不良的HDFS权限，带有Spark-SQL在纱线群体上

Question

我有一个简单的工作，它正在通过spark sql在HIVE上读取HDFS。我首先以纱线 - 客户模式运行它，但没有任何问题。几次以来，我开始通过纱线群集模式启动它，并且有一个问题：

我有此HDFS权限错误：

Caused by:MetaException(message:org.apache.hadoop.security.AccessControlException: Permission denied: user=yarn, access=EXECUTE, inode="/Projects/SNB/directory/Private/table/table_ORC":hdfs:mygroup:drwxr-xr--
    at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:319)
    at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkTraverse(FSPermissionChecker.java:259)
    at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:205)
    at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:190)
    at org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkPermission(FSDirectory.java:1698)
    at org.apache.hadoop.hdfs.server.namenode.FSDirStatAndListingOp.getFileInfo(FSDirStatAndListingOp.java:108)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getFileInfo(FSNamesystem.java:3857)
    at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getFileInfo(NameNodeRpcServer.java:1006)
    at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getFileInfo(ClientNamenodeProtocolServerSideTranslatorPB.java:843)
    at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
    at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616)
    at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:969)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2049)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2045)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:422)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2043)
)
    at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$get_table_result$get_table_resultStandardScheme.read(ThriftHiveMetastore.java:29329)
    at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$get_table_result$get_table_resultStandardScheme.read(ThriftHiveMetastore.java:29306)
    at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$get_table_result.read(ThriftHiveMetastore.java:29237)
    at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:78)
    at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.recv_get_table(ThriftHiveMetastore.java:1036)
    at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.get_table(ThriftHiveMetastore.java:1022)
    at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.getTable(HiveMetaStoreClient.java:997)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.invoke(RetryingMetaStoreClient.java:89)
    at com.sun.proxy.$Proxy31.getTable(Unknown Source)
    at org.apache.hadoop.hive.ql.metadata.Hive.getTable(Hive.java:976)
    ... 68 more`

但是，当我在此目录上执行HDFS DFS -LS时，它向我显示了：

drwxrwxrwx -lb23598 mygroups 0 2016-12-20 17:58 /Projects/SNB/directory/Private/table/table_ORC

因此

您对此有想法吗？

非常感谢！

Answer 1

尝试创建一个环境变量，如下所示，在提交作业之前

export HADOOP_USER_NAME=<NAME_OF_THE_USER_THAT_HAS_HDFS_PERMISSION>

Answer 2

看来，您的火花驱动程序被提交为yarn用户，而您正在尝试访问的HDFS路径是其他一些用户所有的。

要么将HDFS文件的所有者更改为yarn，要么与HDFS路径的所有者相同的用户提交Spark Job，应该解决您的问题。