Csaba Ringhofer created IMPALA-10682:
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Summary: impala-shell is slow with hs2-http
Key: IMPALA-10682
URL: https://issues.apache.org/jira/browse/IMPALA-10682
Project: IMPALA
Issue Type: Improvement
Components: Clients
Reporter: Csaba Ringhofer
The following command takes 1.5 sec with hs2 and 8.5 sec with hs2-http ptotocol
on my dev machine:
{code}
shell/impala_shell.py -B -q "select * from tpch_parquet.lineitem limit 100000;"
--protocol hs2 > /dev/null
{code}
Profiling has shown that the main culprit is calling socket.recv() 2809090
times. The root cause is the lack of buffering in our current http client
implementation.
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