Return-Path: X-Original-To: apmail-hive-user-archive@www.apache.org Delivered-To: apmail-hive-user-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 66B371190C for ; Sun, 13 Jul 2014 07:58:17 +0000 (UTC) Received: (qmail 97487 invoked by uid 500); 13 Jul 2014 07:58:15 -0000 Delivered-To: apmail-hive-user-archive@hive.apache.org Received: (qmail 97407 invoked by uid 500); 13 Jul 2014 07:58:15 -0000 Mailing-List: contact user-help@hive.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@hive.apache.org Delivered-To: mailing list user@hive.apache.org Received: (qmail 97395 invoked by uid 99); 13 Jul 2014 07:58:15 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 13 Jul 2014 07:58:15 +0000 X-ASF-Spam-Status: No, hits=2.2 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_NEUTRAL X-Spam-Check-By: apache.org Received-SPF: neutral (athena.apache.org: local policy) Received: from [209.85.214.176] (HELO mail-ob0-f176.google.com) (209.85.214.176) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 13 Jul 2014 07:58:10 +0000 Received: by mail-ob0-f176.google.com with SMTP id wo20so2946820obc.21 for ; Sun, 13 Jul 2014 00:57:48 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:content-type; bh=Ia8eWO/xArqvOLq0DjLmQNh/2ZGjA2r40IxnI0oIAI0=; b=FS952+xCrFzTDLKl36dujV8hM9bgjgdpmCbTKs8N5RRkNbrY0o8hvnOOvvT48dl3Ah 3gRFLxXvNuAJVq3bF2nVntJe1QUJ8fA3yEeUWYzwZIGVji043iRXpvlUfMQEylt6qSzW xb3jzhwKlAmSfa9OReTT4K9xGncnASiPi3bhXRF36LVvjQVSe5AupOU74sVvMoEIPWAN 0XtQEEeX932b4A/fz69h6E4IJFJS8OrKHVaf4dLDWDeRyvmn2a24cTYoMa+NsZt7enmW 83/cRAFw3bCgDK2LBwX6hNy40c8I//Ks00XCNr9itqT2v6DfHHFVfpkkbNr44TS4O2kX uw6g== X-Gm-Message-State: ALoCoQkmyeAG2cFBFyiDaoORD7nMmYBJNenB6otivGuVJ81DO2mP3FrigxazBmN6HR6leayS5AN9 MIME-Version: 1.0 X-Received: by 10.60.161.167 with SMTP id xt7mr10326054oeb.42.1405238268158; Sun, 13 Jul 2014 00:57:48 -0700 (PDT) Received: by 10.76.172.73 with HTTP; Sun, 13 Jul 2014 00:57:48 -0700 (PDT) In-Reply-To: References: Date: Sun, 13 Jul 2014 16:57:48 +0900 Message-ID: Subject: Re: Hive can I contribute to Hive confluence wiki documents? From: =?UTF-8?B?TmF2aXPrpZjsirnsmrA=?= To: "user@hive.apache.org" Content-Type: multipart/alternative; boundary=089e0117618dcc791704fe0e8712 X-Virus-Checked: Checked by ClamAV on apache.org --089e0117618dcc791704fe0e8712 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable For "cache.expr.evaluation" problem, it's fixed in https://issues.apache.org/jira/browse/HIVE-7314 (will be included in next release) But I agree that it can be a critical problem for users of 0.12.0 and 0.13.x version and need proper warning on that. Thanks, Navis 2014-07-13 16:48 GMT+09:00 =E9=83=AD=E5=A3=AB=E4=BC=9F : > And I haven't add other information in the wikidoc yet. > > > 2014-07-04 14:37 GMT+08:00 Lefty Leverenz : > >> The 'hive.cache.expr.evaluation' parameter is documented in the wikidoc = Configuration >> Properties >> . >> Have you added other information in a different wikidoc? If so, I'll l= ink >> the docs to each other. >> >> -- Lefty >> >> >> On Thu, May 29, 2014 at 5:31 AM, Lefty Leverenz >> wrote: >> >>> Thank you for pointing this out. The 'hive.cache.expr.evaluation' >>> parameter was added by HIVE-4209 >>> and it needs to be >>> included in the wiki. Its description is in hive-default.xml.template: >>> >>> If true, evaluation result of deterministic expression referenced twice >>>> or more will be cached. For example, in filter condition like ".. wher= e key >>>> + 10 > 10 or key + 10 =3D 0" "key + 10" will be evaluated/cached once = and >>>> reused for following expression ("key + 10 =3D 0"). Currently, this is >>>> applied only to expressions in select or filter operator. >>> >>> >>> Do you want to provide more information than that? To contribute to th= e >>> wiki, create a Confluence account >>> and send a message >>> to this list asking for wiki editing privilege and giving your account >>> name. But if you just want the description to be added to the wiki, I = can >>> take care of that. >>> >>> If you have additional information, it might not belong in Configuratio= n >>> Properties >>> (although >>> once the parameter is there it can link to another page for details). = The >>> Select >>> >>> page is one possibility, or maybe you'll find a better place for it. >>> >>> If you want to revise the description in hive-default.xml.template, you >>> need to open a JIRA and patch the file. >>> >>> >>> -- Lefty >>> >>> >>> On Sat, May 24, 2014 at 1:01 AM, =E9=83=AD=E5=A3=AB=E4=BC=9F wrote: >>> >>>> I have used a configuration property 'hive.cache.expr.evaluation' in >>>> hive 0.12 recently and found it useful. But I cannot find any document= s >>>> about it on the wiki page: >>>> https://cwiki.apache.org/confluence/display/Hive/Configuration+Propert= ies. >>>> Indeed, I pick it up from the source code. >>>> >>>> I think it maybe useful for other hive users if I can write some >>>> documents about the property. >>>> >>>> So, can anyone give me some pointers that how can I make the change >>>> happen ? >>>> >>>> Thanks, anyway. >>>> >>> >>> >> > --089e0117618dcc791704fe0e8712 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
For "cache.expr.evaluation" problem, it's fixed in=C2=A0https://issues.apache.= org/jira/browse/HIVE-7314 (will be included in next release)

=
But I agree that it can be a critical problem for users of 0.12.0 an= d 0.13.x version and need proper warning on that.

Thanks,=C2=A0
Navis


2014-07= -13 16:48 GMT+09:00 =E9=83=AD=E5=A3=AB=E4=BC=9F <guoshiwei@gmail.com= >:
And I haven't add other information in the wikidoc yet= .
<= br>
2014-07-04 14:37 GMT+08:00 Lefty Leverenz= <leftyleverenz@gmail.com>:
The 'hive.cache.expr.ev= aluation' parameter is documented in the wikidoc Configuration Pro= perties. =C2=A0Have you added other information in a different wikidoc?= =C2=A0If so, I'll link the docs to each other.

-- Lefty
=


On Thu, May 29, 2014 at 5:31 AM, Lefty L= everenz <leftyleverenz@gmail.com> wrote:
Thank you for pointing this out. =C2=A0The 'hive.cache= .expr.evaluation' parameter was added by HIVE-4209=C2=A0and it n= eeds to be included in the wiki. =C2=A0Its description is in hive-default.x= ml.template:

If true, evaluation result of deterministic expression referenced twice or = more will be cached.=C2=A0For example, in filter condition like ".. wh= ere key + 10 > 10 or key + 10 =3D 0"=C2=A0"key + 10" will= be evaluated/cached once and reused for following expression ("key + = 10 =3D 0").=C2=A0Currently, this is applied only to expressions in sel= ect or filter operator.

Do you want to provide more information than that? =C2= =A0To contribute to the wiki, create a Confluence account and send= a message to this list asking for wiki editing privilege and giving your a= ccount name. =C2=A0But if you just want the description to be added to the = wiki, I can take care of that.

If you have additional information, it might not = belong in=C2=A0Configuration Properties=C2= =A0(although once the parameter is there it can link to another page for de= tails). =C2=A0The Select page is one possibil= ity, or maybe you'll find a better place for it.

If you want to revise the description in hive-default.x= ml.template, you need to open a JIRA and patch the file.


-- Le= fty


On Sat, May 24, 2014 at 1:01 AM, =E9=83= =AD=E5=A3=AB=E4=BC=9F <guoshiwei@gmail.com> wrote:
I have used a configuration property 'hive.cache.expr.= evaluation' in hive 0.12 recently and found it useful. But I cannot fin= d any documents about it on the wiki page: htt= ps://cwiki.apache.org/confluence/display/Hive/Configuration+Properties.= Indeed, I pick it up from the source code.=C2=A0

I think it maybe useful for other hive users if I can write = some documents about the property.

So, can anyone = give me some pointers that how can I make the change happen ?

Thanks, anyway.




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