frankiechang123 opened a new pull request #2430:
URL: https://github.com/apache/thrift/pull/2430


   Use poll instead of select if possible
   
   <!-- Explain the changes in the pull request below: -->
   Currently, Python TNonblockingServer uses `select.select` to monitor the IO 
of all existing connections. The value of file descriptors monitored by 
`select()` is limited to be lower than FD_SETSIZE (1024). Any file descriptor 
higher than 1024 will trigger the `fd out of range` error in `select.select`
   
   Switching to `select.poll` can solve this problem. However, as noted in the 
official documentation, `select.poll` is not supported in all operating 
systems. We should also check whether the current system has `poll` in the 
select module, and use poll if it's available. 
   
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