If you really want to share read/write data you can use memcached server or file based database like Tokyocabinet or BDB
-- Thanks & Regards, Chandra Prakash Bhagtani, On Thu, Sep 10, 2009 at 2:22 PM, indoos <[email protected]> wrote: > > Hi, > Here are 2 possible ways for static data sharing- > 1. Using distributed cache- refer > > http://hadoop.apache.org/common/docs/current/mapred_tutorial.html#DistributedCache > 2. Using JobConf object- > > http://hadoop.apache.org/common/docs/current/api/org/apache/hadoop/conf/Configuration.html#set%28java.lang.String,%20java.lang.String%29 > . > > Please note that only read only cache should be used in Hadoop. > > Regards, > Sanjay > > > wbari wrote: > > > > > > > > > > > > > > Hi, > > > > How static data is shared among mappers ? is it synchorinized or not > > possible ? I will appreciate if someone can give possible way of sharing > > data among Map funtions in one job. > > > > > > > > BR, > > > > > > > > Bari > > > > > > -- > View this message in context: > http://www.nabble.com/static-data-sharing-among-map-funtions-tp25347960p25379620.html > Sent from the Hadoop core-user mailing list archive at Nabble.com. > >
