c17dd9d490
### _Why are the changes needed?_ If core-site.xml contains a FileSystem uri, whose FileSystem implementation class is not present, following error will appear repeatedly in Kyuubi log after any user connects to Kyuubi and executed any SQL: ``` 22/01/12 19:45:08 WARN credentials.HadoopFsDelegationTokenProvider: Failed to get Hadoop FileSystem instance by URI: alluxio://localhost java.lang.RuntimeException: java.lang.ClassNotFoundException: Class alluxio.hadoop.FileSystem not found at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2667) at org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:3431) at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:3466) at org.apache.hadoop.fs.FileSystem.access$300(FileSystem.java:174) at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:3574) at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:3521) at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:540) at org.apache.hadoop.fs.Path.getFileSystem(Path.java:365) at org.apache.kyuubi.credentials.HadoopFsDelegationTokenProvider$.$anonfun$hadoopFSsToAccess$2(HadoopFsDelegationTokenProvider.scala:100) at scala.util.Try$.apply(Try.scala:213) at org.apache.kyuubi.credentials.HadoopFsDelegationTokenProvider$.$anonfun$hadoopFSsToAccess$1(HadoopFsDelegationTokenProvider.scala:100) at scala.collection.TraversableLike.$anonfun$flatMap$1(TraversableLike.scala:293) at scala.collection.mutable.ResizableArray.foreach(ResizableArray.scala:62) at scala.collection.mutable.ResizableArray.foreach$(ResizableArray.scala:55) at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:49) at scala.collection.TraversableLike.flatMap(TraversableLike.scala:293) at scala.collection.TraversableLike.flatMap$(TraversableLike.scala:290) at scala.collection.AbstractTraversable.flatMap(Traversable.scala:108) at org.apache.kyuubi.credentials.HadoopFsDelegationTokenProvider$.hadoopFSsToAccess(HadoopFsDelegationTokenProvider.scala:99) at org.apache.kyuubi.credentials.HadoopFsDelegationTokenProvider.$anonfun$obtainDelegationTokens$1(HadoopFsDelegationTokenProvider.scala:62) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) at org.apache.kyuubi.credentials.HadoopFsDelegationTokenProvider$$anon$1.run(HadoopFsDelegationTokenProvider.scala:125) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1878) at org.apache.kyuubi.credentials.HadoopFsDelegationTokenProvider$.doAsProxyUser(HadoopFsDelegationTokenProvider.scala:124) at org.apache.kyuubi.credentials.HadoopFsDelegationTokenProvider.obtainDelegationTokens(HadoopFsDelegationTokenProvider.scala:60) at org.apache.kyuubi.credentials.HadoopCredentialsManager$$anon$1.$anonfun$run$1(HadoopCredentialsManager.scala:210) at org.apache.kyuubi.credentials.HadoopCredentialsManager$$anon$1.$anonfun$run$1$adapted(HadoopCredentialsManager.scala:210) at scala.collection.Iterator.foreach(Iterator.scala:943) at scala.collection.Iterator.foreach$(Iterator.scala:943) at scala.collection.AbstractIterator.foreach(Iterator.scala:1431) at scala.collection.MapLike$DefaultValuesIterable.foreach(MapLike.scala:214) at org.apache.kyuubi.credentials.HadoopCredentialsManager$$anon$1.run(HadoopCredentialsManager.scala:210) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.ClassNotFoundException: Class alluxio.hadoop.FileSystem not found at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2571) at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2665) ... 40 more ``` ### _How was this patch tested?_ - [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible - [ ] Add screenshots for manual tests if appropriate - [x] [Run test](https://kyuubi.readthedocs.io/en/latest/develop_tools/testing.html#running-tests) locally before make a pull request Closes #1739 from zhouyifan279/1731. Closes #1731 387036d8 [zhouyifan279] [KYUUBI #1731][FEATURE] Kyuubi server should not fail to start when Hadoop FileSystem class not found 6d80b8e9 [zhouyifan279] [KYUUBI #1731][FEATURE] Kyuubi server should not fail to start when Hadoop FileSystem class not found Authored-by: zhouyifan279 <zhouyifan279@gmail.com> Signed-off-by: ulysses-you <ulyssesyou@apache.org> |
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