[jira] [Resolved] (IMPALA-11785) impala-shell should produce a warning if Thrift's fastbinary package isn't working

["Joe McDonnell (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-11785?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joe McDonnell resolved IMPALA-11785.
------------------------------------
    Fix Version/s: Impala 4.3.0
       Resolution: Fixed

> impala-shell should produce a warning if Thrift's fastbinary package isn't working
> ----------------------------------------------------------------------------------
>
>                 Key: IMPALA-11785
>                 URL: https://issues.apache.org/jira/browse/IMPALA-11785
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Clients
>    Affects Versions: Impala 4.3.0
>            Reporter: Joe McDonnell
>            Assignee: Joe McDonnell
>            Priority: Major
>             Fix For: Impala 4.3.0
>
>
> Thrift's fastbinary package accelerates the binary protocol for Thrift with native code, and it can make a large difference in performance for impala-shell (and other clients). Differences in compilers or other build-time discrepancies can cause it to fail to load. When that happens, it falls back to the non-accelerated Python code.
> Currently, there is no warning when it falls back to the non-accelerated code. We should change impala-shell to issue a warning in this case. One way to do that is to try to import thrift.protocol.fastbinary and issue a warning if it fails to import.
> {noformat}
> try:
>   import thrift.protocol.fastbinary
>   print("Successfully imported fastbinary")
> except:
>   print("Could not import fastbinary"){noformat}



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