Hi Anjali, The Cached is immutable you can’t update data into. They way to update cache is re-create cache.
> On Jun 16, 2016, at 4:24 PM, Anjali Chadha <anjali.chadha...@gmail.com> wrote: > > Hi all, > > I am having a hard time understanding the caching concepts in Spark. > > I have a hive table("person"), which is cached in Spark. > > sqlContext.sql("create table person (name string, age int)") //Create a new > table > //Add some values to the table > ... > ... > //Cache the table in Spark > sqlContext.cacheTable("person") > sqlContext.isCached("person") //Returns true > sqlContext.sql("insert into table person values ("Foo", 25)") // Insert some > other value in the table > > //Check caching status again > sqlContext.isCached("person") //Returns true > sqlContext is HiveContext. > > Will the entries inserted after cacheTable("person") statement be cached? In > other words, ("Foo", 25) entry is cached in Spark or not? > > If not, how can I cache only the entries inserted later? I don't want to > first uncache and then again cache the whole table. > > Any relevant web link or information will be appreciated. > > - Anjali Chadha >