hadoop - 在S3上创建Hive外部表将引发 “org.apache.hadoop.fs.s3a.S3AFileSystem not found”异常

Question

我在本地计算机上使用beeline在DDL下运行，并引发异常。

DDL是

CREATE TABLE `report_landing_pages`( 
  `google_account_id` string COMMENT 'from deserializer', 
  `ga_view_id` string COMMENT 'from deserializer', 
  `path` string COMMENT 'from deserializer', 
  `users` string COMMENT 'from deserializer', 
  `page_views` string COMMENT 'from deserializer', 
  `event_value` string COMMENT 'from deserializer', 
  `report_date` string COMMENT 'from deserializer') 
PARTITIONED BY (`dt` date) 
ROW FORMAT SERDE 
  'org.apache.hadoop.hive.serde2.OpenCSVSerde' 
STORED AS TEXTFILE
LOCATION 's3a://bucket_name/table'

异常(exception)是
org.apache.hive.service.cli.HiveSQLException: Error while processing statement: FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. MetaException(message:java.lang.RuntimeException: java.lang.ClassNotFoundException: Class org.apache.hadoop.fs.s3a.S3AFileSystem not found) at org.apache.hive.service.cli.operation.Operation.toSQLException(Operation.java:380) at org.apache.hive.service.cli.operation.SQLOperation.runQuery(SQLOperation.java:257) at org.apache.hive.service.cli.operation.SQLOperation.access$800(SQLOperation.java:91) at org.apache.hive.service.cli.operation.SQLOperation$BackgroundWork$1.run(SQLOperation.java:348) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1698) at org.apache.hive.service.cli.operation.SQLOperation$BackgroundWork.run(SQLOperation.java:362) 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:745) Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: MetaException(message:java.lang.RuntimeException: java.lang.ClassNotFoundException: Class org.apache.hadoop.fs.s3a.S3AFileSystem not found) at org.apache.hadoop.hive.ql.metadata.Hive.createTable(Hive.java:862) at org.apache.hadoop.hive.ql.metadata.Hive.createTable(Hive.java:867) at org.apache.hadoop.hive.ql.exec.DDLTask.createTable(DDLTask.java:4356) at org.apache.hadoop.hive.ql.exec.DDLTask.execute(DDLTask.java:354) at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:199) at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:100) at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:2183) at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1839) at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1526) at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1237) at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1232) at org.apache.hive.service.cli.operation.SQLOperation.runQuery(SQLOperation.java:255) ... 11 more Caused by: MetaException(message:java.lang.RuntimeException: java.lang.ClassNotFoundException: Class org.apache.hadoop.fs.s3a.S3AFileSystem not found) at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$create_table_with_environment_context_result$create_table_with_environment_context_resultStandardScheme.read(ThriftHiveMetastore.java:42070) at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$create_table_with_environment_context_result$create_table_with_environment_context_resultStandardScheme.read(ThriftHiveMetastore.java:42038) at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$create_table_with_environment_context_result.read(ThriftHiveMetastore.java:41964) at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:86) at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.recv_create_table_with_environment_context(ThriftHiveMetastore.java:1199) at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.create_table_with_environment_context(ThriftHiveMetastore.java:1185) at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.create_table_with_environment_context(HiveMetaStoreClient.java:2399) at org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient.create_table_with_environment_context(SessionHiveMetaStoreClient.java:93) at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.createTable(HiveMetaStoreClient.java:752) at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.createTable(HiveMetaStoreClient.java:740) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.invoke(RetryingMetaStoreClient.java:173) at com.sun.proxy.$Proxy34.createTable(Unknown Source) 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:498) at org.apache.hadoop.hive.metastore.HiveMetaStoreClient$SynchronizedHandler.invoke(HiveMetaStoreClient.java:2330) at com.sun.proxy.$Proxy34.createTable(Unknown Source) at org.apache.hadoop.hive.ql.metadata.Hive.createTable(Hive.java:852) ... 22 more
我的本地HDFS与“hdfs dfs -mkdir s3a:// bucket / table”一起正常工作

奇怪的是，如果我不是先在S3上创建表，然后稍后在metastore中手动将表的位置更新为s3，则select语句就像 select COUNT(*) from report_landing_pages group by google_account_id工作正常。

如何修复DDL中的异常？

顺便说一句，我正在Mac OS X EI Caption下使用Hive 2.3.2，Hadoop 2.7.5。

Answer 1

问题解决了。

放置S3 jar之后，除hiveserver2外，还应重新启动metastore服务。