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CREATE EXTERNAL TABLE invoiceitems (
  InvoiceNo INT,
  StockCode INT,
  Description STRING,
  Quantity INT,
  InvoiceDate BIGINT,
  UnitPrice DOUBLE,
  CustomerID INT,
  Country STRING,
  LineNo INT,
  InvoiceTime STRING,
  StoreID INT,
  TransactionID STRING
)
ROW FORMAT SERDE 'org.apache.hive.hcatalog.data.JsonSerDe'
LOCATION 's3a://streamingdata/data/*';

数据文件由 spark 结构化流式作业创建：

...
data/part-00000-006fc42a-c6a1-42a2-af03-ae0c326b40bd-c000.json  7.1 KB  29/08/2018 10:27:32 PM  
data/part-00000-0075634b-8513-47b3-b5f8-19df8269cf9d-c000.json  1.3 KB  30/08/2018 10:47:32 AM  
data/part-00000-00b6b230-8bb3-49d1-a42e-ad768c1f9a94-c000.json  2.3 KB  30/08/2018 1:25:02 AM
...

这是第一个文件的前几行：

{"InvoiceNo":5421462,"StockCode":22426,"Description":"ENAMEL WASH BOWL CREAM","Quantity":8,"InvoiceDate":1535578020000,"UnitPrice":3.75,"CustomerID":13405,"Country":"United Kingdom","LineNo":6,"InvoiceTime":"21:27:00","StoreID":0,"TransactionID":"542146260180829"}
{"InvoiceNo":5501932,"StockCode":22170,"Description":"PICTURE FRAME WOOD TRIPLE PORTRAIT","Quantity":4,"InvoiceDate":1535578020000,"UnitPrice":6.75,"CustomerID":13952,"Country":"United Kingdom","LineNo":26,"InvoiceTime":"21:27:00","StoreID":0,"TransactionID":"5501932260180829"}

但是，如果我运行查询，则不会返回任何数据：

hive> select * from invoiceitems limit 5;
OK
Time taken: 24.127 seconds

hive 的日志文件为空：

$ ls /var/log/hive*
/var/log/hive:

/var/log/hive-hcatalog:

/var/log/hive2:

我该如何进一步调试呢？

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1 回答 1

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我在运行时收到了更多关于错误的提示：

select count(*) from invoiceitems;

这返回了以下错误

...

由于 VERTEX_FAILURE，DAG 没有成功。failedVertices：1killVertices：1 FAILED：执行错误，从 org.apache.hadoop.hive.ql.exec.tez.TezTask 返回代码 2。Vertex failed, vertexName=Map 1, vertexId=vertex_1535521291031_0011_1_00, diagnostics=[Vertex vertex_1535521291031_0011_1_00 [Map 1] killed/failed due to:ROOT_INPUT_INIT_FAILURE, Vertex Input: invoiceitems initializer failed, vertex=vertex_1535521291031_0011_1_00 [Map 1], java.io.IOException:在 pathToPartitionInfo 中找不到 dir = s3a://streamingdata/data/part-00000-006fc42a-c6a1-42a2-af03-ae0c326b40bd-c000.json：[s3a://streamingdata/data/*]

我决定从以下位置更改创建表定义：

LOCATION 's3a://streamingdata/data/*';

到

LOCATION 's3a://streamingdata/data/';

这解决了这个问题。

于 2018-08-30T12:16:39.040 回答