In short, it needn't "download" files, that metadata is stored and exposed in the API of a StoreFile and regionserver just calls that method!
On Tue, Feb 25, 2014 at 2:16 PM, Bharath Vissapragada <bhara...@cloudera.com > wrote: > Not sure what you are asking but if you want to know the size of a store > file, you can use this method, > > > https://github.com/apache/hbase/blob/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFile.java#L1440 > > One such usage is here, > > > https://github.com/apache/hbase/blob/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/compactions/RatioBasedCompactionPolicy.java#L292 > > It gets the sizes of all the store files, I believe thats what you are > asking! Please correct me if I'm wrong, > > > On Tue, Feb 25, 2014 at 12:37 PM, Upendra Yadav <upendra1...@gmail.com>wrote: > >> Is hbase call delete request for old hfile(storeFile) file if minor/major >> compaction happen for them and generate new hfile and store it in hdfs. >> >> for minor compaction how it will get size of every hfile. lets we have 20 >> no. of hfiles for a CF and minor compaction wants to perform. Will it >> download all hfile and decide compaction have to do or not. Or it have >> in-memory hfile's size information for all hfile. >> > > > > -- > Bharath Vissapragada > <http://www.cloudera.com> > -- Bharath Vissapragada <http://www.cloudera.com>
