Joe McDonnell created IMPALA-11337:
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Summary: impala-shell can output the "Fetched X row(s)" line
before the actual results
Key: IMPALA-11337
URL: https://issues.apache.org/jira/browse/IMPALA-11337
Project: IMPALA
Issue Type: Bug
Components: Clients
Affects Versions: Impala 4.2.0
Reporter: Joe McDonnell
In some scenarios, we are seeing that the "Fetched X row(s)" message is output
before the actual data:
{noformat}
Query: SELECT * FROM test_table ORDER BY id DESC
Query submitted at: 2022-06-02 23:53:48 (Coordinator: https://coordinator:25000)
Query progress can be monitored at:
https://coordinator:25000/query_plan?query_id=9d47858d6659cb87:2ccbdcdf00000000
Fetched 1 row(s) in 1.59s
0 john 10{noformat}
The "Fetched X row(s)" message is going to stderr and the results are going to
stdout, so this is not covered completely by the current tests. Nonetheless, we
should expect the "Fetched X row(s)" output to happen after the results data is
written.
We should add tests for this case and make sure that stdout is flushed prior to
writing the "Fetched X row(s)" output.
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