[GitHub] [incubator-iceberg] chenjunjiedada opened a new issue #290: Add parameter checks for HadoopTables#create

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chenjunjiedada opened a new issue #290: Add parameter checks for HadoopTables#create
URL: https://github.com/apache/incubator-iceberg/issues/290
 
 
   The `HadoopTables#create` doesn't check whether the spec is null which may lead to NullPointerExeception.  For example, a user may use `specForTables` to get partition spec for a table and then pass it to `HadoopTables#create`, it throws NullPointerExeception if the table doesn't have partition column.
   
   IIUC we should support creating the table which has no partition. So what is the default behavior? Shall we use a PartitionSpec with an empty PartitionField list? 
   `PartitionSpec.buildfor(shema).build()`

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