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From Xuefu Zhang <xzh...@cloudera.com>
Subject Re: --hiveconf vs -hiveconf
Date Sat, 08 Mar 2014 06:56:23 GMT
This is just getting more and more interesting. I never thought of
-hiveconf option, and always assumed it was a typo of --hiveconf. (That's
why I edited the one, which triggered the discovery.) I just checked and
found that both work, which is out of my surprise.

With this assumption, Beeline has implemented only --hiveconf to mimic CLI.

As to the documentation, I think we can stick to --hiveconf from now on,
since they are supported by both CLI and Beeline. However, -hiveconf will
continue to work for CLI until its death.

Thanks,
Xuefu


On Fri, Mar 7, 2014 at 10:36 PM, Lefty Leverenz <leftyleverenz@gmail.com>wrote:

> > OK, so just one of the pages in wiki has changed, and hive behavior has
> not changed
>
> That's right, and a closer look at the wiki shows that all the examples are
> -hiveconf except the new change.  The only place --hiveconf appears is in
> duplications of help messages for the hive command, the old Hive server, or
> Beeline.
>
> In a fresh export of the wiki --hiveconf occurs in these docs:
>
>    - CLI<
> https://cwiki.apache.org/confluence/display/Hive/LanguageManual+Cli#LanguageManualCli-HiveCommandLineOptions
> >
> repeats
>    what hive -H says (--hiveconf) but gives 3 examples of -hiveconf.
>    - Admin Config<
> https://cwiki.apache.org/confluence/display/Hive/AdminManual+Configuration#AdminManualConfiguration-ConfiguringHive
> >
> says
>    --hiveconf twice, in text and an example (both changed this week).
>    - Hive Server<
> https://cwiki.apache.org/confluence/display/Hive/HiveServer>
> says
>    --hiveconf once, but that's the Thrift server help message.
>    - HiveServer2
> Clients<
> https://cwiki.apache.org/confluence/display/Hive/HiveServer2+Clients#HiveServer2Clients-BeelineCommandOptions
> >says
> --hiveconf twice, but that's the Beeline option.
>
> These wikidocs say -hiveconf:
>
>    - Getting Started (4 in config
> overview<
> https://cwiki.apache.org/confluence/display/Hive/GettingStarted#GettingStarted-ConfigurationManagementOverview
> >
> and
>    2 in error logs<
> https://cwiki.apache.org/confluence/display/Hive/GettingStarted#GettingStarted-ErrorLogs
> >
>    )
>    - Avro SerDe<
> https://cwiki.apache.org/confluence/display/Hive/AvroSerDe#AvroSerDe-SpecifyingtheAvroschemaforatable
> >(2
> in example and text)
>    - Developer Guide<
> https://cwiki.apache.org/confluence/display/Hive/DeveloperGuide#DeveloperGuide-RunningHiveWithoutaHadoopCluster
> >(4
> in "export HIVE_OPTS")
>    - HBase Integration<
> https://cwiki.apache.org/confluence/display/Hive/HBaseIntegration#HBaseIntegration-Usage
> >(2
> in examples)
>    - Variable Substitution<
> https://cwiki.apache.org/confluence/display/Hive/LanguageManual+VariableSubstitution
> >(1
> in the "evil laugh" example)
>    - CLI (2 in one
> example<
> https://cwiki.apache.org/confluence/display/Hive/LanguageManual+Cli#LanguageManualCli-Examples
> >,
>    1 in logging<
> https://cwiki.apache.org/confluence/display/Hive/LanguageManual+Cli#LanguageManualCli-Logging
> >
>    )
>
> (My grep hits were inflated because "-i" caught HiveConf.)
>
> So what's it supposed to be?
>
>
> -- Lefty
>
>
> On Fri, Mar 7, 2014 at 11:06 PM, Thejas Nair <thejas@hortonworks.com>
> wrote:
>
> > OK, so just one of the pages in wiki has changed, and hive behavior
> > has not changed ? (I have been using -hiveconf, but i haven't verified
> > that with the tip of the trunk as of now).
> >
> > On Fri, Mar 7, 2014 at 6:19 PM, Xuefu Zhang <xzhang@cloudera.com> wrote:
> > > I didn't know that -hiveconf is supported. However, from hive -H,
> double
> > > dashes are seen.
> > >
> > >  -h <hostname>                    connecting to Hive Server on remote
> > host
> > >     --hiveconf <property=value>   Use value for given property
> > >     --hivevar <key=value>         Variable subsitution to apply to hive
> > >
> > > Thanks,
> > > Xuefu
> > >
> > >
> > > On Fri, Mar 7, 2014 at 6:00 PM, Edward Capriolo <edlinuxguru@gmail.com
> > >wrote:
> > >
> > >> I was not around when this change was made but I think we should have
> > kept
> > >> the old - dash version. We should consider adding it back.
> > >>
> > >>
> > >> On Fri, Mar 7, 2014 at 8:56 PM, Lefty Leverenz <
> leftyleverenz@gmail.com
> > >> >wrote:
> > >>
> > >> > Xuefu just fixed the AdminManual Configuration
> > >> > wiki<
> > >> >
> > >>
> >
> https://cwiki.apache.org/confluence/display/Hive/AdminManual+Configuration
> > >> > >,
> > >> > changing bin/hive -hiveconf ... to --hiveconf, so I grepped the wiki
> > >> > archive and found many more cases of single-dash hiveconf than
> > >> double-dash:
> > >> >
> > >> > > grep -i '\-\-hiveconf' * | wc
> > >> >        2      16     178
> > >> > > grep -i '\-hiveconf' * | wc
> > >> >       24     282    4054
> > >> >
> > >> > A bit of googling also showed both versions of the option.  So two
> > >> > questions:
> > >> >
> > >> >
> > >> >    1. Should I change all cases of single-dash hiveconf to
> > double-dash in
> > >> >    the wiki?
> > >> >    2. Should a single-dash option be created to accommodate all the
> > wrong
> > >> >    information on the Internet and in books (including *Hadoop:  The
> > >> >    Definitive Guide* and chapters 9 & 12 of *Programming Hive*)?
> > >> >
> > >> >
> > >> > -- Lefty
> > >> >
> > >>
> >
> > --
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