Thomas Tauber-Marshall created IMPALA-9414:
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Summary: Support the Expect: 100-continue http header
Key: IMPALA-9414
URL: https://issues.apache.org/jira/browse/IMPALA-9414
Project: IMPALA
Issue Type: Improvement
Components: Clients
Affects Versions: Impala 3.4.0
Reporter: Thomas Tauber-Marshall
Assignee: Thomas Tauber-Marshall
The "Expect: 100-continue" http header allows http clients to send only the
headers for their request, get a confirmation back from the server that the
headers are valid, and only then send the body of the request, avoiding the
overhead of sending large requests that will ultimately fail.
This would be useful for Impala in situations like submitting a large query to
a Kerberos-secured Impala where requests are proxied through Apache Knox, where
it would allow us to verify the credentials before the query text is send over
the network.
We should implement support for this both in the hs2 http server and in any
clients.
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