No Under File System Factory found for: hdfs://namenode1:8020/

Alluxio Version: version: alluxio-2.4.1-1

Describe the bug when I execute ./bin/alluxio-start.sh all Mount, there was an error from ./logs/master.log:

2021-01-11 02:45:51,481 WARN  ExtensionFactoryRegistry - No factory implementation supports the path hdfs://namenode1:8020/
2021-01-11 02:45:51,530 ERROR AlluxioMaster - Fatal error: Failed to create master process
java.lang.RuntimeException: java.lang.RuntimeException: Failed to start masters
        at alluxio.master.AlluxioMasterProcess.<init>(AlluxioMasterProcess.java:125)
        at alluxio.master.AlluxioMasterProcess$Factory.create(AlluxioMasterProcess.java:400)
        at alluxio.master.AlluxioMaster.main(AlluxioMaster.java:45)
Caused by: java.lang.RuntimeException: Failed to start masters
        at alluxio.master.MasterUtils.createMasters(MasterUtils.java:57)
        at alluxio.master.AlluxioMasterProcess.<init>(AlluxioMasterProcess.java:123)
        ... 2 more
Caused by: java.util.concurrent.ExecutionException: java.lang.IllegalArgumentException: No Under File System Factory found for: hdfs://namenode1:8020/
        at java.util.concurrent.FutureTask.report(FutureTask.java:122)
        at java.util.concurrent.FutureTask.get(FutureTask.java:192)
        at alluxio.util.CommonUtils.invokeAll(CommonUtils.java:592)
        at alluxio.util.CommonUtils.invokeAll(CommonUtils.java:554)
        at alluxio.master.MasterUtils.createMasters(MasterUtils.java:55)
        ... 3 more
Caused by: java.lang.IllegalArgumentException: No Under File System Factory found for: hdfs://namenode1:8020/
        at alluxio.underfs.UnderFileSystem$Factory.create(UnderFileSystem.java:95)
        at alluxio.underfs.AbstractUfsManager.getOrAdd(AbstractUfsManager.java:128)
        at alluxio.underfs.AbstractUfsManager.lambda$addMount$0(AbstractUfsManager.java:167)
        at alluxio.underfs.UfsManager$UfsClient.acquireUfsResource(UfsManager.java:60)
        at alluxio.master.file.DefaultFileSystemMaster.getRootMountInfo(DefaultFileSystemMaster.java:495)
        at alluxio.master.file.DefaultFileSystemMaster.<init>(DefaultFileSystemMaster.java:437)
        at alluxio.master.file.DefaultFileSystemMaster.<init>(DefaultFileSystemMaster.java:418)
        at alluxio.master.file.FileSystemMasterFactory.create(FileSystemMasterFactory.java:51)
        at alluxio.master.file.FileSystemMasterFactory.create(FileSystemMasterFactory.java:28)
        at alluxio.master.MasterUtils.lambda$createMasters$0(MasterUtils.java:49)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:748)

2021-01-11 02:46:02,082 INFO  NettyUtils - EPOLL_MODE is available
2021-01-11 02:46:03,354 ERROR MasterHealthCheckClient - Exception thrown in the master process check
java.lang.IllegalStateException: Master process is not running on the host namenode1
        at alluxio.master.MasterHealthCheckClient$ProcessCheckRunnable.run(MasterHealthCheckClient.java:213)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:748)

I don’t konw how to solve it, and below is my configuration:

alluxio.master.hostname=namenode1
alluxio.master.journal.type=UFS
alluxio.master.mount.table.root.ufs=hdfs://namenode1:8020/
alluxio.master.mount.table.root.option.alluxio.underfs.version=3.1
alluxio.underfs.hdfs.configuration=/etc/hadoop/3.1.4.0-315/0/core-site.xml:/etc/hadoop/3.1.4.0-315/0/hdfs-site.xml

alluxio.master.embedded.journal.addresses=namenode1:19200,namenode2:19200,namenode3:19200

alluxio.master.security.impersonation.yarn.users=*
alluxio.master.security.impersonation.hive.users=*
alluxio.master.security.impersonation.impala.users=*
alluxio.master.security.impersonation.cydw.users=*

[DLUTLiuFengyi]

我尝试过 alluxio.master.mount.table.root.option.alluxio.underfs.version=3.2 和 alluxio.master.journal.ufs.option.alluxio.underfs.version=3.2 都不行，用 alluxio.underfs.version=3.2 反而成功了…

[isLiuXinxin]

Could not resolve dependencies for project org.alluxio:alluxio-underfs-hdfs:jar:2.4.0: Failed to collect dependencies at org.alluxio:alluxio-shaded-hadoop:jar:3.1.0 Could you send an email with alluxio-underfs-hdfs-3.1.0-2.4.x.jar? [e-mail]