MongoDB hadoop連接器無法在mongo配置單元表上查詢

Question

我正在使用MongoDB hadoop連接器來使用hadoop中的配置單元表查詢mongoDB。

我能夠執行

select * from mongoDBTestHiveTable;

但是當我嘗試執行以下查詢時

select id from mongoDBTestHiveTable;

它引發以下異常。

蜂巢庫文件夾中存在以下類。

異常stacktrace：

    Diagnostic Messages for this Task:
Error: java.io.IOException: Cannot create an instance of InputSplit class = com.mongodb.hadoop.hive.input.HiveMongoInputFormat$MongoHiveInputSplit:Class com.mongodb.hadoop.hive.input.HiveMongoInputFormat$MongoHiveInputSplit not found
    at org.apache.hadoop.hive.ql.io.HiveInputFormat$HiveInputSplit.readFields(HiveInputFormat.java:147)
    at org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:71)
    at org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:42)
    at org.apache.hadoop.mapred.MapTask.getSplitDetails(MapTask.java:370)
    at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:402)
    at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
    at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:162)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:415)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
    at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:157)
Caused by: java.lang.ClassNotFoundException: Class com.mongodb.hadoop.hive.input.HiveMongoInputFormat$MongoHiveInputSplit not found
    at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:1626)
    at org.apache.hadoop.hive.ql.io.HiveInputFormat$HiveInputSplit.readFields(HiveInputFormat.java:144)
    ... 10 more

Container killed by the ApplicationMaster.

請指教。

Answer 1

您還需要將mongo-hadoop- *和mongo驅動程序jar添加到所有worker的MR1 / MR2類路徑中