Thanks for the reference. Naama On Thu, Sep 4, 2008 at 9:01 PM, olston <[EMAIL PROTECTED]> wrote:
> > Hi, > > Our SIGMOD paper about Pig > (http://www.cs.cmu.edu/~olston/publications/sigmod08.pdf<http://www.cs.cmu.edu/%7Eolston/publications/sigmod08.pdf>) > compares Pig with > SQL, and to a first approximation Hive is like SQL. > > Briefly: Pig lets users specify the order of operations directly ("plugging > together pipes" as bloggers who are fans of map-reduce are fond of saying), > as in map-reduce (but in Pig the pipes can be composed arbitrarily, and > inward/outward branching is explicitly modeled). In contrast, SQL decouples > the program specification from the order of operations, which gets > determined by an automatic "query optimizer." For a more detailed > discussion > please see our paper referenced above. > > -Chris > > > Naama Kraus wrote: > > > > Hi, > > > > There are various technologies on top of Hadoop such as HBase, Hive, Pig > > and > > more. I was wondering what are the differences between them. What are the > > usage scenarios that fit each one of them. > > > > For instance, is it true to say that Pig and Hive belong to the same > > family > > ? Or is Hive more close to HBase ? > > My understanding is that HBase allows direct lookup and low latency > > queries, > > while Pig and Hive provide batch processing operations which are M/R > > based. > > Both define a data model and an SQL-like query language. Is this true ? > > > > Could anyone shed light on when to use each technology ? Main differences > > ? > > Pros and Cons ? > > Information on other technologies such as Jaql is also welcome. > > > > Thanks, Naama > > > > -- > > oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 > oo > > 00 oo 00 oo > > "If you want your children to be intelligent, read them fairy tales. If > > you > > want them to be more intelligent, read them more fairy tales." (Albert > > Einstein) > > > > > > -- > View this message in context: > http://www.nabble.com/HBase%2C-Hive%2C-Pig-and-other-Hadoop-based-technologies-tp19287896p19316495.html > Sent from the Hadoop core-user mailing list archive at Nabble.com. > > -- oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo 00 oo "If you want your children to be intelligent, read them fairy tales. If you want them to be more intelligent, read them more fairy tales." (Albert Einstein)
