can somebody help me, i've try all the way just can't work it out [cry]
https://issues.apache.org/jira/browse/BEAM-2457