Restriction

Last Updated: Jun 10, 2016

At present, the application limitations of ODPS incude:

  • The length of string column in ODPS table can not exceed 2MB.
  • The quantity of resources referenced by single task can not exceed 512 and the partition table is calculated as one unit.
  • The total size of resources referenced by single task can not exceed 64MB.
  • The inputs and outputs of single task can not exceed 128 respectively.
  • The quantity of Counter defined in single task can not exceed 64.
  • The size of memory occupied by single Map or Reduce worker defaults to 2048 and the rangle is [256MB, 12GB].
  • The times of single Map or Reduce Worker reading a resource limit to <=64.
  • In local running mode, the number of Map Worker and Reduce worker can not exceed 100. The default downloaded record number of one input is 100.
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