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ASF GitHub Bot commented on HDFS-16832: --------------------------------------- xkrogen merged PR #5099: URL: https://github.com/apache/hadoop/pull/5099 > [SBN READ] Fix NPE when check the block location of empty directory > ------------------------------------------------------------------- > > Key: HDFS-16832 > URL: https://issues.apache.org/jira/browse/HDFS-16832 > Project: Hadoop HDFS > Issue Type: Bug > Reporter: zhengchenyu > Assignee: zhengchenyu > Priority: Major > Labels: pull-request-available > > HDFS-16732 is introduced for check block location when getListing or > getFileInfo. But When we check block location of empty directory will throw > NPE. > Exception stack on tez client are below: > {code:java} > org.apache.hadoop.ipc.RemoteException(java.lang.NullPointerException): > java.lang.NullPointerException > at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1554) > at org.apache.hadoop.ipc.Client.call(Client.java:1492) > at org.apache.hadoop.ipc.Client.call(Client.java:1389) > at > org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:233) > at > org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:118) > at com.sun.proxy.$Proxy12.getListing(Unknown Source) > at > org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getListing(ClientNamenodeProtocolTranslatorPB.java:678) > at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) > at > org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:422) > at > org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeMethod(RetryInvocationHandler.java:165) > at > org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:157) > at > org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95) > at > org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:359) > at com.sun.proxy.$Proxy13.getListing(Unknown Source) > at org.apache.hadoop.hdfs.DFSClient.listPaths(DFSClient.java:1671) > at > org.apache.hadoop.hdfs.DistributedFileSystem$DirListingIterator.(DistributedFileSystem.java:1212) > at > org.apache.hadoop.hdfs.DistributedFileSystem$DirListingIterator.(DistributedFileSystem.java:1195) > at > org.apache.hadoop.hdfs.DistributedFileSystem$25.doCall(DistributedFileSystem.java:1140) > at > org.apache.hadoop.hdfs.DistributedFileSystem$25.doCall(DistributedFileSystem.java:1136) > at > org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81) > at > org.apache.hadoop.hdfs.DistributedFileSystem.listLocatedStatus(DistributedFileSystem.java:1154) > at > org.apache.hadoop.fs.FileSystem.listLocatedStatus(FileSystem.java:2054) > at > org.apache.hadoop.mapred.FileInputFormat.singleThreadedListStatus(FileInputFormat.java:278) > at > org.apache.hadoop.mapred.FileInputFormat.listStatus(FileInputFormat.java:239) > at > org.apache.hadoop.mapred.FileInputFormat.getSplits(FileInputFormat.java:325) > at > org.apache.hadoop.hive.ql.io.HiveInputFormat.addSplitsForGroup(HiveInputFormat.java:306) > at > org.apache.hadoop.hive.ql.io.HiveInputFormat.getSplits(HiveInputFormat.java:408) > at > org.apache.hadoop.hive.ql.exec.tez.HiveSplitGenerator.initialize(HiveSplitGenerator.java:159) > at > org.apache.tez.dag.app.dag.RootInputInitializerManager$InputInitializerCallable$1.run(RootInputInitializerManager.java:279) > at > org.apache.tez.dag.app.dag.RootInputInitializerManager$InputInitializerCallable$1.run(RootInputInitializerManager.java:270) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:422) > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730) > at > org.apache.tez.dag.app.dag.RootInputInitializerManager$InputInitializerCallable.call(RootInputInitializerManager.java:270) > at > org.apache.tez.dag.app.dag.RootInputInitializerManager$InputInitializerCallable.call(RootInputInitializerManager.java:254) > at > com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:125) > at > com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:57) > at > com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:78) > 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) {code} -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org