Csaba Ringhofer has posted comments on this change.

Change subject: IMPALA-5736: Add impala-shell argument to set default query 
options
......................................................................


Patch Set 1:

(2 comments)

http://gerrit.cloudera.org:8080/#/c/8038/1//COMMIT_MSG
Commit Message:

PS1, Line 16: .impalarc:
            : [impala]
            : query_options=EXPLAIN_LEVEL=2,MT_DOP=2
> This might be hard to do, but I think
I think that it would be easier to do it like this:
[impala.query_options]
EXPLAIN_LEVEL=2
MT_DOP=2

A similar config group could be created for variables too.

If we decide to do it this way, then we should also change the overwrite 
behavior, because config groups are typically not overwritten as whole, but as 
separate configs.


http://gerrit.cloudera.org:8080/#/c/8038/1/shell/option_parser.py
File shell/option_parser.py:

PS1, Line 160:   parser.add_option("--var", dest="keyval", action="append",
             :                     help="Define variable(s) to be used within 
the Impala session."
             :                          " It must follow the pattern 
\"KEY=VALUE\","
             :                          " KEY starts with an alphabetic 
character and"
             :                          " contains alphanumeric characters or 
underscores.")
             :   parser.add_option("--query_options", dest="query_options",
             :                     help="Sets default query options. The format 
is comma separated"
             :   
> A little bit of bike-shedding:
We have talked about this with Lars, and decided to stick with the comma 
separated strings. 

It is also an option to support both formats.


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Gerrit-MessageType: comment
Gerrit-Change-Id: I26a3b67230c80a99bd246b6af205d558fec9a986
Gerrit-PatchSet: 1
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Lars Volker <[email protected]>
Gerrit-Reviewer: Philip Zeyliger <[email protected]>
Gerrit-HasComments: Yes

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