And I haven't add other information in the wikidoc yet.
2014-07-04 14:37 GMT+08:00 Lefty Leverenz <leftylever...@gmail.com>: > The 'hive.cache.expr.evaluation' parameter is documented in the wikidoc > Configuration > Properties > <https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.cache.expr.evaluation>. > Have you added other information in a different wikidoc? If so, I'll link > the docs to each other. > > -- Lefty > > > On Thu, May 29, 2014 at 5:31 AM, Lefty Leverenz <leftylever...@gmail.com> > wrote: > >> Thank you for pointing this out. The 'hive.cache.expr.evaluation' >> parameter was added by HIVE-4209 >> <https://issues.apache.org/jira/browse/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 ".. where key >>> + 10 > 10 or key + 10 = 0" "key + 10" will be evaluated/cached once and >>> reused for following expression ("key + 10 = 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 the >> wiki, create a Confluence account >> <https://cwiki.apache.org/confluence/signup.action> 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 Configuration >> Properties >> <https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties> >> (although >> once the parameter is there it can link to another page for details). The >> Select >> <https://cwiki.apache.org/confluence/display/Hive/LanguageManual+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, 郭士伟 <guoshi...@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 find any documents >>> about it on the wiki page: >>> https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties. >>> 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. >>> >> >> >
