如何調整（非EMR）Hive到S3的數據上傳？

Question

我想將數據從裸機hadoop集群上的配置單元表復制到Amazon S3存儲桶。

我知道我可以做這樣的事情：

hive> create external table my_table
> (
> `column1` string,
> `column2` string,
  ....
> `columnX` string)
> row format delimited fields terminated by ','
> lines terminated by '\n'
> stored as textfile
> location 's3n://my_bucket/my_folder_path/';

hive> insert into table my_table select * from source_db.source_table;

它適用於少量數據。 但是，如果我嘗試使用更大的數據集，則會出現堆棧跟蹤錯誤，如下所示。

我正在尋找有關調整此過程或其他選項的方法的幫助。

提前致謝。

Diagnostic Messages for this Task:
Error: java.lang.RuntimeException: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while processing row
        at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:172)
        at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:54)
        at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:453)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343)
        at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1709)
        at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:162)
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while processing row
        at org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator.process(VectorMapOperator.java:52)
        at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:163)
        ... 8 more
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.IllegalArgumentException: n must be positive
        at org.apache.hadoop.hive.ql.exec.FileSinkOperator.createBucketFiles(FileSinkOperator.java:577)
        at org.apache.hadoop.hive.ql.exec.FileSinkOperator.process(FileSinkOperator.java:675)
        at org.apache.hadoop.hive.ql.exec.vector.VectorFileSinkOperator.process(VectorFileSinkOperator.java:102)
        at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:838)
        at org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator.process(VectorSelectOperator.java:138)
        at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:838)
        at org.apache.hadoop.hive.ql.exec.TableScanOperator.process(TableScanOperator.java:117)
        at org.apache.hadoop.hive.ql.exec.MapOperator$MapOpCtx.forward(MapOperator.java:167)
        at org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator.process(VectorMapOperator.java:45)
        ... 9 more

Answer 1

蜂巢清楚地告訴您問題所在。 看這兩行：

• 處理行時出現Hive運行時錯誤
• IllegalArgumentException：n必須為正。因此，這不是小數據集還是大數據集的問題。 相反，大型數據集包含一些行，而Hive無法處理這些行。

但是，很難用您發布的信息來查明確切的問題。 我建議您將大型​​數據集分解為較小的塊，並嘗試縮小問題范圍。